Richmond Gear 83-1077-1, Master Rebuild Bearing Kit, For GM 8.6" IRS Rear ('10–'15 Camaro, Excludes ZL1) – Includes Koyo Bearings, Seal, Crush Sleeve, Shims & More – Replaces Motive R8.6RMK, R8.6RMKT

World American 112 123333 Differential Ring & Pinion – 3.90 Ratio, Front Axle, DS/DD461 Upgrade or replace your front differential with the World American 112 123333 ring and pinion gear set. Featuring a durable 3.90 gear ratio, spiral cut design, and precision-engineered for heavy-duty applications like DS/DD461 axles. Designed for long-lasting performance under demanding conditions. Features: • Gear Ratio: 3.90 • Ring Gear Tooth Count: 39 • Pinion Tooth Count: 10 • Ring Gear Diameter: 18 Inch • Pinion Shaft Diameter: 2.1 Inch • Pinion Spline Count: 41 • Gear Style: Spiral • Axle Position: Front • Part Number: 112 123333 • Brand: World American • Warranty: 1 Year or 100,000 Miles • California Proposition 65 Warning: Cancer and Reproductive Harm – www.P65Warnings.ca.gov Application & Compatibility: • Fits: DS/DD461 front axle systems • Compatible Models/Assemblies: 521, 581-P, DS/DD461 Replaces: • Euroricambi: 24170522 • PAI: 91110, BRP-9111, EE91110 • Genuine Newstar: EAR-123333, S-B629, SB629 • Eaton: EAR123333 Brand Warranty & Why Choose World American: World American provides top-tier drivetrain components built for heavy-duty and commercial use. Each part meets or exceeds OEM specifications and is backed by a 1-year/100,000-mile warranty, delivering both quality and peace

• Complete master bearing kit for GM 8.6" IRS differentials, designed specifically for 2010–2015 Chevrolet Camaro models (excluding ZL1) – includes everything required for a full differential rebuild.
• Contains high-quality Koyo tapered roller bearings for carrier, front and rear pinion, and pilot (where applicable), ensuring OE-level durability and performance.
• Kit includes essential components: pinion seal, crush sleeve or preload shim pack, pinion nut, ring gear bolts, RTV or gasket, marking compound, and thread locking compound.
• Includes precision-fit shims for both carrier and pinion setup – supports accurate backlash and bearing preload during installation, enhancing gear life and performance.
• Backed by Richmond Gear's 1-year or 50,000-mile warranty – built to meet or exceed OE specs for strength and reliability in high-performance or daily-use applications.