Trail-Gear 304621-1-KIT Features:

Made from tool-grade 8620 steel and heat-treated for maximum strength and wear resistance, these fully built 29-Spline Super Finish 3rd members include all new parts and are ready to drop into your axle. These third members feature top-quality Super Finish 29-Spline ring & pinion gears, and your choice of lockers. The ring and pinion gears are treated with the REM® Isotropic Super Finishing (ISF®) process, which removes the microscopic peaks in the material and creates a surface on the ring and pinion gears with a roughness of less than 10 µin Ra! This means that there is less friction between the gears, reducing wear by 95% and allowing the gears and bearings to run cooler and last longer. The gear teeth are cut using Gleason CNC hobbing machines and cutters. V6 units feature larger OEM style V6 gear sets with a longer pinion gear. Each unit is set up with solid pinion spacers for long gear life. A Trail-Safe 29-spline pinion seal is provided at no extra charge. High-pinion sets also include a high-pinion oil slinger. Quadruple-drilled flange covers will fit most Pickup/4Runner/Tacoma driveshaft patterns (see specifications). A dust shield is pre-installed onto the flange. There is no break-in period required. This product is for Toyota 8" solid axles only and will not fit 7.5" IFS front axles.

• Fully built Super Finish 3rd members using all new parts – no used housings or internal components
• Made from tool-grade 8620 steel and heat-treated for maximum strength and wear resistance
• 29-Spline pinion spline is 7% larger in diameter than the 27-spline for increased strength
• Available in 4.88 & 5.29 ratios for 4-cyl, V6, & high pinion applications
• Requires Ring & Pinion Setup kit to complete the installation into your existing differential housing
• Gear teeth are cut using Gleason CNC hobbing machines and cutters.
• No break-in period
• Less friction
• Reduced wear allowing bearings and gears to last longer
• Treated with REM® Isotropic Super Finishing (ISF®) process
• The REM® Isotropic Super Finishing (ISF ®) process removes the microscopic peaks in the material and creates a surface on the ring and pinion gears with a roughness of less than 10 µin Ra! This means that there is less friction between the gears, reducing wear by 95% and allowing the gears and bearings to run cooler and last longer
• Non-directional surface that increases lubricant retention on the gear surface, reducing lubrication requirements
• Flange is Quadruple drilled with the most popular Pickup/4Runner & Tacoma Patterns:
  
  • 66mm x 66mm x 11mm (Tacoma)
  • 60mm x 60mm x 10mm (Pickup/4Runner and TG Heavy Duty Driveline)
  • 60mm x 68.3mm x 10mm
  • 61.5mm x 70mm x 10mm
• Dust shield pre-installed onto flange
• High-pinion sets also include a high-pinion oil slinger
• Includes Trail-Safe Pinon seal & nut
• For Toyota 8" solid axles only. Will not fit 7.5" IFS front axles.