S&S Cycle

These high compression pistons for 2007-'17 HD® CVO 110 models except 2017 and Twin Cooled® touring models feature a 12.5cc raised dome to achieve a compression ratio of 10.6:1. Higher compression is...

This 106" big bore Hot Set Up Kit® is easy to install. No machining or rebalanceing is required, and the engine does not need to be removed from the chassis. This kit includes S&S 3.927" bore...

The S&S Stock Bore Stroker Kit is an economical way to increase the displacement of your engine without any special machining other than fitting the pistons.

3-7/8" Bore For 103" Engines. S&S® 3-7/8" pistons for 103" kits are machined to such close tolerances that it is not necessary to measure the piston. Additionally, the low friction coating on the...

3-7/8" Bore For 103" Engines. S&S® 3-7/8" pistons for 103" kits are machined to such close tolerances that it is not necessary to measure the piston. Additionally, the low friction coating on the...

3-7/8" Bore For 103" Engines. Pistons for 103" kits are machined to such close tolerances that it is not necessary to measure the piston. Additionally, the low friction coating on the piston skirt...

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 106" displacement with 10:1 compression with stock heads. Stock...

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...

S&S Cycle 2007+ BT 34 Tooth Inner Cam Gear

S&S Cycle 2007+ BT 4-1/8in .020in Front Pistons

This 4-1/8" bore wrinkle black cylinder set has a stock bolt pattern and is 4.878" in length. It is for 117" and 117" Dish Hot Set Up® Kits for 2007-'16 big twins.

Fits: 1984-'16 HD® big twins 4 1/8 bore. 124" & 117" Stock or S&S® heads. Piston kits include set of pistons, rings, wristpins, and clips.