Bronze tappet blocks are designed for high performance applications by taking advantage of excellent heat transfer capabilities

This innovative and exclusive top clamp is the solution

Nylon carcass for extended wear with a classic appearance

XLCH and 1973-1977 FX

4-Speed Gear Set 1977-E84 Harley-Davidson Big Twin - Close Ratio Subcategory_Oil Tank Caps Bronze tappet blocks are designedAndrews 4 speed gears, transmissions last longer, shift faster, and just plain run better. Bikes with Andrews gears feel so good that its hard to believe until you ex perience the difference for yourself. See Additional Information for fitment. Available in Stock or Close Ratio Gears are made from high nickel alloy steel, heat treated and shot peened to give maximum durability and strength Made in the U. S. A. Specifications: Style: Stock Ratio First