Jims Transmission Rebuild Kit 33031-80 for 4-Speed Big Twin 1980-1986

Jims Transmission Rebuild Kit 33031-80 for 4-Speed Big Twin 1980-1986

$802.47
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Jims Transmission Rebuild Kit 33031-80 for 4-Speed Big Twin 1980-1986

Jims Transmission Rebuild Kit 33031-80 for 4-Speed Big Twin 1980-1986

$802.47

Restore peak shifting efficiency and internal reliability with the Jims Transmission Rebuild Kit, specifically assembled for 4-speed Big Twin models equipped with castle top transmissions. This comprehensive package combines high-grade, proven internal transmission components with a matching Jims gasket set to streamline overhaul and rebuild projects.

Engineered to high-tolerance factory specifications, this rebuild kit saves valuable service time during complete gearbox teardowns. Standard outside diameter races are included to ensure precise gear alignment and durable performance under heavy riding conditions.

Key Features

Brand Jims
Manufacturer Part Number 33031-80
Product Type Transmission Rebuild Kit
Transmission Type 4-Speed Castle Top
Race Size Standard O.D.
Includes Gasket Set Yes
Fitment Harley-Davidson Big Twin 1980-1986
Weight 1.8 kg

Highlights

  • Combines high-grade Jims transmission replacement components in one kit
  • Includes a complete Jims gasket set for sealed assembly
  • Features standard outside diameter (O.D.) races
  • Engineered for precise fitment on 4-speed castle top gearboxes

Compatibility

Compatible with 1980–1986 Harley-Davidson Big Twin 4-speed models featuring castle top transmissions.

What's included

  • Jims internal transmission rebuild components
  • Standard O.D. races
  • Complete Jims transmission gasket set

Frequently asked questions

What models does this transmission rebuild kit fit?

This kit fits 1980 through 1986 4-speed Big Twin motorcycles equipped with a castle top transmission.

Are oversize bearing races included with this kit?

No, standard outside diameter (O.D.) races are included. Oversize races must be ordered separately if required.

What additional bearings are required to complete the installation?

Full completion requires two countershaft bearings (JM-35961-52), one main transmission bearing (JM-9020), and one main drive gear bearing (JM-8905 for 1977-1981 or 25451 for 1982-1986).

Which specialty alignment tool is recommended for this rebuild?

The Jims shift fork alignment tool (part number JM-96385-78A) is recommended for assembly.

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