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Only $10 for all 2026 SX, MX, and SMX series.
1. 18" rear wheel, I was getting a lot of flats and thrashing the rim on the 19"
2. 2 teeth up rear sprocket for the really tight stuff
3. Handguards for CA enduro brush
4. Offroad style skid plate for CA endoro rocks
5. I soften the suspension a little because of the chop but, I don't go too much because g outs at speed on soft suspension is a bad deal.
I've got an '82 Husqvarna 125XC now that I race in vintage off road races.
I also have an '84 KTM125MXC that I race in vintage off road.
You have to be aggressive and conserve momentum at all costs, which can lead to some odd line choices and you cant be lazy. Even at almost 48 years old, in most situations I think I can go just as fast on a 125 as I can on a bigger bike. At this point in my riding/racing "career" all I care about is having fun, and for me, there is nothing more fun that wringing a 125/150s neck for all its worth. I am small at 5"8" and 145lbs though, so that does make it easier for me than for a larger rider.
As for race prep, all you would really need to do is get hand guards, some sort of skid plate (I dont use full size, I use MX "glide" plates), a couple tooth larger rear sprocket and possibly a larger tank. I have one modern 125 set up for MX and one for off road so the off road bone has suspension valved and sprung much softer than stock, but you could get away with just springs and clickers.
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http://www.maxrpms.com/yz167-big-borestroker/
-KTM 125SX
-18" rear wheel
-Rekluse yes, that's right
-normal stuff for woods set up
We ride mostly tight stuff. Open and fast courses would be tough for a 125 IMO
Brushy Mountain NCHSA race, last one for me. Arthritis is a bitch.
Street legal 150
Pit Row
Have you done any motor work? That year KX isn't exactly known as fast, but James Stewart showed us it was plenty competitive
I have an 09' Husky cr144, which has stock motor/carb, but suspension softened and resprung for my weight (210#). Second bike is a 14' Husky CR165 (all bore, no stroker crank) with a 36mm Lectron, KTM 200 FMF fatty/turbine core II, Steahly 10oz FWW, high comp head and the usual armor pieces.
The 165 with the KTM pipe is a beast. It doesn't rev out quite as well with the heavier slug and 200 pipe, but the low end and (especially) the midrange are crazy strong. No clutch work required to keep this one in the revs and it will plunk around at idle all day. It really blurs the line between a 125 and 250.
KTM 200's are based off 250 cases/cranks and still feel like big bikes. This bike still feels like a free revving 125 with 30% more power. Plus, I picked up each one for a song and dance. I have these 2 bikes for serious single track and a KTM500 for dual sporting & dez trips. I sold the YZ250 & WR300 as I just stopped riding them once I got into the small bores.
My buddy says "its funner to ride a slow bike fast then a fast bike slow" and he is exactly right!
Have you done any motor work? That year KX isn't exactly known as fast, but James Stewart showed us it was plenty competitive
No motor mods just proper jetting runs great
RM-X 144XC
2006 RM125XC project. The seat has been finished since this Pic. Had to extend it
Edit: That's actually my spare 2002 engine. Has the 06 in it now, with a Scalvini cone section pipe and carbon silencer.
Once the engine's been to TSP she'll have 42rwhp. About the same as a 2016 KTM150.
I have new 2014 RMZ250 suspension for it as well.
Seat cover is the same as the 144AF. Custom made seat foam. Nice and flat from the tank to the rear guard.
Busted!
Post a reply to: 125 2-Smokers For Enduro/Off-road