M20/M21/M22 1-2 & 3-4 Synchro Slider
Description
This 1-2 & 3-4 Synchro Slider is specifically designed for Muncie M20, M21, M22, and early T10 4-speed manual transmissions. Featuring a precision-machined internal spline structure, it ensures secure and stable gear engagement during shifting. Available in both standard and torque-lock versions, this slider meets the needs of routine rebuilds as well as high-performance upgrades. Ideal for classic American muscle cars and vintage transmission restorations, it delivers smooth, reliable shifting—on the street or at the track.
Specification
Material : SCM415, SAE 8620
Heat Treatment : Carburized & quenched
Surface Hardness : HRC 58–62
Tooth Profile : Precision internal spline, bi-directional engagement design
Tooth Count : 36 teeth
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Model:3863112