Please could you tell me what are the cheapest but best parts to improve the get away and imrpove the break horse power on an motocrosser kx85 plus what is the best racing air filter that i can get for this bike
brake hourse power? no such thing. re post a new questions and i can help. race with a UNI air filter and it is great.
Buy some boueson reeds, get a K&N air filter and maybe a better spark plug
Boysen race reeds, a high flow air filter ( K& N, or similar), and a Wiseco piston kit. Flowing the ports, will also make a big difference. If you've got the dollars, an after market expansion chamber will also do a treat. All up, though, why not just buy a KX 125 ? It'll be cheaper than suping up your 80.
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