Crankcase & Bottom End

This 4-3/8" stroke 8-1/2" diameter flywheel assembly replaces the original flywheels in 2003-'06 HD® internally balanced big twin engines, increas...

S&S® 4-3/8" Stroke Flywheel Assembly W/Sprocket Shaft Bearing Race For 2003-'06 Non-Balanced HD® Big Twins (Except 2006 Dyna Models) Replaceme...

This 4-5/8" stroke 8-1/2" diameter flywheel assembly fits 2000-'06 internally balanced HD® big twin models as part of an S&S® 124" Hot Set Up K...

This 4-5/8" stroke 8-1/2" diameter flywheel assembly replaces the original flywheels in S&S® 124" V124 engines for 1984-99 HD® big twins. Flywh...

The flywheels are the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, a...

The flywheels are the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, a...

The flywheels are the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, a...

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...

S&S® 4-3/8" Stroke Flywheel Assembly W/O Sprocket Shaft Bearing Race For 2007-'16 Internally Balanced HD® Big Twins - Stock Pistons S&S 3-...

S&S® 4" Stroke Flywheel Assembly W/O Sprocket Shaft Bearing Race For 1999-'06 Non-Balanced HD® Big Twins (Except 2006 Dyna Models) S&S 3-p...

This 4" (stock) stroke 8-1/2" diameter flywheel assembly replaces the original flywheels in 2000-'06 HD® internally balanced big twin engines. Spro...

S&S® 4" Stroke Flywheel Assembly W/Sprocket Shaft Bearing Race For 2003-'06 Non-Balanced HD® Big Twins (Except 2006 Dyna Models) S&S 3-pie...

S&S® 4" Stroke Flywheel Assembly W/Sprocket Shaft Bearing Race For 2003-'06 Internally Balanced HD® Big Twins (Except 2006 Dyna Models) S&...

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...

S&S® 4-3/8" Stroke Flywheel Assembly W/O Sprocket Shaft Bearing Race For 1999-'06 Non-balanced HD® Big Twins (Except 2006 Dyna Models) S&S...

S&S® 4-3/8" Stroke Flywheel Assembly W/Sprocket Shaft Bearing Race For 2007-'16 Internally Balanced HD® Big Twins - Stock Pistons S&S 3-pi...

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 pis...

The flywheels are the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, a...

The flywheels are the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, a...

Crankshaft bearing race kit for M-Eight and TC B model engines. Kit includes right and left side crankshaft races with the left side thrust washers...

Crankshaft bearing race kit for A model engines. Kit includes right and left side crankshaft races with the left side thrust washers. These Feuling...

Crankshaft bearing race kit for M-Eight and TC B model engines. Pinion race is undersized to allow service and re machining of pinion shaft when pr...