- Total：{{ cartCount }}
-
M20 Cluster
Description
The WT297-8A is a wide-ratio cluster gear designed for 1963–1965 GM Muncie M20 4-speed transmissions. It fits 7/8" countershafts and is made from high-strength carburized alloy steel with a hardened surface (HRC 58–62) for excellent durability. Ideal for classic car restorations or OEM rebuilds, it ensures smooth shifting and reliable performance.
Specification
Gear Type: Cluster Gear
Countershaft Diameter: 7/8" (approx. 22.2 mm)
Material: Carburized Alloy Steel (SAE 8620 or SAE 4320H)
Heat Treatment: Carburized & Quenched
Surface Hardness: HRC 58–62
Tooth Count: 17 / 19 / 22 / 29T
Weight: Approx. 2.7 kg (6 lbs)
-
Model：WT297-8A
 (1).webp "T10W-12(S-913)")
