S&S Cycle 2007+ BT 4-1/8in Piston Set - .010in - 106-3872A

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

S&S Cycle 2007+ BT 4-1/8in Stroke Flywheel Assembly w/o Sprocket Shaft Bearing Race - 320-0407

This 4-1/8" stroke 8-1/2" diameter flywheel assembly is a replacement for the flywheels in S&S T111 engines for 2007-'16 big twin models. It also fits 2007-'16 HD® big twin engines, when not using...

S&S Cycle 2007+ BT 4-3/8in Bore Alternator Crankcase Assembly - Silver - 310-0370B

S&S Cycle 2007+ BT 4-3/8in Bore Alternator Crankcase Assembly - Silver

S&S Cycle 2007+ BT 4-3/8in Stroke Flywheel Assembly w/ Sprocket Shaft Bearing Race - 320-0350

This 4-3/8" stroke 8-1/2" diameter flywheel assembly replaces the original flywheels 2007-'16 HD® big twin engines, when using high performance pistons that allow the use of connecting rods with full...

S&S Cycle 2007+ BT 4-3/8in Stroke Flywheel Assembly w/o Sprocket Shaft Bearing Race - 320-0351

This 4-3/8" stroke 8-1/2" diameter flywheel assembly replaces the original flywheels 2007-'16 HD® big twin engines, when using high performance pistons that allow the use of connecting rods with full...

S&S Cycle 2007+ BT 4-3/8in Stroke Flywheel Assembly w/o Sprocket Shaft Bearing Race - 320-0353

This 4-3/8" stroke 8-1/2" diameter flywheel assembly replaces the original flywheels 2007-'16 HD® big twin engines, when using stock pistons. Wrist pin end of connecting rods is tapered like stock...

S&S Cycle 2007+ BT 4-3/8in Style Front Tappet Cover - 330-0279

S&S Cycle 2007+ BT 4-3/8in Style Front Tappet Cover

S&S Cycle 2007+ BT 4-3/8in Style Rear Tappet Cover - 330-0280

S&S Cycle 2007+ BT 4-3/8in Style Rear Tappet Cover

S&S Cycle 2007+ BT 4-5/8in Stroke Flywheel Assembly w/o Sprocket Shaft Bearing Race - 320-0464

This 4-5/8" stroke 8-1/2" diameter flywheel assembly replaces the original flywheels in S&S® T124 T2 engines, and fits 2006 HD® Dyna models and all 2007-'16 big twin models as part of an S&S® 124"...

S&S Cycle 2007+ BT 4.250in Bore 4.840in - Wrinkle Black w/o Highlight - 910-0763

S&S has been building big bore kits since the 60s and has it down to an absolute science. Our latest efforts are aimed at the Milwaukee Eight® platform (2017 and newer big twins) and open up a whole...

S&S Cycle 2007+ BT 4.250in Bore 4.840in - Wrinkle Black w/o Highlight - 910-0763A

S&S Cycle 2007+ BT 4.250in Bore 4.840in - Wrinkle Black w/o Highlight

S&S Cycle 2007+ BT 4.425in Bore Piston Ring Set - .020in - 1 Pack - 940-0036

S&S Cycle 2007+ BT 4.425in Bore Piston Ring Set - .020in - 1 Pack