Cookies help us deliver our services. By using our services, you agree to our use of cookies.
Menu
- New Products Not In Catalog (0)
-
Control
(1519)
- Brake Cables (2)
- Brake Fluid (1)
- Brake Lever Pads (7)
- Brake Line Clamps (2)
- Brake Line Fittings (237)
- Brake Line Tees (12)
- Cable Clamps (16)
- Cable Related (16)
- Cables (5)
- Clutch Cables (54)
- Clutch Control Parts (15)
- Digital Gauges (31)
- Digital Speedometers (10)
- Electronic Speedometer Calibrator (2)
- Forward Control Parts (11)
- Forward Controls (43)
- Front Master Cylinder Related (26)
- Front Master Cylinders (1)
- Gauge Cluster Kits (3)
- Grips (52)
- Handlebar Control Related (10)
- Handlebar Controls (69)
- Handlebar Related (14)
- Handlebar Riser Related (28)
- Handlebar Risers (43)
- Handlebars (89)
- Instrument Panel Related (18)
- Instrument Panels (19)
- Lever Related (7)
- Levers (61)
- Mirrors (52)
- OE Fit Brake Lines (98)
- Rear Brake Parts (8)
- Rear Master Cylinder Related (18)
- Rear Master Cylinders (25)
- Shift Control Parts (32)
- Shift Kits (1)
- Shift Levers & Knobs (20)
- Shift Mounts (2)
- Shift Pegs (14)
- Speedo/Tach Brackets (13)
- Speedometer Cables (20)
- Speedometer Drive/Sensor Covers (1)
- Speedometer Drives (9)
- Speedometer Sensors (7)
- Speedometers (29)
- Speedometers with Tachometers (18)
- Switch Housing Hardware (3)
- Switch Housings (15)
- Tachometer Cables (1)
- Tachometers (10)
- Throttle Control Parts (22)
- Throttle/Idle Cables (259)
- Universal Brake Lines (239)
-
Drive Train
(1114)
- 10 Spring Clutch Related (44)
- 45ci Clutch Parts (2)
- Belt & Primary Drive Parts (19)
- Belt Drive Kits (81)
- Belt Drive Kits & Parts (9)
- Belt Drive Parts (70)
- Big Twin 4 & 5 Speed Parts (45)
- Big Twin 4 Speed Parts (121)
- Big Twin 5 & 6 Speed (2)
- Big Twin 5 & 6 Speed Parts (4)
- Big Twin 5 Speed (0)
- Big Twin 5 Speed Parts (101)
- Big Twin 6 Speed Parts (2)
- Big Twin Belt Guards (12)
- Big Twin Chain Guards (5)
- Big Twin Clutch Plates (19)
- Big Twin Clutches & Parts (49)
- Big Twin Transmission Pulleys (12)
- Clutch & Derby Covers (16)
- Clutch Assemblies (27)
- Clutch Assemblies & Related (29)
- Clutch Pushrods (17)
- Cover Plugs & Drive Chain Related (13)
- Inner Primary Cover Hardware (5)
- Kickstarter Parts (36)
- Offset Transmission Sprockets (7)
- Primary & Sprocket Covers (8)
- Primary Cover Hardware (21)
- Primary Cover Parts (59)
- Primary Cover Related (11)
- Primary Covers (17)
- Primary Covers & Parts (5)
- Primary Drive Kits & Sprockets (15)
- Primary Drive Parts (47)
- Rear Belts (67)
- Rear Chain (36)
- Rear Pulley Related (6)
- Rear Pulleys (3)
- Rear Sprockets (22)
- Sportster 4 Speed Parts (35)
- Sportster 5 Speed Parts (18)
- Sportster Chain Guards (0)
- Sportster Clutch Parts (22)
- Sportster Clutch Plates (15)
- Sportster Kickstart Parts (8)
- Sportster Shifter Parts (10)
- Sportster Transmission Pulleys (5)
- Sprocket & Pulley Hardware (13)
- Throw Out Kits & Primary Belts (19)
- Transmission Sprockets (24)
- Transmissions - Big Twin (0)
- Transmissions - Softail (6)
- Wide Tire Related (38)
-
Electrical
(1103)
- Alternator Charging Systems (12)
- Alternator Rotors (15)
- Alternator Stator Hardware (2)
- Alternator Stators (23)
- Batteries (13)
- Battery Cables (45)
- Battery Carrier Tray Mounts (6)
- Battery Chargers & Related (4)
- Battery Covers (5)
- Battery Cushions (3)
- Battery Eliminators (0)
- Battery Jumper Cables (2)
- Battery Related (3)
- Battery Straps (4)
- Battery Tray Related (0)
- Battery Trays (2)
- Brake Light Switches (10)
- Builders Kits (1)
- Cam Position Covers (1)
- Circuit Breaker Related (3)
- Circuit Breakers (5)
- Electrical Related (94)
- Electronic Advance Ignitions (7)
- Electronic Ignitions (13)
- Generator Parts (15)
- Generator Related (9)
- Generators (4)
- Handlebar Extension Kits (6)
- Handlebar Switch Housing Hardware (5)
- Handlebar Switch Housings (22)
- Handlebar Switches/Wiring Kits (53)
- Headlight Assemblies (19)
- Headlight Bulbs (4)
- Headlight Housing Components (9)
- Headlight Lens (4)
- Headlight Lens Grills (1)
- Headlight Mount Covers (1)
- Headlight Mounts (10)
- Headlights (7)
- Heat Shrink Tubing (15)
- Horn Related (2)
- Horns (2)
- Ignition Circuit Breakers (3)
- Ignition Coil Covers (7)
- Ignition Coil Mounts (3)
- Ignition Coils (37)
- Ignition Condensers (3)
- Ignition Diagnostic Tools (1)
- Ignition Modules (14)
- Ignition Points Sets (3)
- Ignition Related (6)
- Ignition Switch Housings (0)
- Ignition Switches & Voes (25)
- Ignition Timer Cover Hardware (4)
- Ignition Timer Covers (13)
- Ignition Tune-up Kits (1)
- Ignition/Fuel Module Kits (1)
- Led Accent Lighting (1)
- License Frame & Mount Hardware (14)
- License Plate Frames (12)
- License Plate Mounts (9)
- Light Bulbs (22)
- Marker Lights (39)
- Mechanical Advance Kits (10)
- Mechanical Advance Unit Parts (8)
- Regulator/Rectifier Mounts (4)
- Regulator/Rectifier Related (3)
- Regulator/Rectifiers (57)
- Regulators (25)
- Relays (13)
- Rotor & Stator Kits (2)
- Sound Systems (4)
- Spark Plug Related (4)
- Spark Plug Wires (98)
- Spark Plugs (10)
- Spotlight Assemblies (7)
- Spotlight Bulbs (1)
- Spotlight Lens (1)
- Spotlight Mounts (3)
- Spotlights (2)
- Starter Motor Related (2)
- Starter Motors (37)
- Starter Solenoid Related (11)
- Starter Solenoids (9)
- Taillight Lenses (7)
- Taillight/License Mounts (22)
- Taillights (47)
- Turn Signal Mounts (11)
- Turn Signal Related (11)
- Turn Signal Relocation Kits (2)
- Turn Signals (43)
- USB Chargers & Adapters (2)
- Wire Harness Kits (15)
-
Engine
(1465)
- Big Bore Cylinders & Kits (7)
- Breathers & Lower End Parts (10)
- Cam Gear Case Parts (29)
- Cam Side Parts (113)
- Cam Support Plates (7)
- Cams (105)
- Cylinder, Heads & Related (6)
- Cylinders & Related (15)
- Drain Plugs & Engine Tools (9)
- Engine Crankcases (3)
- Engine Hardware (12)
- Engines (1)
- Gasket & Seal Sets (26)
- Gasket Set & Starter Drive Parts (6)
- Gaskets (140)
- Gaskets & O Rings (43)
- Head & Cylinder Hardware (25)
- Head Gaskets (20)
- Heads (0)
- Lower End Parts (77)
- Oil Pump & Parts (14)
- Oil Pump Covers (1)
- Oil Pump Parts (38)
- Oil Pumps (17)
- Piston Parts & Rings (33)
- Pistons (249)
- Pushrod Covers (10)
- Pushrod Covers & Seals (24)
- Pushrod Parts (3)
- Pushrod Sets & Kits (19)
- Rings & Pushrod Cover Parts (39)
- Rocker Arm Cover Hardware (19)
- Rocker Arm Covers (11)
- Rocker Arms & Related (17)
- Starter Drive Parts (36)
- Tappet Assemblies (24)
- Tappet Block Hardware (8)
- Tappet Blocks & Covers (5)
- Tappet Conversion Kits (3)
- Tappet Parts (2)
- Timer Covers & Related (5)
- Top End (67)
- Top End Gasket Sets (26)
- Valve Guides & Valve Seals (141)
- Valve Related (7)
- Valve Spring Kits & Retainers (12)
- Valve Springs & Collars (18)
- Valves (48)
-
Exhaust
(140)
- Drag Pipes (16)
- Exhaust - 45ci (0)
- Exhaust - 5 Speed Shovelhead (0)
- Exhaust - Alternator Shovelhead (0)
- Exhaust - Dyna (0)
- Exhaust - Evolution Sportster (0)
- Exhaust - FLT Evolution (3)
- Exhaust - FX Evolution (0)
- Exhaust - FXR Evolution (0)
- Exhaust - Generator Shovelhead (0)
- Exhaust - Ironhead Sportster (0)
- Exhaust - Kraft Tech (0)
- Exhaust - Panhead (0)
- Exhaust - Softail (4)
- Exhaust - Touring Models (3)
- Exhaust Baffles (5)
- Exhaust Brackets (0)
- Exhaust Builder Related (1)
- Exhaust Clamps & Gaskets (10)
- Exhaust Clamps & Hardware (10)
- Exhaust Clamps & Straps (5)
- Exhaust Heat Shields (9)
- Exhaust System Related (32)
- Muffler Bracket Covers (1)
- OEM Fit Mufflers (1)
- Rush Exhaust (1)
- Slip-On Mufflers (32)
- Universal Mufflers & Extensions (4)
-
Frame
(721)
- Air Shock Pump (3)
- Backrests (8)
- Custom Use Seats/Pillion Pads (4)
- Engine Mount Hardware (6)
- Engine Mounts & Stabilizers (25)
- Fender & Tank Bibs (25)
- Fender Hardware (28)
- Fender Supports (22)
- Footboard Mounts (5)
- Footboard Related (2)
- Footboards (36)
- Footrest Mounts (22)
- Footrests (47)
- Frame Clamps (9)
- Frame Parts (12)
- Frames - Rigid (11)
- Frames - Softail (12)
- Frames - Swingarm (2)
- Frames - Touring (2)
- Front Fender Trim (14)
- Front Fenders (35)
- Highway Bars & Pegs (12)
- Kick Stand Parts (24)
- Kick Stands (25)
- Luggage Racks (11)
- Rear Fenders (31)
- Rear Fork Covers (0)
- Rear Fork Parts (30)
- Rear Forks (3)
- Rear Lowering Kits (15)
- Saddlebag Related (13)
- Saddlebag Supports (8)
- Seat Cushions (0)
- Seat Mounting Parts (36)
- Seats - Big Twin 4 Speed (12)
- Seats - Dyna (4)
- Seats - FLT (18)
- Seats - FXR (1)
- Seats - Rigid Frame (2)
- Seats - Softail (18)
- Seats - Sportster (12)
- Seats - Universal Mount (3)
- Shock Absorber Parts/Hardware (15)
- Shock Absorbers (57)
- Side Cover Rails (1)
- Sissy Bar Pads (8)
- Sissy Bars (1)
- Solo Seat Pans (2)
- Solo Seats (9)
- Tool Bags & Fairing Pouches (1)
- Tool Boxes (4)
- Tour Pack Related (11)
- Trailer Hitches & Related (1)
- Travel Bags & Saddlebags (4)
- Wind Deflectors (1)
- Windshields & Related (21)
-
Front End
(375)
- Custom Fork Leg Parts (11)
- Custom Fork Leg Sets (15)
- Custom Springer Parts (2)
- Custom Springers (33)
- Damper Related (3)
- Dust Boot Related (3)
- Dust Boots (3)
- Early Springer Parts (7)
- Fork Tube & Slider Kits (21)
- Front Fork Braces (6)
- Front Fork Brackets (14)
- Front Fork Covers & Housings (26)
- Front Fork Kits (44)
- Front Fork Lowering Kits (10)
- Front Fork Oil Seals (17)
- Front Fork Related (34)
- Front Fork Slider Parts (18)
- Front Fork Slider Tubes (86)
- Front Fork Springs (4)
- Front Fork Stem Parts (10)
- Head Cup Parts (2)
- Head Cups (8)
- Internal Front Fork Parts (21)
- Narrow Glide Fork Parts (11)
- Springer Related Parts (27)
- Suspension Lowering Kits (6)
- Wide Glide Fork Parts (27)
-
Fuel (Gas, Oil, Air)
(793)
- Air Filter Covers (1)
- Air Filter Elements (27)
- Air Filter Kits (25)
- Air Filter Related (7)
- Air Filter Supports (9)
- Bendix/Zenith Carburetor Parts (13)
- Bendix/Zenith Carburetors (0)
- Choke Cables (6)
- Crankcase Vent Lines (1)
- Crossover Fuel Lines (10)
- Custom Fit Oil Lines (14)
- EFI Related (54)
- Engine Breather Kits (2)
- Engine Oil (6)
- Fuel And Oil Line (22)
- Fuel Catalyst (1)
- Fuel Filters (9)
- Fuel Injection Controllers & Tuners (16)
- Fuel Injection Diagnostic Tool (1)
- Fuel Injectors (27)
- Fuel Line Kits (2)
- Fuel Tank Doors & Related (6)
- Fuel Valve Covers (0)
- Fuel Valves & Related (47)
- Gas Cap Covers (2)
- Gas Caps (39)
- Gas Tank Mounting Parts (14)
- Gas Tank Mounts (10)
- Gas Tanks (55)
- Hose Clamps (10)
- Hose Ends (7)
- Ignition/Fuel Module Kits (2)
- Intake Mainfolds (1)
- Intake Manifold Clamps (8)
- Intake Manifold Related (19)
- Intake Related (1)
- Intake System Kits (8)
- Keihin/CV Carburetor Parts (17)
- Line Cover (0)
- Mikuni Carburetor Kits (6)
- Mikuni Carburetor Parts (61)
- Octane Booster (3)
- OE Fit Oil Lines (8)
- Oil & Fuel Tank Fittings (12)
- Oil Filter Adapters (2)
- Oil Filter Kits (12)
- Oil Filter Mounts (12)
- Oil Filter Related (8)
- Oil Filters (40)
- Oil Line Ends (6)
- Oil Line Fittings (14)
- Oil Line Kits (1)
- Oil Line Separators (4)
- Oil Pressure Gauge Related (10)
- Oil Pressure Gauges (16)
- Oil Tank Filler Plugs (7)
- Oil Tank Mounts (12)
- Oil Tank Related (28)
- Oil Tanks (20)
- Rocker Box Oil Lines (8)
- S&S Carburetor Kits (22)
- S&S Carburetor Related (35)
- Velocity Stacks (3)
-
General
(2511)
- Adhesives (2)
- Allen Head Related (11)
- Eyewear (45)
- Anti-Seize (1)
- Bracket Kits (0)
- Brake Bleeder Tools (2)
- Brake Fluid (2)
- Bungee Nuts (2)
- Bushing Tools (4)
- Calendars (0)
- Cargo Nets (2)
- Chain & Belt Tools (5)
- Charging Systems & Cell Phone Related (1)
- Cleaners & Degreasers (5)
- Clutch Tools (8)
- Detailer Related (2)
- Electrical Tools (7)
- Engine Cam Case Tools (3)
- Engine Cam Tools (7)
- Engine Crankcase Tools (8)
- Engine Tools (43)
- Engine/Transmission/Primary Oil (11)
- Epoxy Putty (1)
- Exhaust Liner (0)
- Exhaust Polish (2)
- Fork Oil (2)
- Front Fork Tools (14)
- Fuel & Oil Tools (5)
- Fuel Additives (4)
- Fuel Tank Prep & Liner (2)
- Gasket Maker & Sealants (3)
- Gifts & Related (12)
- Gloves (7)
- Goggles & Eyewear (47)
- Gun Oil, Cleaner & Polish (0)
- Hardware Assortment Kits (21)
- Hardware Storage Trays (1)
- Helmet Related (5)
- High Heat Spray Paint (7)
- Intake & Exhaust Tool (4)
- Krommets (11)
- Leather Polish (2)
- Lubricants & Grease (5)
- Matching Accessories (28)
- Metal Polish (3)
- Mid-USA Logo Gear & Novelties (16)
- Miscellaneous Tools (35)
- Motorcycle Covers (3)
- Multipurpose Tools (13)
- Nuts And Bolts (210)
- O Ring Assortment Kits (1)
- Oil Additives (1)
- Oil Pump Tools (2)
- Oil Stabilizers (3)
- Powertrain Hardware Kits (2)
- Primary Tools (5)
- Rear Fork Tools (3)
- Repair Manuals (22)
- Screws (47)
- Security Locks (0)
- Shock Absorber Tools (6)
- Shop Equipment (8)
- Silicone Sealants (4)
- Spacers (18)
- Spark Plug Tools (1)
- Specialty Apparel (100)
- Sprocket Shaft Tools (5)
- T-handle Rack (1)
- T-handle Tools (3)
- Thread Sealants (1)
- Threadlocker (4)
- Threadlocker Activator (0)
- Tie Downs/Assists/Soft Ties (20)
- Tire Pressure Gauges (2)
- Transmission Tools (23)
- T-Shirts & Related (6)
- Twin Cam Tools (9)
- Valve Guide Tools (1)
- Valve Spring Tools (2)
- Washers (24)
- Wheel Chock (6)
- Wheel Tools (14)
-
Wheel
(655)
- Axle Adjusters (8)
- Axle Hardware (17)
- Axle Spacers (26)
- Axles (59)
- Brake Disc Hardware (12)
- Brake Discs (42)
- Brake Pads (80)
- Caliper Brackets & Mounts (32)
- Caliper Related (31)
- Calipers (6)
- Disc Brake Parts (10)
- Drum Brake Parts (11)
- Front Caliper Kits (1)
- Front Calipers & Kits (27)
- Hub Assemblies (5)
- Hub Parts (31)
- Inner Tubes (19)
- Rear Calipers & Kits (43)
- Rim Strips (3)
- Rims (4)
- Spokes & Nipples (9)
- Tires (90)
- Valve Stem Caps (18)
- Valve Stems (3)
- Wheel Balancing Weights (4)
- Wheel Bearings (6)
- Wheels (79)
- PROMOTIONS
- Instructions
- SOPs
Menu
- Home /
- Drive Train /
- Big Twin 4 Speed Parts /
- TRANSMISSION PARTS FOR BIG TWIN 4 SPEED MAIN DRIVE GEAR ASSEMBLY & HOUSING
Contact Us
Dealer Tools
Account
Copyright © 2026 Mid-USA Motorcycle Parts. All rights reserved.
Website developed by Ryne Sandler and PPI Information Systems