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28 Spline

  •      GM 8.5" Powergrip 28 Spline Posi LSD
    $340.00 Choose Options GM 8.5" Powergrip 28 Spline Posi LSD
    New Clutch type posi differential provides aggressive yet smooth traction, perfect for street and performance applications. These units are fully rebuildable and use Eaton type internal components. We recommend using...

  •  GM 8.5" Detroit Truetrac Posi 28 Spline 912A556
    $493.49 GM 8.5" Detroit Truetrac Posi 28 Spline 912A556
    The Detroit Truetrac is a helical-gear style performance differential that maximizes wheel traction and enhances driving and handling characteristics. Operation The Truetrac operates as a standard or open differential...

  • 1972-1987 GM 8.5" Yukon Duragrip 28 Spline Posi Master Install Pkg
    $495.09 1972-1987 GM 8.5" Yukon Duragrip 28 Spline Posi Master Install Pkg
    The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip...

  • GM 8.5" Eaton Posi LSD 28 Spline 19557-10
    $532.97 GM 8.5" Eaton Posi LSD 28 Spline 19557-10
    The Eaton Posi limited-slip differential prevents wheel slip before it can get started. To do that, carbon disc clutch packs, preloaded by a central spring assembly, are located behind each differential side gear. When...