Nitro Gear Package Kit

Part# GPDURAMAX-3.42


WARNING: Cancer and Reproductive Harm - www.P65Warnings.Ca.Gov

Nitro Gear Package Kit

Fits 2001-2019 Chevy/GMC 2500HD/3500HD 4WD


DmaxStore Notes:

  • Rear ring gear may interfere with stock and some aftermarket differential covers due to larger 11.8" ring gear size.
  • Rear aftermarket gear set is far superior than your stock 11.5" gear set. These Nitro Gears are a true 11.8" diameter gear set and are a direct replacement for your 11.5" factory gear.


Nitro Gear Packages for your 2001-2019 Duramax 4WD . Available in 3.42, 3.73, 4.11, 4.30, 4.56, 4.88, and 5.13 ratios.


  • Nitro front ring & pinion
  • Nitro front Master Install Kit
  • Nitro rear ring & pinion
  • Nitro rear Master Install Kit