KX250F Kits Stage 1 Includes: Carb mod rejetted bog free and easier starting (does not include rebuild parts) TLR Valve spring kit Recondition head(clean, inspect and recut valve seats) Head gasket and valve guide seals OEM valves HP outputs are with an aftermarket exhaust system with the stages listed below. Stock is 35 hp at the rear wheel on the 08-09. Stage 2 for (pump gas) Includes 1 plus: Porting NGK Race Plug (for quicker starting and better throttle response) Stage 3 for (race gas only) Includes 1-2 plus: TLR intake valves Wiseco piston kit Hone and lap cylinder (cleaned and prepped) Base gasket Stage 4 for (race gas only) Includes 1-2-3 plus: TLR billit cam Install seats with (Hi flow valve seat cutting) With this kit the motor should be sent in for proper clearance checks. NOTE: To maintain proper performance the most over looked part is the cam chain. When ever you do a top end it would be wise to change the cam chain.