Colony 9421-21 Transmission Mounting Kit | Harley Big Twin 1977–1986

Keep your classic Harley running strong with the Colony 9421-21 Transmission Mounting Kit, engineered for 1977–1986 Harley-Davidson Big Twin models. This complete hardware set gives you the reliable, factory-correct fitment your transmission needs for secure mounting and long-term durability.

Built from premium-grade steel and manufactured in the USA, this Colony kit replaces worn or corroded hardware with high-quality bolts, washers, and lock components designed to match OEM specifications. Perfect for restorations, rebuilds, and routine maintenance.

Why Riders Choose This Kit

• ✔ Direct OEM-style fit for 1977–1986 Big Twin models

• ✔ High-strength, corrosion-resistant hardware

• ✔ Improves transmission stability and reduces vibration

• ✔ Ideal for restoration, service, or hardware replacement

• ✔ Made in the USA with trusted Colony quality

What’s Included

• Transmission mounting bolts

• Washers

• Lock hardware
  (Exact components match kit contents)

Perfect For

Harley riders restoring or maintaining their Shovelhead-era Big Twin and wanting reliable, long-lasting mounting hardware.