FJ Cruiser Parts and Accessories

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Toyota 8" Clamshell 4.88 Reverse Ring & Pinion 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.

  • 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.

Front Differential: Toyota 8" Reverse Clamshell
Ratio: 4.88 (Fits 3.91 & Up carrier case)
Manufacturer: Nitro Gear
Material: 8620 Steel Forgings
Warranty: 2 years
Pinion Spline Count: 29
# of Ring Gear Bolts: 10

Vehicle Applications:

  • 2003-2010 Toyota 4Runner
  • 2003-2010 Lexus GX470
  • 2003-2010 Toyota Surf
  • 2005-2010 Toyota Tacoma
  • 2007-2010 Toyota FJ Cruiser
  • 2002-2010 Toyota Prado 120
  • 2005-2010 Toyota Hilux
  • Fortuner

  • Model: T8S-488R-NG
  • Manufactured by: Nitro Gear & Axle

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