Ultimate IRS - Mazda RX-7 FD3S Tubular Subframe Cradle
This is a complete bolt-in rear tubular subframe for the 1993-1995 Mazda RX-7 (FD3S) chassis. This is 100% chromoly, so it is not only lightweight but extremely strong. The bare stock stamped steel subframe is around 30 lbs, this bare subframe is 12 lbs heavier, weighing it at only 42 lbs. This small 12 pound weight gain is a small price to pay for the increase in chassis stability and strength. The stock subframes have been known to tear, especially when upgrading to an 8.8 rear end and welding in bars. This is available for use with Stock differential, Ford 8.8" differential, and Ford 9" as well. No matter what differential you chose the OEM control arm pickup points will still be in the factory locations. For guys who already have an 8.8 rear end, this subframe will work with existing Ronin 8.8 kits. So if you already have the Ronin kit, you can direct swap out this subframe for your stock modified one. You can then sell your modded 8.8 subframe and recoup some of the costs. If you