S&S Forged Stock Bore Stroker Piston Kit 3.487 Bore Features Forged stock bore stroker piston which replaces several cast and forged piston series that S&S Cycle previously offered The new piston can be used in 84, 86 and 88 stock bore stroker engines with stock diameter flywheels The modern alloys used in the piston, coupled with the advanced skirt profiles, result in low engine noise and long engine life that could only be achieved with cast pistons in the past Features forged pistons for superior strength, modern alloys and piston skirt profiles for low noise and long engine life and dome volume 50cc +.050