Posts
5
Joined
6/10/2025
Location
Kersey, PA
US
Hello. My son is 12 years old and has a KTM 85SX. It is a little too much power for him. He likes to ride the motocross track for fun (but he's not into racing motocross) He hits the jumps and clears them, etc. But is just not very competitive.. he enjoys riding my klx 140 but says it's not fast enough. We do more trail riding than anything. Of course he loves the fact that he has a ktm 85, but I'm worried that he's either going to get hurt or loose interest in riding because he's not on the right bike... what bike would you suggest.? He's about 5' tall 100 pounds.
Challenge him to a race, you ride the KLX140:
if you win, then he can't say the KLX140 is not fast enough because he got beat by it while on his 85.
If you lose, then you'll lose all credibility with your son until he's about 25 years old.
Any way to detune his current ride till he grows into a full-size option? Not too familiar with the 85cc market, but gearing, a flywheel weight, exhaust options, lowering compression, etc. are all 2T go-to’s for dialing in your ride…
Does your son say the bike has too much power for him? It sounds like he likes it and clears all the jumps.... I'm confused. It sounds like he already has the right bike. Are you just worried for him?
I think the larger KTM 2ts may have changeable pullies, but, I've no idea if that is also the case with the 85s.
So, perhaps look into aftermarket slower turn / slower ramp up throttles - G2 have this :
https://www.g2ergo.com/shop/g2-dirt-throttle-tamer-ktm/?attribute_pa_model=85-18-25
That, would be the easiest way to tame things down, at a reasonable price, and very easy to fit.
Post a reply to: The right bike..