Engine

Extend the life of your cylinder heads in your M8. Fits: 2017-2020 Harley M8 Models Extends the life of your cylinder heads Helps prevent damage to the rocker arm towers Re-torque rocker arm nuts after installation 12-point nuts Black oxide...

The 592 Reaper Cam from Feuling for the Harley M8 motor. Requires high-lift valve springs. Fits: 2017-2020 Harley M8 Models Produce more power and torque in the riding rpm range, improving throttle response, acceleration and fuel mileage Smooth...

Get an internal view of your camchest with the Trask Assault series cam cover. Raw finish. Fits: 2017-2020 Harley M8 Models Transparent for viewing internal engine components Matches Assault series air cleaners Made in the U.S.A...

Upgrade the breather in your Evo with some modern technology. Fits: 1993-1999 Evolution Big Twin Style Engine New-style breather is not dependent on the rotation of the crankshaft to make it open and close. Instead, reeds open when pressure in the...

Turn your stock 117" into a monster of a 128". For Oil Cooled Milwaukee Eight models Only. Black Granite with highlighted fins and chrome pushrod tubes. Gear Drive. Fits: Harley M8 Models (Oil Cooled) Big Bore Kit: 117" to 128" Big Bore Kit Black...

Turn your stock 117" into a monster of a 128". For Oil Cooled Milwaukee Eight models Only. Black Grant with highlighted fins and chrome pushrod tubes. Chain Drive. Fits: Harley M8 Models (Oil Cooled) Big Bore Kit: 117" to 128" Big Bore Kit Black...

Turn your stock 117" into a monster of a 128". For Water Cooled Milwaukee Eight models Only. Black Granite with highlighted fins and chrome pushrod tubes. Gear Drive. Fits: Harley M8 Models (Water Cooled) Big Bore Kit: 117" to 128" Big Bore...

Turn your stock 117" into a monster of a 128". For Water Cooled Milwaukee Eight models Only. Black Granite with highlighted fins and chrome pushrod tubes. Chain Drive. Fits: Harley M8 Models (Water Cooled) Big Bore Kit: 117" to 128" Big Bore...

Turn your stock 114" into a monster of a 128". For Water Cooled Milwaukee Eight models Only. Wrinkle Black with non-highlighted fins and chrome pushrod tubes. Gear Drive. Fits: Harley M8 Models (Oil Cooled) Big Bore Kit: 114" to 128" Big Bore...

Turn your stock 114" into a monster of a 128". For Water Cooled Milwaukee Eight models Only. Wrinkle Black with non-highlighted fins and chrome pushrod tubes. Chain Drive. Fits: Harley M8 Models (Oil Cooled) Big Bore Kit: 114" to 128" Big Bore...

Turn your stock 114" into a monster of a 128". For Water Cooled Milwaukee Eight models Only. Highlighted fins with chrome pushrod tubes. Gear Drive. Fits: Harley M8 Models (Oil Cooled) Big Bore Kit: 114" to 128" Big Bore Kit Wrinkle Black...

Turn your stock 114" into a monster of a 128". For Water Cooled Milwaukee Eight models Only. Highlighted fins with chrome pushrod tubes. Chain Drive. Fits: Harley M8 Models (Oil Cooled) Big Bore Kit: 114" to 128" Big Bore Kit Wrinkle Black...

Turn your stock 114" into a monster of a 128". For Water Cooled Milwaukee Eight models Only. Highlighted fins with chrome pushrod tubes. Gear Drive. Fits: Harley M8 Models (Water Cooled) Big Bore Kit: 114" to 128" Big Bore Kit Wrinkle Black...

Turn your stock 114" into a monster of a 128". For Water Cooled Milwaukee Eight models Only. Highlighted fins with chrome pushrod tubes. Chain Drive. Fits: Harley M8 Models (Water Cooled) Big Bore Kit: 114" to 128" Big Bore Kit Wrinkle Black...

James Inner Primary cover to engine case gasket. Fits: 06-17 FLT, 07-17 Softail, Dyna Primary Cover to Engine - Repl. OEM #34934-06 Made in the U.S.A. Fitment YearMakeModel 2011 - 2013 Harley-Davidson Blackline FXS 2013 -...

Drag Specialties Inner Primary Mainshaft Bearing. Fits: 1985-2006 Harley Big Twin - Repl. OEM #9135/60678-85 Kit includes sealed ball bearing, seal and snap ring Designed for use on straight splined shafts only Designed for stock style clutches...

Drag Specialties Inner Primary Mainshaft Bearing/Seat Kit. Fits: 1991-2006 Harley Big Twin Kit includes sealed ball bearing, seal and snap ring Designed for use on straight splined shafts only Designed for stock style clutches only Includes OE #s...

Drag Specialties Inner Primary BEaring. Fits: 07 Softail, 06-07 Dyna and 07 FLHT models - Repl. OEM #9231 Fits most OEM and most aftermarket inner primaries Fitment YearMakeModel 2007 Harley-Davidson Electra Glide Classic EFI...

Drag Specialties Inner Race. Fits: 07 Softail, 06-07 Dyna and 07 FLHT models - Repl. OEM #34091-06 Fits most OEM and most aftermarket inner primaries Fitment YearMakeModel 2007 Harley-Davidson Electra Glide Classic EFI...

Drag Specialties Inner Primary Mainshaft Bearing/Seat Kit. Fits: 1989-2006 Harley Big Twin (Except 06 Dyna Glide) Includes pinion seal, main shaft seal, bearing snap rings, inner bearing race and bearing Fits OEM and most aftermarket inner...

Drag Specialties Inner Primary Mainshaft Bearing/Seat Kit. Fits: 2008-2019 Harley Big Twin Includes main shaft seal, bearing snap rings, inner bearing race and bearing Fits OEM and most aftermarket inner primaries PART #1120-0281 includes OE #s...

James Inner Primary Lock-Tabs for Harley models. 10-Pack Fits: 1999-2006 Harley Twin Cam and 1987-1999 Evolution Big Twin Lock-tabs designed for use on inner primary bolts 10-Pack Made in the U.S.A...

High Torque Bearing and Seal Kit from Baker Drivetrain. Fits: 1985-1999 Evolution Big Twin and 1999-2006 Twin Cam (Except 06 Dyna) - Repl. OEM #34091-85 inner race, 9135 bearing and 12052 seal Replaces the two-piece bearing and seal in the inner...

James Inner Primary Bearing Seal for Harley models. This is for Qty 1 seal. Fits: 1999-2017 Harley Twin Cam Made in the U.S.A. Sold individually Fitment YearMakeModel 2005 Harley-Davidson 15th Anniversary Fat Boy FLSTF 2011 -...

Replica oil deflector is for a 3-brush generator. FITS:EL 1936-1940FL 1941-1957VL 1930-1934UL 1937-1948

Stock lower pushrod cover kit features a parkerized finish and comes with rubber seals.Sold as a set of 4. FITS:FL 1940-1947

Stock lower pushrod cover kIT features a cadmium plated finish and comes with rubber seals.Sold as a set of 4. FITS:FL 1940-1947

1936 Knucklehead bare cylinder head set features exact casting marks and details for 1936 61" Knucklehead models.*NOTE: Accepts cup valve cover, primer caps and large 18mm air cooled spark plugs, all items available separately. FITS:EL 1936-1936

Scavenger oil pump cover features cast iron construction.This is the outer cover only, without internals. Order hardware separately. *NOTE: Features the chain oiler provision. FITS:W 1941-1952G 1941-1973UL 1945-1945

Feuling Race Series Camchest kit with the 508 Reaper Cam for Twin-Cooled M8 engines. Fits: 2017-2020 Harley M8 Twin-Cooled Motors Feuling®​ complete camchest kits include all necessary components from top to bottom of the camchest conveniently...

Feuling Race Series Camchest kit with the 508 Reaper Cam for Oil-Cooled M8 engines. Fits: 2017-2020 Harley M8 Oil-Cooled Motors Feuling®​ complete camchest kits include all necessary components from top to bottom of the camchest conveniently...

The 508 Reaper Cam from Feuling for the Harley M8 motor. Requires high-lift valve springs. Fits: 2017-2020 Harley M8 Models Produce more power and torque in the riding rpm range, improving throttle response, acceleration and fuel mileage Smooth...

Race Series Solid Lifters for your Harley from Feuling. Fits: 17-19 M-Eight, 99-17 Twin Cam, 00-19 Sportster XL/ZR 1200 and 00-09 Buell Designed for engines with radical valve spring pressures and large lift camshafts; maintain proper and critical...

HP+ Hydraulic Lifters for your Harley from Feuling. Fits: 17-19 M-Eight, 99-17 Twin Cam, 00-19 Sportster XL/ZR 1200 and 00-09 Buell Performance hydraulic roller lifters dyno developed and track tested CNC-machined and precision ground When used...

See through the cam cover and into the bike's beating heart. Contrast Cut finish. Fits: 2017-2019 M-Eight Models Allows for viewing of the internal moving engine components CNC-machined from billet aluminum Hardware included Available with chrome,...

Stronger than stock and required for engine upgrades, these M8 head bolts from S&S provide the strength you need. Be worry free about snapping the bolts. Fits: 2017-2020 Harley M8 Models Made from heat-treated 8640 steel 200,000 psi ultimate...

Twin Power's Top Stabilizer Link allows precise powertrain alignment, perfect for high-performance use. Black finish. Fits: 1992-2003 Harley Dyna Models Black finish Fitment YearMakeModel 1995 - 2000 Harley-Davidson Dyna...

Twin Power's Top Stabilizer Link allows precise powertrain alignment, perfect for high-performance use. Chrome finish. Fits: 1992-2003 Harley Dyna Models Chrome finish Fitment YearMakeModel 1995 - 2000 Harley-Davidson Dyna...

+0.030" Longer than stock One-piece pushrods for Harley Twin Cam motors. Fits: 1999-2017 Harley Twin Cam models Fixed length, 4130 chromoly one-piece pushrods with swedged formed ends Heavy-duty 7/16​​" diameter tube with a wall thickness of 0...

Stock Length One-piece pushrods for Harley Twin Cam motors. Fits: 1999-2017 Harley Twin Cam models Fixed length, 4130 chromoly one-piece pushrods with swedged formed ends Heavy-duty 7/16​​" diameter tube with a wall thickness of 0.165" Heat-treated...