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Gears / Cluster Gears

Hard Parts: Cluster Gears, Input Shafts & Syncros

Is your transmission whining in 1st, 2nd, and 3rd, but quiet in 4th? You likely have a worn Cluster Gear (Countershaft Gear). These "Hard Parts" are the guts of your manual transmission.

Rebuild Components We stock NOS and NORS and good-used internal gears for:

  • Muncie M20/M21/M22: The legendary GM 4-speeds.

  • Ford Toploader: Rugged performance boxes.

  • Borg Warner T10: The universal 4-speed.

  • Inventory: Input shafts, cluster gears, idler gears, and synchronizer rings (blocking rings).

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