Sonnax extreme duty forward clutch hub kit 34322-02K is manufactured from forged 4140 steel and features nitrited and case-hardened splines to eliminate spline wear in extreme applications in GM TH400, TH425, 4L80-E and 4L85-E units. Kit includes a bearing between hub and direct clutch housing. The case-hardening at bearing surfaces is removed to make further modifications easier. This forward clutch hub and bearing combination shifts the support of the forward clutch hub from the main shaft to the direct housing and sun gear shaft.
Compared to OE or other replacement forward clutch hubs, Sonnax extreme duty forward clutch hub kit 34322-02K has an additional .025” thickness designed-in to reduce endplay and provide further endplay adjustment options. No machining is required for typical installation.
Hub outer spline length is increased by .055" to allow additional clutch with shortened piston. This added length does not interfere with normal piston travel and can be used with any piston without modifications.

Eliminates spline wear in extreme power and offroad applications
Simple installation adds bearing and reduces unit endplay
Easily modified for addition of second bearing

More From This Category

PHC Clutch Clutch Kit, PHC Heavy Duty, Upgrade, 240 mm x 24T x 25.5 mm, For Nissan Cefiro 1994-1998, 3.0 Ltr, VQ30DE, 164KW HA32, 8/94-11/98, New Zeal

PHC Clutch Clutch Kit, PHC Heavy Duty, Upgrade, 240 mm x 24T x 25.5 mm, For Nissan Cefiro 1994-1998, 3.0 Ltr, VQ30DE, 164KW HA32, 8/94-11/98, New Zeal

$320.28

PHC Clutch Clutch Kit, PHC Standard, 300 mm x 16T x 30.0 mm, For Isuzu SBR Series 1973-1979, 5.4 Ltr, 6BB1 SBR320, 7/73-10/79, Kit

PHC Clutch Clutch Kit, PHC Standard, 300 mm x 16T x 30.0 mm, For Isuzu SBR Series 1973-1979, 5.4 Ltr, 6BB1 SBR320, 7/73-10/79, Kit

$821.35

PHC Clutch Clutch Kit, PHC Standard, 230 mm x 26T x 28.7 mm, For Mercedes Benz C180 Kompressor 2002-2004, 1.8 Ltr SCMPFI, M271.946, 105kw W203, Sequen

PHC Clutch Clutch Kit, PHC Standard, 230 mm x 26T x 28.7 mm, For Mercedes Benz C180 Kompressor 2002-2004, 1.8 Ltr SCMPFI, M271.946, 105kw W203, Sequen

$1,645.53

PHC Clutch Clutch Kit, PHC Standard, 190 mm x 23T x 26.2 mm, For Ford Cortina 1972-1974, 1.6 Ltr, L2A TC, 10/72-10/74, 3 Bolt Cover, Kit

PHC Clutch Clutch Kit, PHC Standard, 190 mm x 23T x 26.2 mm, For Ford Cortina 1972-1974, 1.6 Ltr, L2A TC, 10/72-10/74, 3 Bolt Cover, Kit

$228.59

PHC Clutch Clutch Kit, PHC Standard, 250 mm x 23T x 26.1 mm, For Mazda CX7 2009-on, 2.2 Ltr, R2, 127kw ERA, 9/09-, Kit

PHC Clutch Clutch Kit, PHC Standard, 250 mm x 23T x 26.1 mm, For Mazda CX7 2009-on, 2.2 Ltr, R2, 127kw ERA, 9/09-, Kit

$234.16

PHC Clutch Clutch Kit, PHC Standard, 325 mm x 14T x 35.0 mm, For Mitsubishi Fuso FK 1982-1984, 6.6 Ltr TDI, 6D14AT FK115, 1/82-12/84, Kit

PHC Clutch Clutch Kit, PHC Standard, 325 mm x 14T x 35.0 mm, For Mitsubishi Fuso FK 1982-1984, 6.6 Ltr TDI, 6D14AT FK115, 1/82-12/84, Kit

$348.70