S&S Cycle 920-0100 107" Big Bore Forged Pistons For 2007-'16 HD® Big Twins - 3.937" Standard Bore tower Zippered cuffs

Zippered cuffs

Magnum Shielding 0610-0942

Allows stock fairing vent to open and close

5" 11" 28" Download Installation Instructions

Drag Part # 0601-4774

S&S Cycle 920-0100 107" Big Bore Forged Pistons For 2007-'16 HD® Big Twins - 3.937" Standard Bore tower Zippered cuffsS&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