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M20/21 1st Gear

產品敘述

This 1st gear is designed for Muncie M20 and M21 4-speed manual transmissions. Made from carburized alloy steel (SCM415 or SAE 8620) with a helical tooth profile and integrated baulkring teeth, it ensures smooth low-speed torque delivery and reliable gear engagement. Ideal for classic GM muscle car restorations or replacements.

產品規格

Gear Type: Helical Gear

Tooth Count: 36 teeth

Material: Carburized alloy steel (SCM415, SAE 8620)

Heat Treatment: Carburized and quenched

Surface Hardness: HRC 58–62

  • 型號:WT297-12A, 3884685

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