Motorshop 4-Speed Transmission Gear Assembly for Harley XL 1987-1990

Upgrade your Harley‑Davidson XL's transmission with the Motorshop 4‑Speed Transmission Gear Assembly Unit, built specifically for 1987–1990 models. The complete gear set includes main and countershaft gears, shift forks, and shafts, all pre‑assembled to the trap door for precise alignment and reliable operation. A shift selector shaft is included to ensure smooth gear changes across the four speeds.

Installation requires establishing end play for the main and countershaft and aligning the trap door with the case. The unit's dimensions and weight are designed to ease handling during installation. Manufactured in the USA, this assembly emphasizes quality and durability for long‑term performance.

Fitment and upgrade paths

Fits Harley Davidson XL models from 1987 through 1990. For enhanced performance in a rebuild or upgrade, pair with the 17‑9982 Transmission Mainshaft and the 17‑4850 Andrews Clutch Gear 18 Tooth, both compatible with this assembly.

Why it matters for your XL

• Provides a ready‑to‑install 4‑speed gear assembly with main and countershaft gears, shift forks, and shafts
• Includes shift selector shaft for seamless upshifts
• Requires proper end play and trap door alignment for reliable operation
• Manufactured in the USA and built for durability in classic XL restorations
• Supports drivetrain longevity by restoring smooth gear changes
• Installation guidance is available as Transmission Assembly Tips

Transmission gear assembly unit 4-speed includes gears main and countershaft shift forks and shafts assembled to trap door.

Upgrade your Harley Davidson XL motorcycle with the Motorshop 4-Speed Transmission Gear Assembly Unit, designed specifically for models from 1987 to 1990. This comprehensive assembly includes main and countershaft gears, shift forks, and shafts, all pre-assembled to ensure precise operation. The design incorporates a trap door, which requires proper alignment with the case, and includes the shift selector shaft for seamless gear shifting. Proper setup involves establishing end play for the main and countershaft and aligning the trap door with the case, ensuring optimal transmission performance. For accurate installation, detailed instructions are available at Transmission Assembly Tips. This assembly is manufactured in the USA, guaranteeing quality and durability. To complete your transmission rebuild or upgrade, consider pairing this unit with suggested accessory items such as the 17-9982 Transmission Mainshaft and the 17-4850 Andrews Clutch Gear 18 Tooth, which are compatible with this assembly. The unit's dimensions and weight make it easy to handle during installation, and it fits Harley Davidson XL models from 1987 through 1990, providing a reliable solution for restoring or enhancing your motorcycle's drivetrain. Proper maintenance and installation of this gear assembly will ensure smooth gear changes and extended transmission life, making it a vital component for motorcycle enthusiasts and repair professionals alike.

Features:

• Includes main and countershaft gears, shift forks, and shafts assembled to trap door

• Shift selector shaft included for seamless gear shifting

• Requires proper end play and trap door alignment during installation

• Manufactured in USA for quality assurance

• Fits Harley Davidson XL models from 1987 to 1990

Fitment:
Harley Davidson XL 1987
Harley Davidson XL 1988
Harley Davidson XL 1989
Harley Davidson XL 1990