Description
Original Equipment Manufacturer (OEM) Harley-Davidson Shovelhead Big Twin 4-Speed Transmission Replacement Gears & Shifting Fork Set.
- Application: 4-Speed Manual Transmission Mainshaft / Countershaft Internal Gearbox Internals
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Components Included: (4) Face-Engagement Slide Gears, (1) Dual-Diameter Splined Gear Cluster Hub, (1) Cast Steel Shifting Fork Guide Link
Up for sale is a genuine factory Harley-Davidson 4-speed transmission internal gear repair bundle. Removed directly from a classic Big Twin Shovelhead gearbox, this is an authentic US-made heavy-duty steel component grouping. This kit includes four slider engagement gears, the dual-tiered splined main gear hub, and one matching factory shifting fork.
Avoid cheap unbranded reproduction transmission gears that suffer from soft steel heat-treating, which leads to rapid tooth shearing or rounded engagement corners under high engine torque. These factory original components are forged from high-tensile steel alloy and built to survive hard acceleration and decades of heavy road use. This grouping is the perfect mechanical solution for replacing stripped teeth, fixing a bike that pops out of 2nd or 3rd gear, or rebuilding a custom vintage ratchet-top or rotary-top chopper transmission.
šļø Fitment & Vehicle Compatibility:
Direct drop-in mechanical replacement for standard 4-speed manual gearboxes across the classic Shovelhead era:
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Harley-Davidson Shovelhead Big Twins (1200cc / 74ci & 1340cc / 80ci): Fits 1966 to Early 1984 FL, FLH, FLHS, FX, FXE, FXEF, FXS Low Rider, and FXWG Wide Glide configurations utilizing standard 4-speed main and countershaft layouts.
š Condition Notes:
This is a pre-owned vintage factory engine/transmission takeoff component grouping.
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The Gear Teeth: All individual gear teeth profiles are structurally sound, sharp, and true, entirely free from broken steps, heavy face pitting, or chipped edges.
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Engagement Dogs: The face-engagement locking dogs and matching recessed pockets are clean with crisp, square tracking corners (not heavily rounded out or wallowed from missed shifts).
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Shifting Fork: The cast steel shifter fork is perfectly straight, true, and free of crash twists or hairline stress cracks. The tracking pads show normal polished friction marks from normal use but retain plenty of material thickness.
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Splines: Internal hub splines are deep and clear. Components display typical superficial oil coloration and light cosmetic storage oxidation (as clearly detailed in the images), but they are fully ready to clean, oil, and assemble into a working gearbox.
