Duragrip Differential GM 8.5/8.6 30 Spl YKNYDGGM8.5-3-30-1

Factory open differentials sacrifice traction for simplicity—costing you consistency on the track and control on the street. The Duragrip Differential transforms your GM 8.5/8.6 rear end into a true limited-slip unit, delivering improved power delivery to both wheels under acceleration while maintaining the smooth on/off-ramp behavior you need for responsive handling. Whether you're running drag radials or carving corners, this bolt-on upgrade eliminates wheel spin and maximizes grip without the complexity of a full locker.

• Duragrip Posi clutch
• 30-spline design
• GM 10-bolt housing
• 8.5-inch diameter
• Cast iron construction
• 2.73 ratio and up compatible
• Sold individually
• Bolt-on installation