Revolution Gear & Axle 75-2023-30 GM 10.5 14 Bolt Full Spool 30-Spline 4.10 Down

Vehicle Fitment

• GM 10.5" 14-Bolt Full-Float Rear Axle -- 30 Spline
• 1973-1988 Chevrolet/GMC C20, C30, K20, K30
• 1989-1998 Chevrolet/GMC C2500, C3500, K2500, K3500
• 1999-2015 Chevrolet Silverado 2500/2500HD/3500/3500HD
• 1999-2015 GMC Sierra 2500/2500HD/3500/3500HD
• 1973-2015 Chevrolet/GMC Suburban 2500
• 1996-2015 Chevrolet Express 2500/3500/4500
• 1996-2015 GMC Savana 2500/3500/4500
• 2002-2006 Chevrolet Avalanche 2500
• 2000-2013 Chevrolet/GMC Yukon XL 2500

Fitment Notes

• Fits GM 10.5" 14-bolt full-float rear differentials with 30-spline axles ONLY
• For use with 4.10 and numerically lower gear ratios (3.73, 3.42, etc.)
• Also compatible with aftermarket "thick" ring and pinion gear sets
• Does NOT fit GM 14-bolt 9.5" semi-float rear axles
• Does NOT fit AAM 11.5" 14-bolt rear axles (2001+ HD trucks)
• Verify your axle type, spline count, and gear ratio before ordering
• Replaces the OE open or limited-slip carrier -- provides permanent 100% lockup
• Not recommended for street-driven vehicles
• Professional installation recommended

Features

• Full spool -- locks both axle shafts together permanently
• Delivers 100% power to both rear wheels at all times
• High-strength steel construction
• Precision machined for consistent gear mesh and quiet operation
• Designed for off-road, drag racing, and competition use
• Eliminates spider gears and carrier for maximum strength
• Lighter than a standard carrier assembly

Specifications

• Part Number: 75-2023-30
• Brand: Revolution Gear & Axle
• Type: Full Spool
• Differential: GM 10.5" 14-Bolt Full-Float
• Spline Count: 30
• Compatible Gear Ratios: 4.10 and Down (Numerically Lower)
• Material: Steel
• Application: Rear

Included Components

• Revolution Gear & Axle full spool (1)

Product Description

The Revolution Gear & Axle 75-2023-30 is a full steel spool designed for GM 10.5" 14-bolt full-float rear differentials with 30-spline axle shafts, compatible with gear ratios of 4.10 and numerically lower. A full spool replaces the factory open or limited-slip carrier and permanently locks both rear axle shafts together, delivering 100% power to both wheels at all times. This eliminates the spider gears and differential carrier entirely, resulting in a stronger, lighter, and more reliable drivetrain for off-road, drag racing, and competition applications. Precision machined from high-strength steel, the spool ensures accurate gear mesh for quiet operation and long service life. Because both wheels are permanently locked together with no differentiation, this spool is intended for off-road and racing use and is not recommended for street-driven vehicles. Verify your axle type, spline count, and current gear ratio before ordering. Revolution Gear & Axle products are street, off-road, and race proven with over a decade of aftermarket drivetrain experience.