Automatic Transmission Shift Kits

Shift Kit, Performance, Buick, Chevy, Oldsmobile, Pontiac, GMC, TH400, 1965-95, Kit

Part Number: TRG-400-1-2

4.76 out of 5 stars ( 21 )

Estimated Ship Date: Today

Transmission Upgrade Kit, Shift Improver, GM, TH400, TH375, M40, Each

Part Number: BMM-20260

4.8 out of 5 stars ( 15 )

Estimated Ship Date: Today

Transmission Upgrade Kit, Shift Improver, GM, TH400, 3L80, Each

Part Number: BMM-20261

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

VALVE BODY KIT

Part Number: PIO-765010

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Drop Ship
• Special Order