DMI XR3 4.12 Rearend
Rear Position, Single Shaft Axle Type, Differential Included, 4.12:1 Gear Ratio
The DMI design team used the latest computer F.E.A technology to develop and engineer the new XR3 rear end. The XR-3 utilizes an 8" 4.12 ring and pinion that saves more than 2.5 lbs over a conventional 10" gear. The rear is a direct replacement utilizing standard 10 spline gears commonly used in full size rears along with conventional length driveline components. The rear offers an additional 2" of fuel cell clearance and 1.75" of seat clearance. The ring and pinion has been used successfully in applications up to 800 horsepower on both dirt and pavement. This is an excellent choice for the RaceSaver 305 or 360 sprint car racer.
- Choose between internal coupler (Int) and swivel ball spline coupler (SS)
- 4.12 ring and pinion
- Heat Treated Steel Lower Shaft
- O-Ringed Rear Cover
- Jack Pad
- Increased Oil Reservoir
- Temperature Reducing Cooling Fins
- Billet Aluminum Front Bearing
- Breather Assembly
- Non Twist One Bolt Shifter Mount
- 3 quarts BullDog Blood Oil
- Sold each
Important Driveline Lengths when using XR-3 with a 40" Engine Setback
- Internal 10-10 Driveshaft – 29” w/ U-Joint Spring
- DMI Style Swivel Coupler Driveshaft – 26.5” w/ U-Joint Spring
- Winters Style Swivel Coupler Driveshaft – 27.5” w/o a U-Joint Spring
- Torque Tube – 27"
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Q & A
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