2015 SX250/TC250 Suggested Mods

mx617 wrote:

@swtwtwtw that's interesting, but I didn't read it in mxa. Have you tried it? Or what makes you say that?

Sixeightone wrote:

Here's my stallion! 2014 tc250. In the picture it was converted to a 300sxs. I'm back to a modified 250 now! [img]https://p.vitalmx.com/photos/forums/2015/03/05/82569/s1200_bike.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2015/03/05/82570/s1200_bike_2.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2015/03/05/82571/s1200_bike_3.jpg[/img]

Here's my stallion! 2014 tc250. In the picture it was converted to a 300sxs. I'm back to a modified 250 now!

whit14 wrote:

Has anyone tried using a flywheel weight on their bikes? I just installed one on my bike, looking forward to seeing the difference next weekend.

whit14 wrote:

Has anyone tried using a flywheel weight on their bikes? I just installed one on my bike, looking forward to seeing the difference next weekend.

hylo wrote:

I've been having problems with my jetting lately! It may be that I'm not very good with jetting and carbs, but still. Kinda annoying. Haven't tried...

I've been having problems with my jetting lately! It may be that I'm not very good with jetting and carbs, but still. Kinda annoying.

Haven't tried NECJ, 175 main and 40 pilot just yet (what kind of temp are you guys running that on?)


I'm running this setup:
Pilot: 40
Main: 160
Needle: N1EG - clip 3
Air screw: 1 3/4 out

It seems to be too rich when starting the bike - I don't need any choke to fire her up. How to lean that out? Even smaller pilot or adjust the air screw in? Or bigger pilot with more air?
Any suggestions?

hoova wrote:

Hey guys I've got a 15 ktm 250 sx and have a few questions. First off I want to get a pipe and silencer Combo that...

Hey guys I've got a 15 ktm 250 sx and have a few questions. First off I want to get a pipe and silencer Combo that smoothes out the mid range and adds some over rev. Second I hate the way this bike handles... My current settings are 108mm sag, forks on the second line and fork and shock springs to suite my weight. I feel it tries to stand in corners, it's front busy in corners and pops out of ruts too easily. As a reference my last bike was a 2013 250 sx with the pro circuit longer link, 108mm sag and forks flush. wat can I buy/do to fix these problem?

Matt

hoova wrote:

Hey guys I've got a 15 ktm 250 sx and have a few questions. First off I want to get a pipe and silencer Combo that...

Hey guys I've got a 15 ktm 250 sx and have a few questions. First off I want to get a pipe and silencer Combo that smoothes out the mid range and adds some over rev. Second I hate the way this bike handles... My current settings are 108mm sag, forks on the second line and fork and shock springs to suite my weight. I feel it tries to stand in corners, it's front busy in corners and pops out of ruts too easily. As a reference my last bike was a 2013 250 sx with the pro circuit longer link, 108mm sag and forks flush. wat can I buy/do to fix these problem?

Matt

hoova wrote:

Hey guys I've got a 15 ktm 250 sx and have a few questions. First off I want to get a pipe and silencer Combo that...

Hey guys I've got a 15 ktm 250 sx and have a few questions. First off I want to get a pipe and silencer Combo that smoothes out the mid range and adds some over rev. Second I hate the way this bike handles... My current settings are 108mm sag, forks on the second line and fork and shock springs to suite my weight. I feel it tries to stand in corners, it's front busy in corners and pops out of ruts too easily. As a reference my last bike was a 2013 250 sx with the pro circuit longer link, 108mm sag and forks flush. wat can I buy/do to fix these problem?

Matt

KTMShane699 wrote:

The smoothest pipe out there is probably Bill's with a long silencer. And if you hate how the bike handles, it might be in your sag...

The smoothest pipe out there is probably Bill's with a long silencer.

And if you hate how the bike handles, it might be in your sag. 108mm is a lot of sag. A lot of recommendations at the 103-105 range. I found I liked min at the 100-102 range. I always ran the forks at the first line on them and not flush to the caps. You're doing everything with your setup to make the bike super stable and trading your quick handling for it.

I'd try less sag, adjust your forks up. If you're still not happy, the adjustable offset triple clamp works great. I ran it on my 250 and loved it.

Shane

Digger29 wrote:

Your 15's link is identical to all of the aftermarket links that's why nobody has one available for the 15. I'd go to 100-102 on the...

Your 15's link is identical to all of the aftermarket links that's why nobody has one available for the 15. I'd go to 100-102 on the sag and run the forks up in the clamps on the 2nd line. Unfortunately the 4CS is probably the worst fork ever and I'm afraid that the fork could be most of your problem. Get them done by a reputable tuner who has extensive knowledge with WP's 4CS fork and its issues and I'm sure after that is done that you'll love your bike. The Bill's pipe and MX2 silencer is without a doubt the best pipe available for the 250/300SX right now. It's super smooth and revs to the moon. Get it and you'll thank me later :-)

Markopolo400 wrote:

Is the linkage different on the 15 vs the 14?

Sixeightone wrote:

Start by ordering a V-force 4 reed assembly. Set your deck height. Set your powervalve dimension correctly. Get a carb off a 125/150 38mm. DO NOT...

Start by ordering a V-force 4 reed assembly. Set your deck height. Set your powervalve dimension correctly. Get a carb off a 125/150 38mm. DO NOT oval bore it or intelajet it. You're going to order a NECJ needle from a 2008 rm250. with a 175 main 42 Pilot and the clip in the 4th position from the top. You're going to run the stock 6.5 slide, and turn your air screw out 2 turns! Put the red powervalve spring in, some people like it turned in, I like to run it flush. Bills offers the best all around power for a pipe and silencer combo, obviously shorty for quick revving power, longer for faster straighter tracks. Dial in your suspension, get the ktm phds anti vibe bar mounts so your arms don't fall off, take it to the track and hold her wideeeee!! have fun on that thing you're going to love it!!

Johnboy

Sixeightone wrote:

Start by ordering a V-force 4 reed assembly. Set your deck height. Set your powervalve dimension correctly. Get a carb off a 125/150 38mm. DO NOT...

Start by ordering a V-force 4 reed assembly. Set your deck height. Set your powervalve dimension correctly. Get a carb off a 125/150 38mm. DO NOT oval bore it or intelajet it. You're going to order a NECJ needle from a 2008 rm250. with a 175 main 42 Pilot and the clip in the 4th position from the top. You're going to run the stock 6.5 slide, and turn your air screw out 2 turns! Put the red powervalve spring in, some people like it turned in, I like to run it flush. Bills offers the best all around power for a pipe and silencer combo, obviously shorty for quick revving power, longer for faster straighter tracks. Dial in your suspension, get the ktm phds anti vibe bar mounts so your arms don't fall off, take it to the track and hold her wideeeee!! have fun on that thing you're going to love it!!

Johnboy

gameover wrote:

Today was the first time I finally got to ride my 15 tc250. First thing I did was a necj 2008 rm250 needle on the 4th...

Today was the first time I finally got to ride my 15 tc250. First thing I did was a necj 2008 rm250 needle on the 4th clip, 172 main, and a 42 pilot. Power valve screw set flush and air screw two turns out. Stock exhaust....bills pipe gets here on Monday. I also went with 14/51 gearing.

I'm in Florida. Today's weather was in the low 80s. What carb settings do you recommend?

I sold my 2008 rm250........well, what a disappointment this 15 tc250 is!! Its got nothing on the bike it replaced. Its not as snappy and it stops reving pretty quick.

What am I doing wrong? Ran it at 50:1

rocketsocks26 wrote:

[img]https://p.vitalmx.com/photos/forums/2015/04/25/88854/s1200_20150423_152005.jpg[/img] Just put the bills pipe on my bike, gonna ride it tomaro and ill tell ya how it is, I have the pro circuit and...

Just put the bills pipe on my bike, gonna ride it tomaro and ill tell ya how it is, I have the pro circuit and fmf and scalvini, out of those 3 the scalvini is by far the best, ive been told the bills is way better than the all of them! I ll know tomaro lol, I also have a 38mm carb and a jbonemotorworks ported/head 300sx. My jetting is 178main, 42 pilot, necj 3rd clip. Strickly for vpc12 and its jetted to perfection, this bike is a blast to ride!!!

rocketsocks26 wrote:

[img]https://p.vitalmx.com/photos/forums/2015/04/25/88854/s1200_20150423_152005.jpg[/img] Just put the bills pipe on my bike, gonna ride it tomaro and ill tell ya how it is, I have the pro circuit and...

Just put the bills pipe on my bike, gonna ride it tomaro and ill tell ya how it is, I have the pro circuit and fmf and scalvini, out of those 3 the scalvini is by far the best, ive been told the bills is way better than the all of them! I ll know tomaro lol, I also have a 38mm carb and a jbonemotorworks ported/head 300sx. My jetting is 178main, 42 pilot, necj 3rd clip. Strickly for vpc12 and its jetted to perfection, this bike is a blast to ride!!!

JBernard_401 wrote:

how noticable was the porting and head work on the 300? did it set you back very much?

JBernard_401 wrote:

how noticable was the porting and head work on the 300? did it set you back very much?

JBernard_401 wrote:

how noticable was the porting and head work on the 300? did it set you back very much?

KTMShane699 wrote:

I also have a JBone Motorworks motor in my 250. He matched and ported the cases, as well as the cylinder and head. JBone is a...

I also have a JBone Motorworks motor in my 250. He matched and ported the cases, as well as the cylinder and head. JBone is a great guy to work with and does his work at a very fair price. He's super knowledgable about what he's doing in order to give you what you want for power and not a "universal" porting job.

All of that being said, I wanted solid all-around power. Probably a simple request? More power everywhere. Well, after a lengthy discussion with JBone himself that determined what type of fuel I was currently running/would have to run, what was done to the bike already for mods and that I wanted a motor that was smooth and tractable...he was cut loose.

What came back was well packaged for shipping and included the proper items required to set squish according to what needed to be done. An evening putting the bike back together and she was ready to rip.

Unfortunately, I didn't log a lot of time on my JBone Motor before I broke my leg. What I can tell you about the time I did log is that the motor is super smooth and easy to ride. It doesn't hit violently. It's also deceptively fast. You don't even realize how fast you're going on it before it's happening. One of the things JBone had told me was that it would be torquey and put down a lot of power all the way to the ground...very similar to that of a four stroke. Having ridden my 450FE back to back with it, I'd say he delivered exactly what he said he would. In full disclosure to that last statement, I'm new to really riding four strokes. I know and understand that the nuances are something I have to look forward to in order to make the best two stroke/four stroke comparison. But the lack of having to shift and the smooth power delivery, along with the ease to go fast are things I can say without hesitation.

My cell phone photos of his work don't do it justice, but here are some photos. And if you're looking to get some motor work done, JBone at least deserves a call so you can evaluate him yourself. His number is 860-428-5528. And his prices are very competitive for the service you get and how individualize it is.

Shane

JBernard_401 wrote:

how noticable was the porting and head work on the 300? did it set you back very much?

KTMShane699 wrote:

I also have a JBone Motorworks motor in my 250. He matched and ported the cases, as well as the cylinder and head. JBone is a...

I also have a JBone Motorworks motor in my 250. He matched and ported the cases, as well as the cylinder and head. JBone is a great guy to work with and does his work at a very fair price. He's super knowledgable about what he's doing in order to give you what you want for power and not a "universal" porting job.

All of that being said, I wanted solid all-around power. Probably a simple request? More power everywhere. Well, after a lengthy discussion with JBone himself that determined what type of fuel I was currently running/would have to run, what was done to the bike already for mods and that I wanted a motor that was smooth and tractable...he was cut loose.

What came back was well packaged for shipping and included the proper items required to set squish according to what needed to be done. An evening putting the bike back together and she was ready to rip.

Unfortunately, I didn't log a lot of time on my JBone Motor before I broke my leg. What I can tell you about the time I did log is that the motor is super smooth and easy to ride. It doesn't hit violently. It's also deceptively fast. You don't even realize how fast you're going on it before it's happening. One of the things JBone had told me was that it would be torquey and put down a lot of power all the way to the ground...very similar to that of a four stroke. Having ridden my 450FE back to back with it, I'd say he delivered exactly what he said he would. In full disclosure to that last statement, I'm new to really riding four strokes. I know and understand that the nuances are something I have to look forward to in order to make the best two stroke/four stroke comparison. But the lack of having to shift and the smooth power delivery, along with the ease to go fast are things I can say without hesitation.

My cell phone photos of his work don't do it justice, but here are some photos. And if you're looking to get some motor work done, JBone at least deserves a call so you can evaluate him yourself. His number is 860-428-5528. And his prices are very competitive for the service you get and how individualize it is.

Shane

rocketsocks26 wrote:

alsome pics shane!!!