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Double Black Offroad

JT Dana Spicer 44 Ring & Pinion Gear Set 4.56 Ratio Nitro Gear


Nitro Ring & Pinions are among the best in the industry. By using better materials, machining, heat treating and lapping process, Nitro can ensure a strong, quiet running, long lasting setup. Every new application is put through multi point inspections and actually installed and set up by Nitro's in-house differential experts to ensure excellent fitment and easy setup. At Nitro we see strive to meet consumer demand for new ratios and applications, and we are continually developing new products to stay ahead of the competition.

Product Details & Specs
  • Precision machining & heat treating processes ensure strength and excellent fitment.
  • CNC gear lapping ensures ease of installation, excellent contact patterns and a quiet running setup.
  • Rapidly growing application range to meet new demands
  • Street or stip, track or trail - you can depend on Nitro.

Differential: Dana Spicer 44 Standard Rotation
Ratio: 4.56
Tooth Count: 41-9
Manufacturer: Nitro Gear
Material: 8620 Steel Forgings
Warranty: 2 years
Pinion Spline Count: 26
Ring Gear Bolt Count: 10 (not included)

Vehicle Applications:

1948-1974 Ford F100 1/2 Ton Pickup
1948-1974 Ford F150 1/2 Ton Pickup
1972-1977 Ford Bronco
1986 Jeep CJ7
1997-2006 Jeep Wrangler TJ
2005-2006 Jeep Unlimited LJ
1986-1992 Jeep Comanche MJ Metric Ton
1987-1990 Jeep Cherokee XJ
Jeep J10 Pickup
Jeep J20 Pickup
Jeep Wagoneer
Jeep Grand Wagoneer
Jeep Cherokee FSJ

Shipping & Returns
When shipping denotes a $0 value, team will email you a freight quote, it does NOT mean freight is $0. You will receive a freight estimate ASAP which you can choose to accept (complete the purchase), or deny, (abandon purchase). Shipping will be calculated at checkout using the best available freight based on your location. Some large items and or oversized items can be purchased and the Double Black team will email you within 24 hours with a seperate freight invoice.
Downloads & Manuals