High pressure needs high-rate springs, and TCI pressure regulator springs will make the psi that you need, depending on the boost valve selection. When you need replacement parts for your competition transmission, TCI will keep you in the race.

More From This Category

Sonnax 1.65 Ratio Extreme Planetary Assembly Kit, Powerglide 1.65 Ratio, Each

Sonnax 1.65 Ratio Extreme Planetary Assembly Kit, Powerglide 1.65 Ratio, Each

$4,468.57

Motive Gear Differential Master Bearing Kit, Koyo, For Ford F-250 1985–1998, Kit

Motive Gear Differential Master Bearing Kit, Koyo, For Ford F-250 1985–1998, Kit

$361.04

Sonnax Bore Sizing Tool, Ford, 4R100 & E4Od, Each

Sonnax Bore Sizing Tool, Ford, 4R100 & E4Od, Each

$97.67

Sonnax Shift Lever Kit, GM Th400, Each

Sonnax Shift Lever Kit, GM Th400, Each

$42.27

RTS Performance Transmission Super-R Rebuild Kit, Ford 05-0n, 5R55S, Falcon BF, FG, 5 Speed RWD & 4WD, Kit

RTS Performance Transmission Super-R Rebuild Kit, Ford 05-0n, 5R55S, Falcon BF, FG, 5 Speed RWD & 4WD, Kit

$862.92