KTM 125 OR KTM 150

Trae_Arnold
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Trae_Arnold
Edited Date/Time 2/19/2020 10:51am
After watching straight rhythm, I found a good deal on brand new KTM’s so I’m in the market for a 2 stroke. I’m coming off a 2018 CRF 250R, a bike that revs a ton like a 125. I’m a beginner rider and I’m not sure if I would like less power with more fun or almost the same amount of power and feel comfortable clearing jumps. Anyone ride both models of KTM’s that can give me some input?
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Bruce372
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Bruce372 10/7/2019 9:20pm
10/7/2019 9:20pm
I've got both, well at least a white 125 and a orange 150.

I've not ridden the 125 much, apart to jet it when we first bought it. Gonna get some time on it soon though.

I think the 125 is slightly cheaper? If you wanna upgrade to the 150 $850 for the whole shebang is very good value.

The 150 really is an amazing bike.
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CarlinoJoeVideo
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CarlinoJoeVideo 10/7/2019 9:20pm
10/7/2019 9:20pm
They are both pretty close. I’d go with whatever you can get a good deal on.

150 has a tad more bottom end and more overall power.

125 revs faster and stays in power and easier.

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Bruce372
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Bruce372 10/7/2019 9:23pm
10/7/2019 9:23pm
Yeah, Joe is right.... after jetting the 125 and good fuel, it's the crispest bike I've ever ridden.

If you are light, the 125 is good. Bigger dude, 150.

Either way, you csnt go wrong
scott_nz 10/7/2019 9:32pm
10/7/2019 9:32pm
I had a 18 125 and now have a 19 150 , I trail ride and moto and find the 150 a little easier to ride esp on the trails A bit more mid range , but the 125 revved a bit further , , if you are racing get the 125 , but I like the 150 better , on the moto tracks there is not much difference (I’m 41, 6 foot and about 190 pounds , had to put a rear spring in it but otherwise std on the 19 150 , will put a muffler on it eventually
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Trae_Arnold
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Trae_Arnold 10/7/2019 10:30pm
10/7/2019 10:30pm
Bruce372 wrote:
I've got both, well at least a white 125 and a orange 150. I've not ridden the 125 much, apart to jet it when we first...
I've got both, well at least a white 125 and a orange 150.

I've not ridden the 125 much, apart to jet it when we first bought it. Gonna get some time on it soon though.

I think the 125 is slightly cheaper? If you wanna upgrade to the 150 $850 for the whole shebang is very good value.

The 150 really is an amazing bike.
Thanks for your input. The KTM 150 is actually cheaper at my local shop by $200. I just want to have fun on moto tracks and I think the 150 might be the better option from everybody’s opinion.
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Trae_Arnold
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Trae_Arnold 10/7/2019 10:35pm
10/7/2019 10:35pm
scott_nz wrote:
I had a 18 125 and now have a 19 150 , I trail ride and moto and find the 150 a little easier to ride...
I had a 18 125 and now have a 19 150 , I trail ride and moto and find the 150 a little easier to ride esp on the trails A bit more mid range , but the 125 revved a bit further , , if you are racing get the 125 , but I like the 150 better , on the moto tracks there is not much difference (I’m 41, 6 foot and about 190 pounds , had to put a rear spring in it but otherwise std on the 19 150 , will put a muffler on it eventually
Do you see a huge difference in power at a moto track? Do you think I need that extra low end power on a sandy mx track?
Trae_Arnold
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Trae_Arnold 10/7/2019 10:36pm
10/7/2019 10:36pm
CarlinoJoeVideo wrote:
They are both pretty close. I’d go with whatever you can get a good deal on. 150 has a tad more bottom end and more overall...
They are both pretty close. I’d go with whatever you can get a good deal on.

150 has a tad more bottom end and more overall power.

125 revs faster and stays in power and easier.

Which one is easier to ride at a beginner level?
CarlinoJoeVideo
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CarlinoJoeVideo 10/7/2019 10:38pm
10/7/2019 10:38pm
CarlinoJoeVideo wrote:
They are both pretty close. I’d go with whatever you can get a good deal on. 150 has a tad more bottom end and more overall...
They are both pretty close. I’d go with whatever you can get a good deal on.

150 has a tad more bottom end and more overall power.

125 revs faster and stays in power and easier.

Trae_Arnold wrote:
Which one is easier to ride at a beginner level?
Maybe 150 might be easier because there’s a bit more power than just up top on the 125?
scott_nz 10/7/2019 10:45pm
10/7/2019 10:45pm
scott_nz wrote:
I had a 18 125 and now have a 19 150 , I trail ride and moto and find the 150 a little easier to ride...
I had a 18 125 and now have a 19 150 , I trail ride and moto and find the 150 a little easier to ride esp on the trails A bit more mid range , but the 125 revved a bit further , , if you are racing get the 125 , but I like the 150 better , on the moto tracks there is not much difference (I’m 41, 6 foot and about 190 pounds , had to put a rear spring in it but otherwise std on the 19 150 , will put a muffler on it eventually
Trae_Arnold wrote:
Do you see a huge difference in power at a moto track? Do you think I need that extra low end power on a sandy mx...
Do you see a huge difference in power at a moto track? Do you think I need that extra low end power on a sandy mx track?
i dont notice it on the mx track as much as i do trail riding, where you are not carrying momentum as much,
Tortelli
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Tortelli 10/8/2019 4:58am
10/8/2019 4:58am Edited Date/Time 10/8/2019 4:59am
I have got a “18 SX150 now for the Dutch sand motocross tracks as a “play bike” next to my EXC 300 (enduro / offroad). I really like it, its very light, quick and has got a pretty good suspension setup for my weight (34 5,7 foot and ~140 pounds).

Power from down low is much better as I remember from my old 125’s (1993 and 1999 Honda CR125) and the power on top is more than enough to do all the jumps.
I ride motocross pure for fun, so not fitting into a class is not an issue for me. When you can go bigbore I would always buy a 150 since it doesn’t have any real disadvantages imo.


Travis_Hudson 10/8/2019 5:09am
10/8/2019 5:09am
The one time i rode them back to back, i liked the 125 better, it actually felt alittle faster and puled longer.
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HighPlainsSquid 10/8/2019 7:30am
10/8/2019 7:30am Edited Date/Time 10/8/2019 7:31am
We have both- '04 KX 125, '15 Husky TC 125, '19 KTM 150 SX, and '18 KTM 150 XC-W.

The power difference between the 150 and 125 is much more than you'd think. My son (15) and I (57) "race" all the time and whoever is on the 150 will pull away out of corners and down the straight. But, the 125 is a LOT of fun to ride and given a choice, I usually ride one of the 125's on the MX track (even though my son ends up beating me) because it's so fun to ride. We both MUCH prefer the 150's off-road and race them in hare scrambles and western enduros.

So.... I'd say the 150 is easier to ride and faster, but the 125 is a blast on a MX track.

If you get a 125, it's easier to get a 150 kit than it is to get a 125 kit (you'll have to get all the parts yourself) for the 150.

OH... one more thing... we've changed 2 pistons on the 150 SX. Just put a new Vertex in with 40 h on the old one- that's an even mix of enduro, hare scramble, play riding, and MX. Rings had gone from .016" ring gap new to .018". 70% of the black Vertex coating was still intact. On the 125's... 25 hours tops and the single ring KX 125 piston will be close to the service limit. Not enough experience with the Husky 125 yet but it's a double ring Vertex piston, too. I've got 34 h. on my 150 XC-W and it starts if I look at the kickstarter.

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colintrax 10/8/2019 7:49am
10/8/2019 7:49am
HighPlainsSquid wrote:
We have both- '04 KX 125, '15 Husky TC 125, '19 KTM 150 SX, and '18 KTM 150 XC-W. The power difference between the 150 and...
We have both- '04 KX 125, '15 Husky TC 125, '19 KTM 150 SX, and '18 KTM 150 XC-W.

The power difference between the 150 and 125 is much more than you'd think. My son (15) and I (57) "race" all the time and whoever is on the 150 will pull away out of corners and down the straight. But, the 125 is a LOT of fun to ride and given a choice, I usually ride one of the 125's on the MX track (even though my son ends up beating me) because it's so fun to ride. We both MUCH prefer the 150's off-road and race them in hare scrambles and western enduros.

So.... I'd say the 150 is easier to ride and faster, but the 125 is a blast on a MX track.

If you get a 125, it's easier to get a 150 kit than it is to get a 125 kit (you'll have to get all the parts yourself) for the 150.

OH... one more thing... we've changed 2 pistons on the 150 SX. Just put a new Vertex in with 40 h on the old one- that's an even mix of enduro, hare scramble, play riding, and MX. Rings had gone from .016" ring gap new to .018". 70% of the black Vertex coating was still intact. On the 125's... 25 hours tops and the single ring KX 125 piston will be close to the service limit. Not enough experience with the Husky 125 yet but it's a double ring Vertex piston, too. I've got 34 h. on my 150 XC-W and it starts if I look at the kickstarter.

KTM changed the motor in 2016 so you your 150s are the new design while the 125 are old. Not really a fair comparison.
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Trae_Arnold
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Trae_Arnold 10/8/2019 4:30pm
10/8/2019 4:30pm
HighPlainsSquid wrote:
We have both- '04 KX 125, '15 Husky TC 125, '19 KTM 150 SX, and '18 KTM 150 XC-W. The power difference between the 150 and...
We have both- '04 KX 125, '15 Husky TC 125, '19 KTM 150 SX, and '18 KTM 150 XC-W.

The power difference between the 150 and 125 is much more than you'd think. My son (15) and I (57) "race" all the time and whoever is on the 150 will pull away out of corners and down the straight. But, the 125 is a LOT of fun to ride and given a choice, I usually ride one of the 125's on the MX track (even though my son ends up beating me) because it's so fun to ride. We both MUCH prefer the 150's off-road and race them in hare scrambles and western enduros.

So.... I'd say the 150 is easier to ride and faster, but the 125 is a blast on a MX track.

If you get a 125, it's easier to get a 150 kit than it is to get a 125 kit (you'll have to get all the parts yourself) for the 150.

OH... one more thing... we've changed 2 pistons on the 150 SX. Just put a new Vertex in with 40 h on the old one- that's an even mix of enduro, hare scramble, play riding, and MX. Rings had gone from .016" ring gap new to .018". 70% of the black Vertex coating was still intact. On the 125's... 25 hours tops and the single ring KX 125 piston will be close to the service limit. Not enough experience with the Husky 125 yet but it's a double ring Vertex piston, too. I've got 34 h. on my 150 XC-W and it starts if I look at the kickstarter.

You ever have any problems getting the right jetting on the 125? I heard casual riders like the 150 because the jetting doesn’t have to be spot on. What’s your experience with that?
RCB33
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RCB33 10/8/2019 4:48pm
10/8/2019 4:48pm
Not an exact comparison but the 150 XC W is a great woods bike however, I've heard the 150 SX pulls way harder. I like the fact it's not as much of an "on/off" powerband like a 125 but it also is obviously set up for a different purpose than Moto. The SX may be a totally different feeling bike due to the different transmission and all of that so that's something worth considering in comparison to my bike. I feel like the extra grunt of a 150 while saving $200 seems like an easy choice to me but everyone has a different preferences I guess. No matter what, smaller bore 2 strokes are fun!
Bruce372
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Bruce372 10/8/2019 4:50pm
10/8/2019 4:50pm
HighPlainsSquid wrote:
We have both- '04 KX 125, '15 Husky TC 125, '19 KTM 150 SX, and '18 KTM 150 XC-W. The power difference between the 150 and...
We have both- '04 KX 125, '15 Husky TC 125, '19 KTM 150 SX, and '18 KTM 150 XC-W.

The power difference between the 150 and 125 is much more than you'd think. My son (15) and I (57) "race" all the time and whoever is on the 150 will pull away out of corners and down the straight. But, the 125 is a LOT of fun to ride and given a choice, I usually ride one of the 125's on the MX track (even though my son ends up beating me) because it's so fun to ride. We both MUCH prefer the 150's off-road and race them in hare scrambles and western enduros.

So.... I'd say the 150 is easier to ride and faster, but the 125 is a blast on a MX track.

If you get a 125, it's easier to get a 150 kit than it is to get a 125 kit (you'll have to get all the parts yourself) for the 150.

OH... one more thing... we've changed 2 pistons on the 150 SX. Just put a new Vertex in with 40 h on the old one- that's an even mix of enduro, hare scramble, play riding, and MX. Rings had gone from .016" ring gap new to .018". 70% of the black Vertex coating was still intact. On the 125's... 25 hours tops and the single ring KX 125 piston will be close to the service limit. Not enough experience with the Husky 125 yet but it's a double ring Vertex piston, too. I've got 34 h. on my 150 XC-W and it starts if I look at the kickstarter.

Trae_Arnold wrote:
You ever have any problems getting the right jetting on the 125? I heard casual riders like the 150 because the jetting doesn’t have to be...
You ever have any problems getting the right jetting on the 125? I heard casual riders like the 150 because the jetting doesn’t have to be spot on. What’s your experience with that?
The tc125 2018 we run on good fuel and dialed it in with the supplied extra jets and it runs amazing.

My 2018 was used and came with a lectron, so I dont know about stock. But I am sure it can be dialled in. There are a couple of pooy manufactured seals in the mikini and they can be replaced for $10. I think this is where some of the jetting issues came from.

Otherwise, swapping out for the keihin carbs is another option. But stock should be fine. On the dyno, stock carb gave best air fuel ratios
HighPlainsSquid 10/8/2019 8:09pm
10/8/2019 8:09pm Edited Date/Time 10/8/2019 8:24pm
colintrax wrote:
KTM changed the motor in 2016 so you your 150s are the new design while the 125 are old. Not really a fair comparison.
True but I'm not good enough to use all that _either_ bike has to offer, really. I _definitely_ can't use all that the 150 has to offer.

Last weekend I rode 2 sessions on the '15 Husky and thought "I'll never ride the KX125 again". Then I rode the KX and was "Dang... this old gal still has some game!!!" Mostly the suspension on the KX is setup just a little bit better for me. So, if the difference between an '04 and a '15 wasn't completely ground-shaking- I mean, it wasn't like '77 RM 125 vs '06 RM 125, ya know?- then is the difference between '15 and '16+ that dramatic?
HighPlainsSquid 10/8/2019 8:20pm
10/8/2019 8:20pm
RCB33 wrote:
Not an exact comparison but the 150 XC W is a great woods bike however, I've heard the 150 SX pulls way harder. I like the...
Not an exact comparison but the 150 XC W is a great woods bike however, I've heard the 150 SX pulls way harder. I like the fact it's not as much of an "on/off" powerband like a 125 but it also is obviously set up for a different purpose than Moto. The SX may be a totally different feeling bike due to the different transmission and all of that so that's something worth considering in comparison to my bike. I feel like the extra grunt of a 150 while saving $200 seems like an easy choice to me but everyone has a different preferences I guess. No matter what, smaller bore 2 strokes are fun!
The XC-W pulls _differently_ from the SX. I have mine modded with an RK Tech insert and worked on the jetting and powervalve spring quite a bit. It hits pretty hard down low and mid-range and then still pulls good on the top. The SX is weaker on the bottom with a stronger mid and top. In a drag race/start, I usually get the jump for about 30 yards and can maintain that. But once we get actually riding around a course with turns, I have to shift more from 1-3, thanks to the tighter gears, while the SX will pull longer in each and I lose a little ground there. Plus, my son is just faster than me.

FWIW, I had the XC-W suspension done by Kreft and it made a huge difference.

As far as the jetting goes on the Husky 125... we bought it used and it's jetted _really_ good. It's the crispest running bike we've got, actually. On the 150 XC-W doing all the Jarvis mods and the jet block gasket helped a little but getting the RK Tech head insert _really_ helped. It's still not super crisp, but it's good enough that I don't feel like spending another $500 on whatever carb just right now.

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burn1986
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burn1986 10/8/2019 8:30pm
10/8/2019 8:30pm Edited Date/Time 10/8/2019 8:31pm
HighPlainsSquid wrote:
We have both- '04 KX 125, '15 Husky TC 125, '19 KTM 150 SX, and '18 KTM 150 XC-W. The power difference between the 150 and...
We have both- '04 KX 125, '15 Husky TC 125, '19 KTM 150 SX, and '18 KTM 150 XC-W.

The power difference between the 150 and 125 is much more than you'd think. My son (15) and I (57) "race" all the time and whoever is on the 150 will pull away out of corners and down the straight. But, the 125 is a LOT of fun to ride and given a choice, I usually ride one of the 125's on the MX track (even though my son ends up beating me) because it's so fun to ride. We both MUCH prefer the 150's off-road and race them in hare scrambles and western enduros.

So.... I'd say the 150 is easier to ride and faster, but the 125 is a blast on a MX track.

If you get a 125, it's easier to get a 150 kit than it is to get a 125 kit (you'll have to get all the parts yourself) for the 150.

OH... one more thing... we've changed 2 pistons on the 150 SX. Just put a new Vertex in with 40 h on the old one- that's an even mix of enduro, hare scramble, play riding, and MX. Rings had gone from .016" ring gap new to .018". 70% of the black Vertex coating was still intact. On the 125's... 25 hours tops and the single ring KX 125 piston will be close to the service limit. Not enough experience with the Husky 125 yet but it's a double ring Vertex piston, too. I've got 34 h. on my 150 XC-W and it starts if I look at the kickstarter.

colintrax wrote:
KTM changed the motor in 2016 so you your 150s are the new design while the 125 are old. Not really a fair comparison.
Well, that’s half true. The 2015 (and earlier models) was a purpose-built 150 (144) with a different engine, pipe, cylinder, etc from the 125. The ‘15 was a “true” 150, unlike today’s, which is a 125 with a 144 kit bolted on (bored/replated cylinder and piston). The ‘15 retained all the good characteristics of a 125 but with more power everywhere.
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Bruce372
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Bruce372 10/8/2019 8:37pm
10/8/2019 8:37pm
Oh here we go, a 58mm 144 won't rev bullshit
DynoDan22
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DynoDan22 10/8/2019 9:00pm
10/8/2019 9:00pm
Bruce372: Classic! Hahahaha! My '18 150sx must have been a magical over-square engine that actually revved! Peak and over-rev was incredible on that bike. Maybe I stumbled on the perfect powervalve spring and adjustment and thirty six iterations of Mikuni getting specs (S1 or S4 nozzle?) and finally did the impossible! I got an over-square small bore to rev!!! Hahaha
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Bruce372 10/8/2019 9:15pm
10/8/2019 9:15pm
DynoDan22 wrote:
Bruce372: Classic! Hahahaha! My '18 150sx must have been a magical over-square engine that actually revved! Peak and over-rev was incredible on that bike. Maybe I...
Bruce372: Classic! Hahahaha! My '18 150sx must have been a magical over-square engine that actually revved! Peak and over-rev was incredible on that bike. Maybe I stumbled on the perfect powervalve spring and adjustment and thirty six iterations of Mikuni getting specs (S1 or S4 nozzle?) and finally did the impossible! I got an over-square small bore to rev!!! Hahaha
Eric Gorr did a rm144 back in 2006 that ran a 58mm piston and that thing revved like no other bike I've ridden. It sounded like a 125 moto GP road racer!

The whole over squared thing was a bunch of bullshit cooked up by magazines selling proprietary 57mm pistons for their advertisers
kage173
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kage173 10/9/2019 4:18am
10/9/2019 4:18am
150 for beginner. More bottom end which is where you'll struggle because you wont stay on the pipe.

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Matt_Paderta
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Matt_Paderta 10/9/2019 4:51am
10/9/2019 4:51am
I rode both bikes at a demo day this year, the 150 does not have bottom end, I absolutely hated riding that bike! Hard to keep on the pipe

The 125 is so much better, it actually felt faster. Get the 125 and you can always buy the 150 cylinder kit later if you want.

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RCB33 10/9/2019 5:09am
10/9/2019 5:09am
RCB33 wrote:
Not an exact comparison but the 150 XC W is a great woods bike however, I've heard the 150 SX pulls way harder. I like the...
Not an exact comparison but the 150 XC W is a great woods bike however, I've heard the 150 SX pulls way harder. I like the fact it's not as much of an "on/off" powerband like a 125 but it also is obviously set up for a different purpose than Moto. The SX may be a totally different feeling bike due to the different transmission and all of that so that's something worth considering in comparison to my bike. I feel like the extra grunt of a 150 while saving $200 seems like an easy choice to me but everyone has a different preferences I guess. No matter what, smaller bore 2 strokes are fun!
HighPlainsSquid wrote:
The XC-W pulls _differently_ from the SX. I have mine modded with an RK Tech insert and worked on the jetting and powervalve spring quite a...
The XC-W pulls _differently_ from the SX. I have mine modded with an RK Tech insert and worked on the jetting and powervalve spring quite a bit. It hits pretty hard down low and mid-range and then still pulls good on the top. The SX is weaker on the bottom with a stronger mid and top. In a drag race/start, I usually get the jump for about 30 yards and can maintain that. But once we get actually riding around a course with turns, I have to shift more from 1-3, thanks to the tighter gears, while the SX will pull longer in each and I lose a little ground there. Plus, my son is just faster than me.

FWIW, I had the XC-W suspension done by Kreft and it made a huge difference.

As far as the jetting goes on the Husky 125... we bought it used and it's jetted _really_ good. It's the crispest running bike we've got, actually. On the 150 XC-W doing all the Jarvis mods and the jet block gasket helped a little but getting the RK Tech head insert _really_ helped. It's still not super crisp, but it's good enough that I don't feel like spending another $500 on whatever carb just right now.
Not trying to derail the thread but thanks for the advice on the 150, right now I've kept it completely stock(I'm in the prime weight for the suspension so haven't even messed with it much) but I've been beginning to wonder how I could improve it here and there because I feel like it's a great bike but that doesn't mean it couldn't be even better. I prefer it in a 2 hour hare scramble to a 250, I've rode a '19 250xc and '18 250f briefly and I just didn't gel with them like I have with the 150.

RCB33
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jeffro503
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jeffro503 10/9/2019 11:39am
10/9/2019 11:39am
I had been seriously thinking of doing a 150 build either on my 125 ( 17' TC 125 ) or pick up a new 2020 Husky and doing the build on that. My issue with the 150 is lack of over-rev , since my 125 screams compared to one.

I'm wondering if it's possible to do a bunch of port work , as to keep the 150 bottom power , but add in some over-rev that's similar to my 125? If that isn't possible , then I'm definitely sticking with the 125. To me , the top end , over shadows the lack of low end grunt.
Travis_Hudson 10/9/2019 11:44am
10/9/2019 11:44am
jeffro503 wrote:
I had been seriously thinking of doing a 150 build either on my 125 ( 17' TC 125 ) or pick up a new 2020 Husky...
I had been seriously thinking of doing a 150 build either on my 125 ( 17' TC 125 ) or pick up a new 2020 Husky and doing the build on that. My issue with the 150 is lack of over-rev , since my 125 screams compared to one.

I'm wondering if it's possible to do a bunch of port work , as to keep the 150 bottom power , but add in some over-rev that's similar to my 125? If that isn't possible , then I'm definitely sticking with the 125. To me , the top end , over shadows the lack of low end grunt.
I could be wrong, but i think i was told the magic combo is to get the stoke versus bore correct and you can get one to scream.
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SmokinJoe439 10/9/2019 12:48pm
10/9/2019 12:48pm
My 06 yz144 screams up top but i had gorr port it for mid n top. The other important change was going to a 14 tooth sprocket.

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Bruce372
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Bruce372 10/9/2019 1:11pm
10/9/2019 1:11pm
jeffro503 wrote:
I had been seriously thinking of doing a 150 build either on my 125 ( 17' TC 125 ) or pick up a new 2020 Husky...
I had been seriously thinking of doing a 150 build either on my 125 ( 17' TC 125 ) or pick up a new 2020 Husky and doing the build on that. My issue with the 150 is lack of over-rev , since my 125 screams compared to one.

I'm wondering if it's possible to do a bunch of port work , as to keep the 150 bottom power , but add in some over-rev that's similar to my 125? If that isn't possible , then I'm definitely sticking with the 125. To me , the top end , over shadows the lack of low end grunt.
Get the 150 kit, they make loads of top end power.

If you dont like it, I'll buy it off you.

$850 for that kit really is a bargain for what you get.... but anyone claiming a 58mm 144 won't rev, obviously hasn't ridden a well setup one.
jeffro503
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jeffro503 10/9/2019 4:28pm
10/9/2019 4:28pm
jeffro503 wrote:
I had been seriously thinking of doing a 150 build either on my 125 ( 17' TC 125 ) or pick up a new 2020 Husky...
I had been seriously thinking of doing a 150 build either on my 125 ( 17' TC 125 ) or pick up a new 2020 Husky and doing the build on that. My issue with the 150 is lack of over-rev , since my 125 screams compared to one.

I'm wondering if it's possible to do a bunch of port work , as to keep the 150 bottom power , but add in some over-rev that's similar to my 125? If that isn't possible , then I'm definitely sticking with the 125. To me , the top end , over shadows the lack of low end grunt.
Bruce372 wrote:
Get the 150 kit, they make loads of top end power. If you dont like it, I'll buy it off you. $850 for that kit really...
Get the 150 kit, they make loads of top end power.

If you dont like it, I'll buy it off you.

$850 for that kit really is a bargain for what you get.... but anyone claiming a 58mm 144 won't rev, obviously hasn't ridden a well setup one.
Thanks Bruce ( and you other two ). I have been able to ride a pretty new 19' SX150. Fellow members and good buddy of mine ( IanMac 138 ). I loved the bottom end on his bike , but definitely liked my mid range and top a lot more on my 125. We swapped for a practice and he even said he couldn't believe the over-rev on my bike. On a tiddler , it's extremely important in my eyes.

I'm out with an injury right now , and my season is pretty much wrecked , but will definitely think about doing a modified 150 build. Not really sure I need a 2020 , so I'll probably mod the one I have and see what happens.

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