View our Specials! Coupon Code: SaveIn2026
Looking for aftermarket parts to modify or upgrade your 1981 GMC C1500 with final drive gears? At Tunersports.com we carry a huge selection of the top name brand performance final drive gear parts and accessories.
 IN STOCK - DROPSHIPS YG GM12T-308Yukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacti... Yukon Gear High Performance Gear Set For GM 12T in a 3.07 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $454.89 |
 IN STOCK - DROPSHIPS YG GM12T-342Yukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacti... Yukon Gear High Performance Gear Set For GM 12 Bolt Truck in a 3.42 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $454.89 |
 IN STOCK - DROPSHIPS YG GM12T-373Yukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacti... Yukon Gear High Performance Gear Set For GM 12 Bolt Truck in a 3.73 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $454.89 |
 OUT OF STOCK YG GM12T-373TYukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacti... Yukon Gear High Performance Thick Gear Set For GM 12 Bolt Truck in a 3.73 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $454.89 |
 IN STOCK - DROPSHIPS YG GM12T-411Yukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacti... Yukon Gear High Performance Gear Set For GM 12 Bolt Truck in a 4.11 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $454.89 |
 OUT OF STOCK YG GM12T-411TYukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacti... Yukon Gear High Performance Thick Gear Set For GM 12 Bolt Truck in a 4.11 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $454.89 |
 IN STOCK - DROPSHIPS YG GM12T-456Yukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacti... Yukon Gear High Performance Gear Set For GM 12 Bolt Truck in a 4.56 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $454.89 |
 IN STOCK - LOW YG GM12T-456TYukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacti... Yukon Gear High Performance Thick Gear Set For GM 12 Bolt Truck in a 4.56 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $454.89 |
 IN STOCK - DROPSHIPS YG GM12T-513Yukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacti... Yukon Gear High Performance Gear Set For GM 12 Bolt Truck in a 5.13 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $523.89 |
 IN STOCK - DROPSHIPS ZG GM12T-308USA Standard Ring & Pinion Gear Set For GM 12 Bolt Truck in a 3.08 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $440.89 |
 IN STOCK - DROPSHIPS ZG GM12T-342USA Standard Ring & Pinion Gear Set For GM 12 Bolt Truck in a 3.42 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $387.89 |
 IN STOCK - DROPSHIPS ZG GM12T-373USA Standard Ring & Pinion Gear Set For GM 12 Bolt Truck in a 3.73 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $416.89 |
 OUT OF STOCK ZG GM12T-373TUSA Standard Ring & Pinion Gear Set For GM 12 Bolt Truck in a 3.73 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $387.89 |
 IN STOCK - DROPSHIPS ZG GM12T-411USA Standard Ring & Pinion Gear Set For GM 12 Bolt Truck in a 4.11 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $387.89 |
 OUT OF STOCK ZG GM12T-411TUSA Standard Ring & Pinion Thick Gear Set For GM 12 Bolt Truck in a 4.11 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $387.89 |
 IN STOCK - DROPSHIPS ZG GM12T-456USA Standard Ring & Pinion Gear Set For GM 12 Bolt Truck in a 4.56 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $387.89 |
 IN STOCK - DROPSHIPS ZG GM12T-456TUSA Standard Ring & Pinion Thick Gear Set For GM 12 Bolt Truck in a 4.56 Ratio 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1986 GMC C1500 Base / High Sierra / Sierra Classic $390.89 |