Solves the problem of oil carryover in Twin Cam "A" motors with stock oil pump Oil carryover is oil that comes out of your breather and all over your bike Easy-to-install when changing...

Flywheels are CNC machined from heat-treated, closed die, steel forgings, and are stronger than cast iron or late style steel flywheels Dynamically balanced and fully assembled with premium quaility...

Replacement ring sets for S&S pistons only Rings come as sets for two pistons Made in the U.S.A. Compatible Vehicles Years Make Make Notes 1999-2000 Harley-Davidson Dyna Convertible...

Super E has a 1-7/8" throat at the butterfly and a 1-9/16" venturi and is recommended for use on Big Twin or Sportster engines up to 100-cubic-inch Not For Models With Vertical...

Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance Bolt-in kits do...

Machined from 6061 aluminum and clear anodized for durability and years of enjoyment Signature stealth cover ring

High port flow gives great performance now, and more later when additional upgrades are done Heads are fully assembled with springs and valves Compression ratios vary depending on cylinder heads...

Fit early-style S&S carburetors with short cable guides when using stock throttle assemblies 42" Snap-In Throttle/Idle Cable Smooth handlebar fitting 90° elbow angle Length given is the...

1984-1999 Harley Big Twins S&S heads are available to be used with stock-style flat-top pistons Kits are fully assembled, and include stainless steel valves and high-lift (.585")...

Super E has a 1-7/8" throat at the butterfly and a 1-9/16" venturi and is recommended for use on Big Twin or Sportster engines up to 100-cubic-inch Four fuel delivery ports - Better...

Super E has a 1-7/8" throat at the butterfly and a 1-9/16" venturi and is recommended for use on Big Twin or Sportster engines up to 100-cubic-inch Four fuel delivery ports - Better...