S&S

The factory oil control valve on all oil cooled M8 engines regulates the amount of oil flowing to the oil cooler/heads. The stock assembly includes...

The 100" Power Package is the ideal combination of performance and savings to transform your Twin Cam HD without breaking the bank. Bump the early...

The 100" Power Package is the ideal combination of performance and savings to transform your Twin Cam HD without breaking the bank. Bump the early...

The 110" Power Package is the ideal combination of performance and savings to transform your Twin Cam HD without breaking the bank. Bump the early...

The 110" Power Package is the ideal combination of performance and savings to transform your Twin Cam HD without breaking the bank. Bump the early...

Big Bore Kit: 107" to 124" Big Bore Kit Winkle Black Finish with Fin Highlighting Bolt-on kit. No case machining required 4.250" bore Forged Pis...

  Big Bore Kit: 107" to 124" Big Bore Kit Winkle Black Finish with Fin Highlighting Bolt-on kit. No case machining required 4.250" bore Forged Pis...

Big Bore Kit: 107" to 124" Big Bore Kit Winkle Black Finish with Fin Highlighting Bolt-on kit. No case machining required 4.250" bore Forged Pist...

Big Bore Kit: 107" to 124" Big Bore Kit Winkle Black Finish with Fin Highlighting Bolt-on kit. No case machining required 4.250" bore Forged Pist...

  Big Bore Kit: 114" to 128" Big Bore Kit Winkle Black Finish with Fin Highlighting Bolt-on kit. No case machining required 4.250" bore Forged Pis...

Big Bore Kit: 114" to 128" Big Bore Kit Winkle Black Finish with Fin Highlighting Bolt-on kit. No case machining required 4.250" bore Forged Pist...

Big Bore Kit: 114" to 128" Big Bore Kit Winkle Black Finish with Fin Highlighting Bolt-on kit. No case machining required 4.250" bore Forged Pist...

Big Bore Kit: 114" to 128" Big Bore Kit Winkle Black Finish with Fin Highlighting Bolt-on kit. No case machining required 4.250" bore Forged Pist...

107" to 129" Big Bore Kit: Available With or Without Fin Highlighting Bolt-On Kit — No Case Machining Required 4.320" Bore Forged Pistons 11.1...

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®...

114/117" to 132" Big Bore Kit: Wrinkle Black or Black Granite Finish Available With or Without Fin Highlighting for Wrinkle Black Bolt-On Ki...

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® ...

Race only 136" engine specs: Cylinder Heads High-flow cylinder heads with premium seats, guides, valves, springs, and seals +1mm oversized intake...

S&S 350G GEAR DRIVE CAMSHAFT KIT- '17+ M8 Models Bolt-in! Compatible with all stock valve train components 350G gear drive cam has stock specs...

S&S 465C CHAIN DRIVE CAMSHAFT KIT- '17+ M8 Models Excellent low to mid range cam! Good choice for two-up riding or touring where low end grunt ...

S&S 465G GEAR DRIVE CAMSHAFT KIT- '17+ M8 Models Excellent low to mid range cam! Good choice for two-up riding or touring where low end grunt i...

S&S 475C CHAIN DRIVE CAMSHAFT KIT- '17+ M8 Models Excellent all around power and torque cam! Good application for riders looking to increase po...

S&S 475G GEAR DRIVE CAMSHAFT KIT- '17+ M8 Models Excellent all around power and torque cam! Good application for riders looking to increase pow...

S&S 350G GEAR DRIVE CAMSHAFT KIT- '17+ M8 Models High lift cam for maximizing peak torque and horsepower! Designed to make higher RPM power in ...

S&S 550G GEAR DRIVE CAMSHAFT KIT- '17+ M8 Models High lift cam for maximizing peak torque and horsepower! Designed to make higher RPM power in ...

S&S 55MM PERFORMANCE MANIFOLD FOR M8 Engines are all about the flow, more air in and more air out, anything that slows that down, robs horsepow...

S&S 590C CHAIN DRIVE CAMSHAFT KIT- '17+ M8 Models The 590C cam was designed as an all out Horsepower Cam for 124 and larger engines. Big lift l...

S&S 590G GEAR DRIVE CAMSHAFT KIT- '17+ M8 Models The 590G cam was designed as an all out Horsepower Cam for 124 and larger engines. Big lift le...

S&S Cycle - PROVEN Performance High-flow filter designed especially for S&S intakes Cleanable elements for multi-service use Hi-Flow filte...

Introducing the next evolution in performance for your primary drive: the S&S Cycle Heavy Duty Compensator Ramp for Harley-Davidson® M8 models!...

The crew here at S&S Cycle have been working on our new Billet Head Breathers, crafted from premium 6061 aluminum and anodized in the iconic S&...

S&S CAM CHAIN TENSIONERS (M8 & TWIN CAM) Thicker shoe for longer wear Direct chain oiling Larger piston Tighter tolerance for improved sta...

S&S CAM PLATE M8 Precision Machined from Billet Aluminum Blue Anodized Finish Passage Plugs are removeable for Servicing Made in USA Fitment ...

The proven performance of an S&S cam chest kit without thecams, allowing you freedom of choice in cam profiles Kit oil pump and cam plate are ...

S&S CHAIN DRIVE 465C CAM CHEST KIT 17'-LATER M8 MODELS- BLACK, OIL COOLED Excellent low to mid range cam! Good choice for two-up riding or tour...

S&S CHAIN DRIVE 465C CAM CHEST KIT 17'-LATER M8 MODELS- BLACK, WATER COOLED Excellent low to mid range cam! Good choice for two-up riding or to...

S&S CHAIN DRIVE 475C CAM CHEST KIT 17'-LATER M8 MODELS- BLACK, OIL COOLED Excellent all around power and torque cam! Good application for rider...

S&S CHAIN DRIVE 475C CAM CHEST KIT 17'-LATER M8 MODELS- BLACK, WATER COOLED Excellent all around power and torque cam! Good application for rid...

S&S CHAIN DRIVE 475C CAM CHEST KIT 17'-LATER M8 MODELS- CHROME, OIL COOLED Excellent all around power and torque cam! Good application for ride...

S&S CHAIN DRIVE 475C CAM CHEST KIT 17'-LATER M8 MODELS- CHROME, WATER COOLED Excellent all around power and torque cam! Good application for ri...

S&S CHAIN DRIVE 550C CAM CHEST KIT 17'-LATER M8 MODELS- CHROME, OIL COOLED High lift cam for maximizing peak torque and horsepower! Designed to...

S&S CHAIN DRIVE 550C CAM CHEST KIT 17'-LATER M8 MODELS- CHROME, WATER COOLED High lift cam for maximizing peak torque and horsepower! Designed ...

S&S Cycle has upped our intake game with a new M8 manifold and leveraged a 5-Axis CNC machining center for the ultimate in consistent shape and...

Required install kit for '07-'16 Touring models using a T-series engine or Super Stock engine cases Includes formed oil line adapter, oil lines, f...

S&S CV (SPIGOT) STYLE MANIFOLDS For use with spigot style carburetors 40mm-48mm (Harley CV, Mikuni HSR, etc.) For use with stock or S&S he...

Allows the installation of T124 Engines in Dyna models due to the engines having external oil lines straight forward and attractive. Allows the in...

S&S GEAR DRIVE 465G CAM CHEST KIT 17'-LATER M8 MODELS- BLACK, OIL COOLED Excellent low to mid range cam! Good choice for two-up riding or touri...

S&S GEAR DRIVE 465G CAM CHEST KIT 17'-LATER M8 MODELS- BLACK, WATER COOLED Excellent low to mid range cam! Good choice for two-up riding or tou...