I have been reading alot about diffrent motors, to build up for me after this year, But from what iv decided i think that im going to go with a 416 bore, And a 4mm stroke, witch should put me around a 440stroker!!!, U still have a small/light pistion, that will rev quicker, and U will increase the stroke, whitch should increase tourge also!!! I think thats gona be my motor of choice, and then when im done with that, I might go bigger mabey 465/ or FST500!!! this might not help you, But thats what i have been thinking about for me!!!!
05 Gt Thunder Trx490r
WHITEHORSE RACING
RISSLER EXTEREME ATV
PRM, AXE racing, FASST bars, GPR, IMS-Roll, DID chains, HRC, JT sprockets, GT Thunder link, Hipers, Maxxis, Tire Balls, Custom Axis, LSR (stem,arms swinger carrier hubs), Axecalliber axil, QuadTech, T&T Racing, Spider, UNI, Pivot works, mxprographx,
WHITEHORSE RACING Trx416ex
Razor 2's 23"-22"s,IMS tank,Galfer Steal Brake Lines,Denton Stabilizer,Herrmann +1 swingarm,Herrmann Racing Seat latch,Hotcams Stage one,Port and polish,Dynojets,Wesico,Tag Bars,PRM Bumper,PRM Skids,Rad carriers,Spyder grips,All Balls,LRD Exhaust,Green Frame,Stock Red Front Plastic,Gray Maier Rear Plastics ,Elkas Shocks Up Front,STocker Rear Shock,Blown elka rear in the shop!
Knox Racing 1987 trx250r (under construction)