Engine

Turn your stock 114/117" into a monster with S&S 132" Big Bore Power Package for Harley M8 motors. Kit is designed to fit Chain Drive / Oil Cooled Milwaukee Eight models Only. This is S&S's largest big bore cylinders (4.32") with matched cam/cam...

Turn your stock 114/117" into a monster with S&S 132" Big Bore Power Package for Harley M8 motors. Kit is designed to fit Gear Drive / Oil Cooled Milwaukee Eight models Only. This is S&S's largest big bore cylinders (4.32") with matched cam/cam...

Turn your stock 114/117" into a monster with S&S 132" Big Bore Power Package for Harley M8 motors. Kit is designed to fit Chain Drive / Water Cooled Milwaukee Eight models Only. This is S&S's largest big bore cylinders (4.32") with matched...

Turn your stock 114/117" into a monster with S&S 132" Big Bore Power Package for Harley M8 motors. Kit is designed to fit Gear Drive / Water Cooled Milwaukee Eight models Only. This is S&S's largest big bore cylinders (4.32") with matched cam/cam...

Turn your stock 107" into a monster of a 129" with S&S Power Package for Harley M8 motors. Kit is designed to fit Gear Drive / Oil Cooled Milwaukee Eight models Only. Choose Cylinder finish and pushrod tubes. Requires S&S Cycle Head Bolts for M8,...

NEW S&S Piston Cooling Jet kit is designed specifically for M8 engines. Milled from Billet Aluminum 6061-T6, this revised uniform dual jet design allows for more effective cooling. Includes all needed gaskets and hardware. Fits: Harley M8...

Feuling's new Short-travel revolutionary design with .115” of total travel vs. a full travel lifter with .200” will increase rpm by decreasing valve float and valve-train harmonics while maintaining a quiet engine. Made in the USA...

Turn your stock 107" into a monster of a 129" with S&S Power Package for Harley M8 motors. Kit is designed to fit Chain Drive / Oil Cooled Milwaukee Eight models Only. Choose Cylinder finish and pushrod tubes. Requires S&S Cycle Head Bolts for...

S&S  TC3 Oil Pump & Cam Support Plate Kit for Harley Twin Cam and 2006 Dynas. This kit is precision CNC machined forged aluminum to give increased structural strength and dimensional stability. Made in the USA Fits: 2007-17 Twin Cam and...

Cycle-Rama 512 Cam for Harley M8 models. Fits: 2017-2023 Harley M8 Models Drop-in cam for Harley’s 131ci. Great horsepower, massive mid-range torque.

Cycle-Rama CR480MT Cam for Harley M8 models. Fits: 2017-2023 Harley M8 Models Developed for Milwaukee-Eight engines Bolt-in design, utilizing stock springs Power between 2000-5000rpm Loads of Low Range Torque  

Cycle-Rama 540 Cam for Harley M8 models. Fits: 2017-2023 Harley M8 Models Developed for Milwaukee-Eight engines High output cam for big bore M8 engines with headwork, requires hi-lift stock springs Provide excellent low and mid-range performance...

Cycle-Rama 485 Cam for Harley M8 models. Fits: 2017-2023 Harley M8 Models Developed for Milwaukee-Eight engines Bolt-in design, utilizing stock springs Power range between 2,800 to 7000 Largest Allowable Lift With Stock Valve Springs Broad Power...

Cycle-Rama 470 Cam for Harley M8 models. Fits: 2017-2023 Harley M8 Models Developed for Milwaukee-Eight engines Bolt-in design, utilizing stock springs Great Power range between 2,800 to 5,800 Great torque in the mid range with good top end power...

Cycle-Rama 483 Cam for Harley M8 models. Fits: 2017-2023 Harley M8 Models Developed for Milwaukee-Eight engines Bolt-in design, utilizing stock springs Makes power 2000-5500rpm  

Andrews 485 Cam for Harley M8 models. Fits: 2017-2023 Harley M8 Models Bolt-in cam for stock valve springs   Fitment YearMakeModel 2017 - 2020 Harley-Davidson CVO Electra Glide Ultra Limited FLHTKSE 2018 -...

Cometic Derby Cover Gasket for 2007-2018 Harley and 2006 Dyna Glide Models. Replaces OEM#25416-99C Fits: 1999-2017 Harley Twin Cam Models Replacement Derby Cover OEM# 25416-99C Sold Individually Made in the U.S.A...

James Derby Cover Gasket for 2007-2018 Harley and 2006 Dyna Glide Models. Replaces OEM#25416-99X Fits: 2006 Dyna Glide and all 2007-18 applications (except 2016-18 Dressers, 15 FLHTCUL/​FLHTKL, 18 FLSB) Replacement Derby Cover OEM# 25416-99X Cover...

S&S Cam Install kit includes everything you need to service or change cams in your 2007-2017 Harley Twin Cam or 2006 Dyna. Fits: 2007-2017 Harley Twin Cam or 2006 Dyna Kits include all required parts needed when servicing or changing cams in your...

S&S Chain Tensioner designed to be used on stock 2007-17 Twin Cam engines or 99-06 Twin Cam engines with a hydraulic upgrade cam plate like the S&S TC3 bodies machined from 6061 aluminum. Larger diameter piston and tighter tolerance fit of the...

Brand New from HPI their JLR-478 cam. Made in a collaboration with T-Man. This is a bolt-in style cam for Harley M8 Models. Fits: 2017-2022 Harley M8 Models Developed for Milwaukee-Eight engines Bolt-in design, utilizing stock springs  

Feuling Oil Pump gear alignment tool allows you to align the oil pump gear flats with the flats of the crankshaft to give you the best best seal on the back scavenge port of the oil pump. Made in the USA Fits: 2017-2023 Harley M-Eight and 1999-2017 Twin...

The S&S T143 Long Block engine is the largest S&S engine that will fit in a stock Harley- Davidson® chassis. At double the HP of a stock motor the power of the T143 requires technical expertise for the installation and tuning along with an...

TTS 150-cam is designed to increase torque in the 1000-4000 RPM range. Developed for use with stock heads and pistons. Bolt-in design utilizes stock springs and pushrods. Not recommended for compression over 10.5:1. Fits: 2017-2022 Harley M8...

TTS 150-cam is designed to increase torque in the 2200-5200 RPM range. Developed for use with stock heads and pistons. Bolt-in design utilizes stock springs and pushrods. Not recommended for compression over 10.5:1. Fits: 2017-2022 Harley M8...

TTS 175-cam is designed to increase torque 2400-5800 RPM range. Developed for Milwaukee-Eight engines with stock heads and pistons. Bolt-in design, utilizing stock springs and pushrods. Not recommended for compression over 11.3:1. Fits: 2017-2022 Harley...

TTS 200-cam is designed to increase torque over a broad RPM range (1800-5500 RPM). Developed for Milwaukee-Eight engines with modified heads and pistons. Ideal for Stage III or IV kits. Not recommended for compression over 11:1. Requires use of high lift...

TTS 250-cam is designed to increase torque in the 2500-6000 RPM range. Developed for Milwaukee-Eight engines with modified heads and pistons. Ideal for Stage III or IV kits. Requires the use of high lift valve springs (such as TTS Performance Valve...

Stock replacement 17-tooth crankshaft cam drive sprocket. Machined steel, roller chain drive sprocket. Fits: 2017-2021 Harley Milwaukee Eight and 2007-2017 Twin Cam Engines 17-tooth Machined steel, stock replacement roller chain drive sprocket Repl...

Factory plastic OEM breathers can be problematic, we find the material easily distorts, especially after seeing excessive heat then the internal umbrella valve struggles to seal, causing oil carry over. FEULING Cylinder head breathers for M8 engines are...

If you're beefing up yourM8 motor with higher lift cams and heavier springs, than you want to include Feuling's Rocker Shaft Kit in your build. Stock replacement kit. These pieces are rated to give you 2x the strength of the factory rocker shafts. Fits:...

Trask Turbo Kit for Harley Davidson M8 Models. Bolt on big power. Fits: Harley M8 Motors Bolt on 40-50% more power on stock 107", 114" or 117" M8 motors. Trask Compressor and Turbine housings with Garrett internals Stainless Steel Pipe Kit that...

Why rebuild that old stock engine? Upgrade, and replace it with an all-new S&S® T111 engine. Get a 2-year warranty and a lot more power! S&S T111 engines are perfect for applications that require great horsepower and torque. The easy start...

Feuling Race Series Full-travel lifters for M8 models are made from machined steel designed with .200” of travel. These lifters will maintain proper and critical oil flow to valves, springs, rockers, shafts and valve guides. Sold a a set of fours...

128" Big Bore Kit for the 114" M8 Harley models. Black Granit with highlighted fins. For CVO models Fits: 2017-2023 117" M-Eight Motors Bolt-on kit, the largest cylinder bore possible without required machining of the crankcases 4.250" bore, 4.500"...

Upgrade your engine, but don't skimp on the bolts. Feuling ARP 12 Point Cam & Pinion Bolt kit will keep your engine secure. Stronger & Superior with a Tensile strength rated @ 17,000 psi. Fits: 2017-2020 Harley M8 Engines, 1999-2017 Twin Cam...

S&S Cam Install kit includes everything you need to service or change cams in your M8. Fits: 2017-2023 Harley M8 Engines Kits include all required parts needed when servicing or changing the cam in your motor Made in the U.S.A...

The biggest Big Bore slip on kit available, S&S 132" Big Bore Kit for the 114" M8 Harley models. Choose between Highlighted and Non-Highlighted cylinders. Fits: 2017-2022 M-Eight 114" Harley Models Bolt-on kit, the largest cylinder bore possible...

The biggest Big Bore slip on kit available, S&S 129" Big Bore Kit for the 107" M8 Harley models. Choose between Highlighted and Non-Highlighted cylinders. Fits: 2017-2022 M-Eight 107" Harley Models Bolt-on kit, the largest cylinder bore possible...

S&S Cycle 4-1/4" Bore Cylinder Head Gasket Kit for Harley M8 models. Sold as a kit. Made in the USA Fits: 2017-2021 Harley M-Eight Models with 4-1/4" bore For standard 41/4” bore .030” Micropore head gaskets .014” Micropore...