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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.
✔ 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
Transmission mounting bolts
Washers
Lock hardware
(Exact components match kit contents)
Harley riders restoring or maintaining their Shovelhead-era Big Twin and wanting reliable, long-lasting mounting hardware.
