S&S 106-4414 Cycle 99-06 BT 3.927in +.010in Bore 97in Big Bore Forged Pistons

S&S 106-4414 Cycle 99-06 BT 3.927in +.010in Bore 97in Big Bore Forged Pistons

Brand: S&S Cycle

MPN: 106-4414

Product Department: Engine Components

Product Category: Piston Sets - Powersports

Box Quantity: 1

Weight: 1 lbs

Height: 4.75 Inches

Width: 4.75 Inches

Length: 8.63 Inches

CARB Status: Yes

These big bore pistons work with the stock 4" stroke flywheels to convert any 1999-'06 HD® big twin engine from 88" to 97" displacement with 9.7:1 compression with stock heads. Stock cylinders may be bored to accomodate 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 pistons are machined to such close tolerances that it is not necessary to measure the piston. Just bore cylinders to nominal diameter +/- 0.0005" for correct clearance. Additionally, the low friction coating on the piston skirt makes taking measurements very difficult. 3.927" +.010" bore.