yamahakid199106 Posted March 31, 2015 I recently purchased a 2005 rm 125 and I want it to make it my race bike. What mods should I put on the bike to make it a good race bike. It already has a fmf exhaust on it. Any ideas thank you Share this post Link to post Share on other sites
Yzrider1023 My Ride Posted March 31, 2015 I'd say that's a good start just get the suspension valved for your weight 1 Share this post Link to post Share on other sites
klr250rida Posted March 31, 2015 I recently purchased a 2005 rm 125 and I want it to make it my race bike. What mods should I put on the bike to make it a good race bike. It already has a fmf exhaust on it. Any ideas thank you Those things usually come race ready. I'd just do what he said and adjust suspension, maybe chain and a larger rear sprocket for better acceleration out of the hole shot. 1 Share this post Link to post Share on other sites
yamahakid199106 Posted March 31, 2015 What's the difference if I did that or brought one tooth down in the front? Is there a reason you said rear sprocket? Share this post Link to post Share on other sites
Yzrider1023 My Ride Posted March 31, 2015 What's the difference if I did that or brought one tooth down in the front? Is there a reason you said rear sprocket? bigger rear sprockets give better throttle response but smaller ones have more top speed stay with stock sprocket in front 1 Share this post Link to post Share on other sites
