S&S Cycle 320-0396 3-Piece Flywheel - 4in. Stroke helmets-offroad-helmets Tests cold cranking amps (CCA)

Tests cold cranking amps (CCA) on all 12 volt lead acid

External and internal design and materials densities are optimized for maximum protection from linear and oblique acceleration impacts

2005-2008 Suzuki C90 Boulevard

2010-2012 Triumph Speed Triple

replaceable screw-mounted slider insert

S&S Cycle 320-0396 3-Piece Flywheel - 4in. Stroke helmets-offroad-helmets Tests cold cranking amps (CCA)With sprocket bearing race Vast improvement over stock flywheels which shift out of true under heavy load. Heat treated 4140 material is 114% stronger than stock, eliminates thrust washer. Larger 1. 671in. crankpin, increased cross sectional area for increased crank pin clamping force. No welding required. Integral mainshafts, truer flywheels and less vibration. Notes: Strokes longer than stock will require S&S piston oiler set #31 2026. 07 up stock