Upgraded 1350 Pinion Yoke with Ubolt straps / We will NOT build any units with 1310 as they're known to break
Upgraded 300M Larger diameter Lower-shaft / soft radiused ends / 31 spline Input Yoke and 10 Spline for drop gears
Upgraded 300M 930 Output Flanges (Most Common Spec world wide)
Output Flanges 35 spline, NOT 31 spline that are known to break
Upgraded Polished n Ground 4.12 ring & pinion - (it is the STRONGEST tooth count!)
Billet Rear 6 bolt rear Cover w/ (7) ball deep groove ball bearings / competitors only have (6) balls
BLACK THERMAL COATED / dissipates the heat faster, easier to clean, not to mention it looks AMAAZING!

RTS supplies (1) FREE set of Drop gears with your order! Any Ratio on 4.12 chart
Email us for Complete drop gear ratio chart / Range from 2.20 - 7.10

C) Black Thermal Coat is Now STANDARD on ALL Units:

We are proud to say "We have never had an Unsatisfied Client Buying our Custom IRS Rear Ends"