Skip to content

Fast Dispatch Australia-Wide

Ride Tested Parts From a Real Custom Shop

  • Home
  • Shop by Part Type
    • Accessories
    • Audio & Video & Security
    • Brakes
    • Cables & Hydraulic Lines
    • Chassis & Sheet Metal
    • Clutch & Primary Drive
    • Electrical
    • Engine
    • Exhaust - Spare Parts Only
    • Exhaust - Systems & Mufflers
    • Foot Controls
    • Fuel & Air Systems
    • Gasket Kits & Gaskets & Seals
    • Gloves
    • Handlebars & Controls
    • Headwear
    • Instruments & Gauges
    • Lighting
    • Mounting Hardware & Covers
    • Oil Filters & Oils & Detailing
    • Promotional & Display Items
    • Seats & Sissy Bars
    • Suspension
    • T-Shirts
    • Tires & Wheels
    • Tools & Supplies
    • Transmission & Final Drive
    • Windshields & Luggage
  • Shop by Model
    • Softail
    • Dyna
    • Sportster
    • Touring (FLH)
    • FXR
    • Street 500/750
    • V-Rod
    • Pan America
    • Indian
    • Victory
    • Metric & Other Makes
  • Shop by Brand
    • AIRAID
    • All Balls Racing
    • Alloy Art
    • American Prime Manufacturing
    • Andrews Products
    • Arlen Ness
    • Arnott Motorcycle Air Suspension
    • Autolite Spark Plugs
    • AV&V
    • Avon Grips
    • Avon Tyres
    • Badlands
    • Bagger Nation
    • Bandit Bars
    • Barnett Clutches
    • Belt Drives Ltd
    • Bender Cycle
    • Buchanans Spoke Rim
    • Burly Brand
    • Chris Products
    • Ciro3D
    • Coastal Moto
    • Cobra Exhaust
    • Colony Machine
    • Cometic Gaskets
    • Compu Fire
    • CP Carrillo Pistons
    • Crooked Clubhouse
    • Cruz Tools
    • Custom DK Products
    • Custom Dynamics
    • Cycle Electric Inc
    • Cycle Pro Llc
    • Cycle Visions
    • D&D Exhaust
    • Dakota Digital
    • Daytona Japan
    • Daytona Twin Tec
    • Death Collective
    • Deka Batteries
    • Design Engineering Inc
    • Diamond Drives
    • DNA Specialty
    • Drag Specialties
    • Dunlop
    • Eastern Motorcycle Parts
    • Energy One Clutches
    • Evolution Industries
    • Factory 47 Handlebars
    • Feuling
    • Figurati Designs
    • Firebrand Exhaust
    • Flo Motorsports
    • Fox Suspension
    • Freedom Performance Exhaust
    • Fuel Tool
    • G2 Ergonomics
    • GBrakes
    • Golan Fuel Taps
    • Goodridge
    • Handy Bike Lifts
    • Hard Street
    • Hawg Halters
    • Hog Tunes Audio
    • Hoglights
    • Horsepower Inc
    • Jagg Oil Coolers
    • James Gaskets Inc
    • Jims
    • K&L
    • K&N Filters
    • Keith Black Pistons
    • kellermann
    • Khrome Werks
    • Klock Werks
    • Kodlin
    • Koso
    • Kraus Moto
    • Kuryakyn
    • LA Choppers
    • Legend Suspension
    • Lepera Seats
    • Letric Lighting Co
    • Lindby Custom Inc
    • Lyndall Brakes
    • Magnum Shielding
    • Memphis Shades
    • Motherwell Products
    • Müller Motorcycle AG
    • Namz Custom Cycle Products
    • New Rage Cycles
    • ODI Grips & Bars
    • PBI Sprockets
    • Performance Machine
    • Pingle
    • Progressive Suspension
    • PSR Levers
    • Quantum Fuel Systems
    • Rekluse Clutch Revolution
    • Ricks Motorsport Electrics
    • Rinehart Exhaust
    • RK Chain
    • Rocker Lockers
    • Rocket Cams
    • Roland Sands Design
    • Rollies Speed Shop
    • RWD V-Twin
    • S&S
    • Saddlemen Seats
    • Sawicki Speed
    • Slyfox
    • SP Concepts Exhaust
    • Spectro Oils
    • Spyke Motorcycle Products
    • Standard Motorcycle Products
    • Star Racing CAMS
    • Supertrapp Exhaust
    • Taylor Cable Products
    • Techno Research Tuner
    • Thrashin Supply
    • Thunder Max
    • Todds Cycle
    • Trask Performance
    • TTS TUNER
    • TUCKER
    • Two Brothers Racing Exhaust
    • Ultra Cool
    • V-Factor
    • Vance and Hines
    • Walker Products
    • Wild 1 Handlebars
    • Wilwood Engineering
    • Wood Performance
    • Zipper Performance
  • Tyres
Log in
  • Facebook
  • Instagram
Iron Horse Customs
  • Home
  • Shop by Part Type
    • Accessories
    • Audio & Video & Security
    • Brakes
    • Cables & Hydraulic Lines
    • Chassis & Sheet Metal
    • Clutch & Primary Drive
    • Electrical
    • Engine
    • Exhaust - Spare Parts Only
    • Exhaust - Systems & Mufflers
    • Foot Controls
    • Fuel & Air Systems
    • Gasket Kits & Gaskets & Seals
    • Gloves
    • Handlebars & Controls
    • Headwear
    • Instruments & Gauges
    • Lighting
    • Mounting Hardware & Covers
    • Oil Filters & Oils & Detailing
    • Promotional & Display Items
    • Seats & Sissy Bars
    • Suspension
    • T-Shirts
    • Tires & Wheels
    • Tools & Supplies
    • Transmission & Final Drive
    • Windshields & Luggage
  • Shop by Model
    • Softail
    • Dyna
    • Sportster
    • Touring (FLH)
    • FXR
    • Street 500/750
    • V-Rod
    • Pan America
    • Indian
    • Victory
    • Metric & Other Makes
  • Shop by Brand
    • AIRAID
    • All Balls Racing
    • Alloy Art
    • American Prime Manufacturing
    • Andrews Products
    • Arlen Ness
    • Arnott Motorcycle Air Suspension
    • Autolite Spark Plugs
    • AV&V
    • Avon Grips
    • Avon Tyres
    • Badlands
    • Bagger Nation
    • Bandit Bars
    • Barnett Clutches
    • Belt Drives Ltd
    • Bender Cycle
    • Buchanans Spoke Rim
    • Burly Brand
    • Chris Products
    • Ciro3D
    • Coastal Moto
    • Cobra Exhaust
    • Colony Machine
    • Cometic Gaskets
    • Compu Fire
    • CP Carrillo Pistons
    • Crooked Clubhouse
    • Cruz Tools
    • Custom DK Products
    • Custom Dynamics
    • Cycle Electric Inc
    • Cycle Pro Llc
    • Cycle Visions
    • D&D Exhaust
    • Dakota Digital
    • Daytona Japan
    • Daytona Twin Tec
    • Death Collective
    • Deka Batteries
    • Design Engineering Inc
    • Diamond Drives
    • DNA Specialty
    • Drag Specialties
    • Dunlop
    • Eastern Motorcycle Parts
    • Energy One Clutches
    • Evolution Industries
    • Factory 47 Handlebars
    • Feuling
    • Figurati Designs
    • Firebrand Exhaust
    • Flo Motorsports
    • Fox Suspension
    • Freedom Performance Exhaust
    • Fuel Tool
    • G2 Ergonomics
    • GBrakes
    • Golan Fuel Taps
    • Goodridge
    • Handy Bike Lifts
    • Hard Street
    • Hawg Halters
    • Hog Tunes Audio
    • Hoglights
    • Horsepower Inc
    • Jagg Oil Coolers
    • James Gaskets Inc
    • Jims
    • K&L
    • K&N Filters
    • Keith Black Pistons
    • kellermann
    • Khrome Werks
    • Klock Werks
    • Kodlin
    • Koso
    • Kraus Moto
    • Kuryakyn
    • LA Choppers
    • Legend Suspension
    • Lepera Seats
    • Letric Lighting Co
    • Lindby Custom Inc
    • Lyndall Brakes
    • Magnum Shielding
    • Memphis Shades
    • Motherwell Products
    • Müller Motorcycle AG
    • Namz Custom Cycle Products
    • New Rage Cycles
    • ODI Grips & Bars
    • PBI Sprockets
    • Performance Machine
    • Pingle
    • Progressive Suspension
    • PSR Levers
    • Quantum Fuel Systems
    • Rekluse Clutch Revolution
    • Ricks Motorsport Electrics
    • Rinehart Exhaust
    • RK Chain
    • Rocker Lockers
    • Rocket Cams
    • Roland Sands Design
    • Rollies Speed Shop
    • RWD V-Twin
    • S&S
    • Saddlemen Seats
    • Sawicki Speed
    • Slyfox
    • SP Concepts Exhaust
    • Spectro Oils
    • Spyke Motorcycle Products
    • Standard Motorcycle Products
    • Star Racing CAMS
    • Supertrapp Exhaust
    • Taylor Cable Products
    • Techno Research Tuner
    • Thrashin Supply
    • Thunder Max
    • Todds Cycle
    • Trask Performance
    • TTS TUNER
    • TUCKER
    • Two Brothers Racing Exhaust
    • Ultra Cool
    • V-Factor
    • Vance and Hines
    • Walker Products
    • Wild 1 Handlebars
    • Wilwood Engineering
    • Wood Performance
    • Zipper Performance
  • Tyres
Log in Cart

Item added to your cart

View cart

Collection: Transmission - BT 4 spd era

Shop by Type

  • Complete Gear Sets BT 4 spd era
  • Transmission Externals BT 4 spd era
  • Transmission Internals BT 4 spd era
Remove all

79 products

Filter and sort Filter

Filter and sort

Filter

79 products

Remove all
Remove all

79 products

  • Transmission Mainshaft. Fits 4Spd Big Twin Late 1984-1986 with OEM 4 Stud Wet Clutch. - Andrews Products

    Transmission Mainshaft. Fits 4Spd Big Twin Late 1984-1986 with OEM 4 Stud Wet Clutch. - Andrews Products

    Transmission Mainshaft. Fits 4Spd Big Twin Late 1984-1986 with OEM 4 Stud Wet Clutch. - Andrews Products

    Vendor:
    Andrews Products
    Regular price $515.00 AUD
    Regular price Sale price $515.00 AUD
  • Transmission Mainshaft. Fits 4Spd Big Twin 1970-Early 1984 with Chain Drive and OEM Dry Clutch. - Andrews Products

    Transmission Mainshaft. Fits 4Spd Big Twin 1970-Early 1984 with Chain Drive and OEM Dry Clutch. - Andrews Products

    Transmission Mainshaft. Fits 4Spd Big Twin 1970-Early 1984 with Chain Drive and OEM Dry Clutch. - Andrews Products

    Vendor:
    Andrews Products
    Regular price $490.00 AUD
    Regular price Sale price $490.00 AUD
  • Transmission Mainshaft. Fits 4Spd Big Twin 1965-1969. - Andrews Products

    Transmission Mainshaft. Fits 4Spd Big Twin 1965-1969. - Andrews Products

    Transmission Mainshaft. Fits 4Spd Big Twin 1965-1969. - Andrews Products

    Vendor:
    Andrews Products
    Regular price $484.00 AUD
    Regular price Sale price $484.00 AUD
  • Transmission Mainshaft. Fits 4Spd Big Twin 1937-64. - Andrews Products

    Transmission Mainshaft. Fits 4Spd Big Twin 1937-64. - Andrews Products

    Transmission Mainshaft. Fits 4Spd Big Twin 1937-64. - Andrews Products

    Vendor:
    Andrews Products
    Regular price $494.00 AUD
    Regular price Sale price $494.00 AUD
  • Transmission Rebuild Kit. Fits 4Spd Big Twin 1980-1986 with Castle Top Transmission. - Jims

    Transmission Rebuild Kit. Fits 4Spd Big Twin 1980-1986 with Castle Top Transmission. - Jims

    Transmission Rebuild Kit. Fits 4Spd Big Twin 1980-1986 with Castle Top Transmission. - Jims

    Vendor:
    Jims
    Regular price $618.00 AUD
    Regular price Sale price $618.00 AUD
  • Transmission End Cover - Chrome. Fits 4Spd Big Twin 1936-1984 - Rollies Speed Shop

    Transmission End Cover - Chrome. Fits 4Spd Big Twin 1936-1984 - Rollies Speed Shop

    Transmission End Cover - Chrome. Fits 4Spd Big Twin 1936-1984 - Rollies Speed Shop

    Vendor:
    Rollies Speed Shop
    Regular price $99.00 AUD
    Regular price Sale price $99.00 AUD
  • Transmission Adjuster Plate. Fits 4Spd Big Twin 1958-1984 - V-Factor

    Transmission Adjuster Plate. Fits 4Spd Big Twin 1958-1984 - V-Factor

    Transmission Adjuster Plate. Fits 4Spd Big Twin 1958-1984 - V-Factor

    Vendor:
    V-Factor
    Regular price $85.00 AUD
    Regular price Sale price $85.00 AUD
  • Outer Countershaft Brg Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Outer Countershaft Brg Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Outer Countershaft Brg Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $10.00 AUD
    Regular price Sale price $10.00 AUD
  • Main Shaft Roller Bearing Thrust Washer. Fits 4Spd Big Twin 1936-Early 1977 - Bender Cycle

    Main Shaft Roller Bearing Thrust Washer. Fits 4Spd Big Twin 1936-Early 1977 - Bender Cycle

    Main Shaft Roller Bearing Thrust Washer. Fits 4Spd Big Twin 1936-Early 1977 - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $12.00 AUD
    Regular price Sale price $12.00 AUD
  • Standard Main Shaft 2nd & 3rd Gear Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Standard Main Shaft 2nd & 3rd Gear Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Standard Main Shaft 2nd & 3rd Gear Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $10.00 AUD
    Regular price Sale price $10.00 AUD
  • Low & Reverse Gears Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Low & Reverse Gears Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Low & Reverse Gears Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $10.00 AUD
    Regular price Sale price $10.00 AUD
  • 0.100in. Countershaft Gear End Thrust Washer - Pack of 5. Fits 4Spd Big Twin 1936-1986. - Bender Cycle

    0.100in. Countershaft Gear End Thrust Washer - Pack of 5. Fits 4Spd Big Twin 1936-1986. - Bender Cycle

    0.100in. Countershaft Gear End Thrust Washer - Pack of 5. Fits 4Spd Big Twin 1936-1986. - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $42.00 AUD
    Regular price Sale price $42.00 AUD
  • 0.082in. Countershaft Gear End Thrust Washer - Pack of 5. Fits 4Spd Big Twin 1936-1986. - Bender Cycle

    0.082in. Countershaft Gear End Thrust Washer - Pack of 5. Fits 4Spd Big Twin 1936-1986. - Bender Cycle

    0.082in. Countershaft Gear End Thrust Washer - Pack of 5. Fits 4Spd Big Twin 1936-1986. - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $42.00 AUD
    Regular price Sale price $42.00 AUD
  • 0.074in. Countershaft Gear End Thrust Washer - Pack of 5. Fits 4Spd Big Twin 1936-1986. - Bender Cycle

    0.074in. Countershaft Gear End Thrust Washer - Pack of 5. Fits 4Spd Big Twin 1936-1986. - Bender Cycle

    0.074in. Countershaft Gear End Thrust Washer - Pack of 5. Fits 4Spd Big Twin 1936-1986. - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $42.00 AUD
    Regular price Sale price $42.00 AUD
  • 0.074in.-0.100in. Countershaft Gear End Thrust Washer Kit. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    0.074in.-0.100in. Countershaft Gear End Thrust Washer Kit. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    0.074in.-0.100in. Countershaft Gear End Thrust Washer Kit. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $49.00 AUD
    Regular price Sale price $49.00 AUD
  • Standard Countershaft 1st & 2nd Gear Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Standard Countershaft 1st & 2nd Gear Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Standard Countershaft 1st & 2nd Gear Thrust Washer. Fits 4Spd Big Twin 1936-1986 - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $10.00 AUD
    Regular price Sale price $10.00 AUD
  • Kick Start Spring Stud - Chrome. Fits Big Twin 1936-1984. - Colony Machine

    Kick Start Spring Stud - Chrome. Fits Big Twin 1936-1984. - Colony Machine

    Kick Start Spring Stud - Chrome. Fits Big Twin 1936-1984. - Colony Machine

    Vendor:
    Colony Machine
    Regular price $12.00 AUD
    Regular price Sale price $12.00 AUD
  • Kick Start Cover Stud Kit. Fits Big Twin 1936-1984. - Colony Machine

    Kick Start Cover Stud Kit. Fits Big Twin 1936-1984. - Colony Machine

    Kick Start Cover Stud Kit. Fits Big Twin 1936-1984. - Colony Machine

    Vendor:
    Colony Machine
    Regular price $50.00 AUD
    Regular price Sale price $50.00 AUD
  • Starter Clutch Gear Spring - Pack 10. Fits 4Spd Big Twin 1936-1986. - Eastern Motorcycle Parts

    Starter Clutch Gear Spring - Pack 10. Fits 4Spd Big Twin 1936-1986. - Eastern Motorcycle Parts

    Starter Clutch Gear Spring - Pack 10. Fits 4Spd Big Twin 1936-1986. - Eastern Motorcycle Parts

    Vendor:
    Eastern Motorcycle Parts
    Regular price $30.00 AUD
    Regular price Sale price $30.00 AUD
  • Shifter Pawl Spring - Pack 10. Fits Ratchet Lid Transmission Big Twin 1936-1978 - Eastern Motorcycle Parts

    Shifter Pawl Spring - Pack 10. Fits Ratchet Lid Transmission Big Twin 1936-1978 - Eastern Motorcycle Parts

    Shifter Pawl Spring - Pack 10. Fits Ratchet Lid Transmission Big Twin 1936-1978 - Eastern Motorcycle Parts

    Vendor:
    Eastern Motorcycle Parts
    Regular price $15.00 AUD
    Regular price Sale price $15.00 AUD
  • Kick Start Return Spring - Chrome. Fits 4Spd Big Twin 1936-1986 - Rollies Speed Shop

    Kick Start Return Spring - Chrome. Fits 4Spd Big Twin 1936-1986 - Rollies Speed Shop

    Kick Start Return Spring - Chrome. Fits 4Spd Big Twin 1936-1986 - Rollies Speed Shop

    Vendor:
    Rollies Speed Shop
    Regular price $25.00 AUD
    Regular price Sale price $25.00 AUD
  • Transmission Main Shaft Sprocket Spacer. Fits 4Spd Big Twin 1936-1985 - Bender Cycle

    Transmission Main Shaft Sprocket Spacer. Fits 4Spd Big Twin 1936-1985 - Bender Cycle

    Transmission Main Shaft Sprocket Spacer. Fits 4Spd Big Twin 1936-1985 - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $5.00 AUD
    Regular price Sale price $5.00 AUD
  • Main Shaft Drive Gear Spacer. Fits 4Spd Big Twin Late 1977-1979 - Bender Cycle

    Main Shaft Drive Gear Spacer. Fits 4Spd Big Twin Late 1977-1979 - Bender Cycle

    Main Shaft Drive Gear Spacer. Fits 4Spd Big Twin Late 1977-1979 - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $25.00 AUD
    Regular price Sale price $25.00 AUD
  • Main Shaft Drive Gear Spacer. Fits 4Spd Big Twin 1938-Early 1977 - Bender Cycle

    Main Shaft Drive Gear Spacer. Fits 4Spd Big Twin 1938-Early 1977 - Bender Cycle

    Main Shaft Drive Gear Spacer. Fits 4Spd Big Twin 1938-Early 1977 - Bender Cycle

    Vendor:
    Bender Cycle
    Regular price $28.00 AUD
    Regular price Sale price $28.00 AUD
  • 1
  • 2
  • 3
  • 4

Subscribe to our emails

  • Facebook
  • Instagram
Payment methods
  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa
© 2026, Iron Horse Customs Powered by Shopify
  • Privacy policy
  • Refund policy
  • Terms of service
  • Shipping policy
  • Contact information
  • Choosing a selection results in a full page refresh.
  • Opens in a new window.