S&S Cycle 920-0100 107" Big Bore Forged Pistons For 2007-'16 HD® Big Twins - 3.937" Standard Bore Stage 3 Custom Dynamics 20402838

Custom Dynamics 20402838

• SHAFT HEIGHT: 4

SIZE RANGE: MD - 5X

S&S Cycle 550-1029A

7230223 fits most kids 4-14

S&S Cycle 920-0100 107" Big Bore Forged Pistons For 2007-'16 HD® Big Twins - 3.937" Standard Bore Stage 3 Custom Dynamics 20402838S&S Cycle 920 0100 These big bore pistons work with the stock 4 3 8" stroke flywheels to convert any 2007 '16 HD big twin engine from 96" or 103" to 107" displacement with 10. 4: 1 compression with stock heads. Stock cylinders may be bored to accommodate larger pistons, but we recommend S&S 3. 927" bore cylinders which feature high strength alloyed cast iron liners. Pistons are compatible with stock rods with tapered wristpin ends. S&S 3. 927" bore