S&S Standard Pistons with 10.4:1 compression. Fits Twin Cam 2007-2017 96ci or 103ci to 107ci Big Bore Conversion.

Description

Features & Benefits:-

* 3.937in. Bore.

* 4-3/8in. Stroke.

* Pistons are compatible with stock conrods with tapered wristpin ends.

* S&S bore pistons are machined to such close tolerances that it is not necessary to measure the piston.

* Just bore cylinders to nominal diameter +/- 0.0005in. for correct clearance.

* Additionally, the low friction coating on the piston skirt makes taking measurements very difficult.

* 10.4:1 Compression Ratio with Stock He