S&S Cycle 900-0564 124in. Hot Set Up Kits with Heads engine-valve-train-camshafts large diameter tapered sprocket shaft

large diameter tapered sprocket shaft that provides more contact area for increased strength

1979-1980 Suzuki RM250

2001-2009 Yamaha WR250F

engines are boosted to 100in

milled fine grain

S&S Cycle 900-0564 124in. Hot Set Up Kits with Heads engine-valve-train-camshafts large diameter tapered sprocket shaftThe S&S Hot Setup kit for Twin Cams allows a Twin Cam owner to convert a stock 88in. engine to 124in. using the stock crankcases. Include 4 1 8in. bore cylinders and forged dished pistons, an S&S 4 5 8in. stroke flywheel assembly, a set of S&S . 640in. lift chain drive Easy Start cams, tappets, S&S Quickee adjustable pushrods, roller rocker arms, and all hardware, gaskets and instructions. 10. 4: 1 compression ratio with stock cylinder heads; 10. 2: 1