Crown Race Gears / GM 10.5" 14 Bolt Race Gears

Crown Race Gears for GM 10.5" 14 Bolt Axles

GM 14 Bolt Gears

The GM 10.5" axle, more commonly known as the GM 14 Bolt, has been around since the 1970s and can be found under Chevy and GMC full size trucks and SUVs even today. The axle uses a large 10.5" diameter ring gear and features a secondary pinion support bearing to handle more power and torque.

Due to its strength, plentiful availability, and healthy aftermarket support, the GM 14 bolt has become an extremely popular rear axle swap for off-road vehicles and custom builds, usually paired with a Dana 60 front axle.

In response to the popularity of aftermarket axle housing and the increasing number of GM 14 bolt axles modified for front axle applications, 14 Bolt Crown Race Gears have been specifically designed for use in reverse rotation applications and have a polished backside for reduced friction on load bolts. They are also available in high clearance configurations to clear shaved axles.

Note that all GM 10.5" axles have a 4.10/4.56 carrier break. Differentials designed for 4.10 and numerically lower gears require "thick" gears for 4.56 and higher ratios. Differentials built for 5.56 and numerically higher ratios require standard (non-thick) gears and will not work with 4.10 and lower gears. (For more information and carrier breaks, click here.)

GM 10.5" 14 Bolt Standard Gears

All GM 14 bolt axles are low pinion (pinion gear enters below the axle center line) axles that use standard rotation gears. The following gears fit all GM 10.5" 14 bolt axles:

Part Number Gear Ratio Rotation Carrier Notes Pricing
CRG-GM105-373 3.73 Standard 4.10 & Down Full 10.5" Ring Gear Check Price
CRG-GM105-410 4.10 Standard 4.10 & Down Full 10.5" Ring Gear Check Price
CRG-GM105-456 4.56 Standard 4.56 & Up Full 10.5" Ring Gear Check Price
CRG-GM105-456-T 4.56 Standard 4.10 & Down Full 10.5" Ring Gear Check Price
CRG-GM105-488-T 4.88 Standard 4.10 & Down Full 10.5" Ring Gear Check Price
CRG-GM105-513-T 5.13 Standard 4.10 & Down Full 10.5" Ring Gear Check Price
CRG-GM105-538T 5.38 Standard 4.10 & Down Full 10.5" Ring Gear Check Price

GM 10.5" 14 Bolt Shaved Gears

All GM 14 bolt axles are low pinion (pinion gear enters below the axle center line) axles that use standard rotation gears. The following gears fit all GM 10.5" 14 bolt axles that have been shaved for improved ground clearance:

Part Number Gear Ratio Rotation Carrier Notes Pricing
CRG-GM105-373-S 3.73 Standard 4.10 & Down Shaved 10.05" Ring Gear Check Price
CRG-GM105-410-S 4.10 Standard 4.10 & Down Shaved 10.05" Ring Gear Check Price
CRG-GM105-456-S 4.56 Standard 4.56 & Up Shaved 10.05" Ring Gear Check Price
CRG-GM105-456-TS 4.56 Standard 4.10 & Down Shaved 10.05" Ring Gear Check Price
CRG-GM105-488-TS 4.88 Standard 4.10 & Down Shaved 10.05" Ring Gear Check Price
CRG-GM105-513-TS 5.13 Standard 4.10 & Down Shaved 10.05" Ring Gear Check Price
CRG-GM105-538-TS 5.38 Standard 4.10 & Down Shaved 10.05" Ring Gear Check Price

GM 10.5" 14 Bolt Gear Applications

The above GM 10.5" 14 Bolt gears fit the following axles and vehicle applications:

  • • GM 10.5" 14 Bolt Rear (1988 and Older Including '84-'85)
  • • GM 10.5" 14 Bolt Rear (1989 to 1998)
  • • GM 10.5" 14 Bolt (1999 and Newer)
  • • Chevy Avalanche 2500 (2002 to 2006)
  • • Chevy C20 3/4 Ton 2WD (1973 to 1988)
  • • Chevy C2500 3/4 Ton 2WD (1989 to 2000)
  • • Chevy C30 1 Ton 2WD (1973 to 1988)
  • • Chevy C3500 (1989 to 2002)
  • • Chevy Express Van 2500 3/4 Ton (1996 to 2015)
  • • Chevy Express Van 3500 1 Ton (1996 to 2015)
  • • Chevy Express Van 4500 (2009 to 2015)
  • • Chevy G20 3/4 Ton (1975 to 1995)
  • • Chevy G30 1 Ton (1979 to 1996)
  • • Chevy K20/K2500 3/4 Ton 4WD (1973 to 2000)
  • • Chevy K30/ K3500 1 Ton 4WD (1972 to 2000)
  • • Chevy P30 1 Ton Van (1997 to 2005)
  • • Chevy P3500 (1997 to 1999)
  • • Chevy Silverado 2500 3/4 Ton (1999 to 2015)
  • • Chevy Silverado HD 2500 3/4 Ton (1999 to 2015)
  • • Chevy Silverado HD 3500 1 Ton (2001 to 2013)
  • • Chevy Suburban 3/4 Ton (1973 to 2015)
  • • GMC C25/ C2500 3/4 Ton 2WD (1973 to 2000)
  • • GMC C35/ C3500 1 Ton 2WD (1973 to 2002)
  • • GMC G15/ G1500 1/2 Ton (1981 to 1987)
  • • GMC G35/ G3500 1 Ton (1979 to 1996)
  • • GMC K25/ K2500 3/4 Ton 4WD (1966 to 2000)
  • • GMC K35/K3500 1 Ton 4WD (1977 to 2000)
  • • GMC Savana 2500 3/4 Ton (1996 to 2015)
  • • GMC Savana 3500 1 Ton (1996 to 2015)
  • • GMC Savanna 4500 (2009 to 2015)
  • • GMC Sierra 2500 3/4 Ton (1999 to 2015)
  • • GMC Sierra 2500 HD 3/4 Ton (1999 to 2015)
  • • GMC Suburban 3/4 Ton (1973 to 2000)
  • • GMC Yukon 2500 3/4 Ton (1992 to 2015)
  • • GMC Yukon XL 2500 3/4 Ton (2006 to 2015)
  • • Torq Axle 3rd Members