Short Summary: The G885513 ring and pinion set by Motive Gear is engineered for GM 8.5"/8.625" 10-bolt axles.
With a gear ratio of 5.13 and construction from 8620 steel, it delivers reliability and strength for high-performance street, off-road, and towing applications.
Key Features Axle Fitment: GM 8.5" / 8.625" (10 Bolt) Gear Ratio: 5.13 Pinion Gear Teeth: 8 Pinion Shaft Diameter: 1.626" Pinion Spline Count: 30 Ring Gear Teeth: 41 Ring Gear Outside Diameter: 8.5" Ring Gear Bolt Quantity: 10 Material: 8620 Heat-Treated Steel Carrier Break: 2.73 & numerically higher Included: Ring Gear (x1), Pinion Gear (x1) Vehicle Compatibility Fits GM 8.5"/8.625" 10-bolt differentials across a wide range of Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, and Saab vehicles equipped with 30-spline axles.
Buick 1973–1975 Apollo 1971–1981 Estate Wagon 1971–1985 LeSabre 1973–1977, 1984–1987 Regal 1970–1972, 1975–1979 Skylark 2004–2007 Rainier Cadillac 1976–1979 Seville 1977–1984 DeVille 1987–1992 Brougham 1991–1996 Fleetwood 1999–2013 Escalade Chevrolet 1970–1981 Camaro 1971–1996 Caprice 1971–1996 Impala 1971–1996 Suburban 1500 1995–2013 Tahoe 1999–2020 Silverado 1500 1983–2004 S10 & S10 Blazer 2002–2009 Trailblazer GMC 1992–2013 Yukon & Yukon XL 1500 1999–2020 Sierra 1500 2004–2012 Canyon 1970–1999 C/K/R/V 1500/2500 Trucks Hummer / Isuzu / Oldsmobile / Pontiac / Saab 2006–2010 Hummer H3/H3T 2003–2008 Isuzu Ascender 1970–1987 Oldsmobile Cutlass Models 1970–1981 Pontiac Firebird 2005–2009 Saab 9-7X Replaces OEM & Aftermarket Part Numbers Yukon Gear: YG GM8.5-513 Richmond Gear: 69-0171-1 Revolution Gear: GM10-513 G2 Axle & Gear: 2-2021-513 SVL: 2023707 Nitro Gear: GM8.5-513-NG USA Standard Gear: ZG GM8.5-513 Transtar: 742G730H Warranty & Quality Assurance Backed by a 2-Year / 100,000-Mile Warranty, Motive Gear ring and pinion sets are trusted by professionals and enthusiasts alike.
Designed for durability, precise fitment, and quiet operation under extreme conditions—on and off the road.
