Yeah there's not much aftermarket or performance parts for the 85-86, good pipe , porting , try tony ducas racing reeds, they offer two styles, standard an carbon fiber , get the carbon fiber, u can find them at jl atv products .com , if I'm correct I remember there was a company out here in Cali called 1dirracing they mad a billet reed cage for our bikes, I have one an It did great an still have it on motor. Had bike on a dyno abt two years ago it added 2 hp on my 86, with my set up I'm at 36 hp , stock was like 18 - 19 I believe ...