Transmission & Drivetrain

If your Harley Big Twin clutch release disc is warped and sketchy, this is a perfect replacement. Fits Knucklehead, Panhead, and Shovelhead drive t...

Clutch hub lining for 1941-1984 Big Twin OEM #37549-41  Complete with rivets.

Complete 3 stud clutch hub for Harley Big Twin motorcycles from 1936-1984. Include hub, liner, rollers/retainer, adjusting nuts and plate Fits Knu...

Complete 5 stud clutch hub for Harley Big Twin from 1936-1984.   Includes hub, liner, rollers/retainer, adjusting nuts, and plate Fits Knuckehe...

USA-made clutch hub stud nuts by Eastern Parts. * For Big Twin from 1941 to early 1984. OEM # 37581-47 Sold in packs of three Made in the USA

Fits Harley Big Twin clutch hubs from 1936-early 1984. High-quality steel construction Sold individually Made in the U.S.A.

Heavy duty replacement throw out bearing kit for Harley 4-speed transmissions. Contains parts required to update clutch pushrod thrust bearing Inc...

Top quality gaskets, seals and O-rings meet or exceed OEM specifications includes gaskets and seals associated with the primary. Primary gas...

Top quality gaskets, seals and O-rings meet or exceed OEM specifications for primary cover and associated gaskets for Harley Big Twins from 1980-19...

Top quality primary gaskets, and O-rings meet or exceed OEM specifications for FL, FLH, FX, FXE, FXWG and Softail models. No seals included. Prima...

Top quality primary gaskets and O-rings meet or exceed OEM specifications. Foamet gaskets, no seals included.  Fits Harley FL,FLH, FX, FXE, FXWG pr...

Top quality primary gaskets, seals and O-rings meet or exceed OEM specifications for Harley FL, FLH, FXE, FX FXWG and Softail models. Primary gask...

Top quality primary gaskets, seals and O-rings for FXWG and Softail with Foamet. Primary gasket features silicone beading Made in the U.S.A. ...

James Gaskets 5-speed Harley Big Twin transmission gasket and seal kit.  Replaces OEM # 33031-85 Made in the U.S.A. YE...

Harley Big Twin 4-Speed transmission complete gasket and seal kit. Replaces Harley OEM # 33031-36 Made in the U.S.A. YEAR MAKE MODEL 1979 -...

Transmission seal and gasket kit for 1936-1979 4-Speed FL/FH models with double lip main seal. Made in the U.S.A. YEAR MAK...

Rear chain sprocket for Harley Davidson with 1.9" center bore and .46" offset. Used to convert your late model Harley from belt drive to 530 pitch ...

Rear sprocket used to convert late model Harley Davidson from belt drive to chain drive. Features center bore of 2.22" and no offset. Fits standard...

Rear chain sprocket for Harley Davidson with 2.22" center bore and dished with .23" offset.  Used to convert your late model Harley from belt drive...

Tin inner primary cover will allow you to mount a vintage Big Twin style primary cover to your alternator Shovelhead engine.  This is a custom prod...

This filler plug is designed to work on most four-speed kicker covers. The design is inspired by the needle screws on a Linkert carburetor. Pairs n...

This transmission sprocket conversion kit is used to convert belt drive XL Sportster models to chain drive.  The kit includes a 23 tooth front spr...

Belts are for pants! This kit converts your evolution Harley Sportster from a belt drive to chain drive.  Why? Because chains are just freaking coo...

Harley Davidson countershaft sprocket for 4-speed transmissions used on Harley Knuckleheads, Panheads and Shovelheads.  Constructed from machined h...

Replace your old motorcycles dirty chain primary with a clean maintenance free primary belt from Belt Drives LTD. These belt drive primaries are ma...

Heavy Duty Chain - 530x120 - Natural Hardened and shot peened components Solid rollers, pre-stretched All chains supplied with clip style master l...

Heavy Duty Chain - 530x120 - Gold Hardened and shot peened components Solid rollers, pre-stretched All chains supplied with clip style master links

This Bracket supports the transmission main shaft when the inner primary was discarded for an open belt on Harley Big Twin motorcycles using a 4 sp...

Kicker Shaft Bushing Kit - L37-86 Includes o-ring and bushings Made in the U.S.A. Replaces OEM # 33288-37 & 11101 Fits L1937-1986 4 speed tran...

Chrome Skeleton / Waffle style kicker pedal for Harley Davidson applications. Die cast construction Hardened kicker shaft Chrome Plated

Harley Foldable Kicker Arm - 77-84 Big Twin 4 Speed - Round Pedal Folding Style Kick arm with attached kicker pedal.  Simply fold the entire unit o...

Harley Foldable Kicker Arm - 77-84 Big Twin 4 Speed - Flat Pedal Folding Style Kick arm with attached kicker pedal.  Simply fold the entire unit ou...

This extended length belt is the perfect size for use with the Throttle Addiction Hardtail Sportster kit.  Our Hardtail kit extends your bike by 2 ...

James Gaskets' Super Nut improves the sealing ability on Harley Big Twin 4 speed transmission shafts found on Knucklehead, Panhead and Shovelhead m...

Tin inner primary cover will allow you to mount a vintage Big Twin style primary cover to your alternator Shovelhead engine.  This is a custom prod...

Drag Specialties Transmission Mounting Plate - 1986-1999 - Chrome Chrome transmission mounting plate for 5-speeds   Fitments YEAR MAKE MODEL ...

Paughco Transmission Mounting Plate - OE Type 4-Speed - 1936-1985 - Chrome Will accommodate most Big Twins with four-speed transmissions from stoc...

Paughco Transmission Mounting Plate - 5/4 Speed Conversion - Chrome Heavy-duty construction Will accommodate most Big Twins with four-speed transm...

This USA Made Harley Big Twin transmission mounting plate is made by Paughco. Single piece stamped construction and chrome plated to resist corrosi...

Drag Specialties Outer Primary Cover - 1998-2006 Softail - Chrome Rugged, die-cast aluminum construction Starter shaft bushings included;...

Drag Specialties Outer Primary Cover - 1995-1998 Softail - Chrome Rugged, die-cast aluminum construction Starter shaft bushings included;...

Drag Specialties Outer Primary Cover - 1989-1993 Softail - Chrome Rugged, die-cast aluminum construction Starter shaft bushings included;...

Drag Specialties Outer Primary Cover - 1999-2006 Softail - Black Rugged, die-cast aluminum construction Starter shaft bushings included; ...

Drag Specialties Outer Primary Cover - 1995-1998 Softail - Black Rugged, die-cast aluminum construction Starter shaft bushings included; ...

Drag Specialties Outer Primary Cover - 1989-1993 Softail - Black Rugged, die-cast aluminum construction Starter shaft bushings included; ...

Replacement Black Harley Shovelhead Outer primary cover. Aluminum construction with Satin Black powder coat finish. Hardware and bushing not includ...

Drag Specialties Outer Primary Cover - 1970-1984 FL - Chrome Die-cast outer primary covers Standard eight-hole application Hardware an...

Belt Drives LTD. Solid Primary Sprocket Kit - 1999-2006 Eliminates the need for a complete compensator assembly Includes 25-tooth sprocke...