Sonnax heavy duty forward drum 34554-01 is a lightweight upgrade for GM TH400 high performance applications. Significant weight was removed behind the forward piston, leaving a larger fluid apply volume. This larger fluid apply volume does not significantly affect clutch apply and release times, but some sensitive applications may benefit from reduced volume with Sonnax clutch volume spacer kit 34554-11K. The optional spacer is manufactured from billet aluminum.

Reduce clutch fill time when used with heavy duty forward drum 34554-01
Billet aluminum spacer is lighter and more affordable than the OE steel it replaces

More From This Category

COMP Cams Rocker Arm, Ultra Pro Magnum, Full Roller, Chromoly Steel, 1.6 Ratio, For Chevrolet V6 and SBC 3/8 in. Stud, Each

COMP Cams Rocker Arm, Ultra Pro Magnum, Full Roller, Chromoly Steel, 1.6 Ratio, For Chevrolet V6 and SBC 3/8 in. Stud, Each

$65.07

6Boost Exhaust Manifold, Izusu G180, T3/Nil 'Open Entry' to suit IWG

6Boost Exhaust Manifold, Izusu G180, T3/Nil 'Open Entry' to suit IWG

$1,100.00

QA1 Front Sway Bar, 71-76 GM B-Body

QA1 Front Sway Bar, 71-76 GM B-Body

$808.58

Whiteline Front Control Arm, Upper Inner, Rear Bushing, 46.6mm and 45.6mm OD, 28mm ID, Toyota, Kit

Whiteline Front Control Arm, Upper Inner, Rear Bushing, 46.6mm and 45.6mm OD, 28mm ID, Toyota, Kit

$117.96

Dakota Digital Gauge, MDX System, 1955-56 Chevy Car, Black Alloy Style Face, Blue Display, Custom

Dakota Digital Gauge, MDX System, 1955-56 Chevy Car, Black Alloy Style Face, Blue Display, Custom

$1,968.40