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GM 8.875" 12 Bolt - Car
5.86 Nitro Ring & Pinion




Differential: GM 8-7/8" 12 Bolt - Car
Gear Ratio: 5.86
Pinion Splines: 30
Gear bolts: 12 (not included)
Manufacturer: Nitro Gear & Axle
Warranty: 2 Years



Nitro gears are manufactured from 8620 steel gear forgings in the same manufacturing facilities as GM, Dodge, Ford & Toyota. They are precision machined using computer controlled processes, heat treated, CNC triple-lapped and Rockwell tested for hardness. These extra steps ensure excellent fitment, ideal contact pattern and smooth, quiet operation.



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GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 3.42 Ratio, Nitro Ring & Pinion

12P GM 3.42 Ring & Pinion

Price: $249.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 3.73 Ratio, Nitro Ring & Pinion

12P GM 3.73 Ring & Pinion

Price: $249.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 4.11 Ratio, Nitro Ring & Pinion

12P GM 4.11 Ring & Pinion

Price: $249.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion (Fits 3.08-3.90 Case) GM 8.875", 12 Bolt -Car, 12P, 4.11 Ratio, 3 Series, Nitro Thick Ring & Pinion (Fits 3.08-3.90 Case)

12P GM 4.10 Thick Ring & Pinion

Price: $249.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 4.56 Ratio, Nitro Ring & Pinion

12P GM 4.56 Ring & Pinion

Price: $249.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 3.08 Ratio, Nitro Ring & Pinion

12P GM 3.08 Ring & Pinion

Price: $269.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 3.31 Ratio, Nitro Ring & Pinion

12P GM 3.31 Ring & Pinion

Price: $269.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 3.55 Ratio, Nitro Ring & Pinion

12P GM 3.55 Ring & Pinion

Price: $269.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 3.90 Ratio, Nitro Ring & Pinion

12P GM 3.90 Ring & Pinion

Price: $269.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 4.30 Ratio, Nitro Ring & Pinion

12P GM 4.30 Ring & Pinion

Price: $269.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 3.08 Ratio, Richmond Ring & Pinion

12P GM 3.08 Ring & Pinion

Price: $286.00
GM 8.875", 12 Bolt -Car, 12P, Thick Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 4.56 Ratio, Thick, Nitro Ring & Pinion

12P GM 4.56 Ring & Pinion

Price: $287.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 5.38 Ratio, Nitro Ring & Pinion

12P GM 5.38 Ring & Pinion

Price: $287.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P,3.73 Ratio, 4 Series, Nitro Ring & Pinion (Fits 4.10 & Up Case Only)

12P 3.73 Thin Ring & Pinion (Fits 4.10 & Up Case Only)

Price: $299.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 3.55 Ratio, Richmond Ring & Pinion

12P GM 3.55 Ring & Pinion

Price: $301.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 5.86 Ratio, Richmond Ring & Pinion

12P GM 5.86 Ring & Pinion

Price: $317.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 4.88 Ratio, Nitro Ring & Pinion

12P GM 4.88 Ring & Pinion

Price: $425.00
GM 8.875", 12 Bolt -Car, 12P, Ring & Pinion GM 8.875", 12 Bolt -Car, 12P, 5.13 Ratio, Nitro Ring & Pinion

12P GM 5.13 Ring & Pinion

Price: $425.00
   
 
GM 8.875" (8-78") 12 Bolt - Car Carrier Breaks:
2 Series: 2.73 & Down
3 Series: 3.08-3.90
4 Series: 4.10 & Up