mods n shiznit

i have a 400ex and it has a white brothers e series and stage 3 jetkit and k+n airfilter, wat is my best bet for speed? And how do I get the copression up to 12:1 or 13:1?

are there any nitrous kits for ATVs???:devil

[51]

you want top speed?... sprokets smaller in the rear larger in the front ..... your comprtession youll have to get a piston... and remeber if you go above 11.1 then you'll have to run race gas which isn't cheap....and yes they do make n.o.s. kits for quads..lol.. but if you want one then your taking your compression the wrongf way you want to go down if you gte nos..

you might want to think about a cam for you engine or maybe a carb..let me know if you have anyt further ?'s