Poly Performance DIY Ring and Pinion Gear Kits for Jeep JKs

The phrase, "do it yourself," isn't something you typically associate with a differential gear swap but the folks at Poly Performance don't see things that way. Their new ring and gear kits are packaged with backyard mechanics in mind.

San Luis Obispo, CA (February 13, 2009) - Poly Performance introduces high performance ring & pinion sets to boost torque and low-end power when using larger tires; and you can install them yourself!

With a simple ratio change, the Poly Performance gear sets reduce engine strain, improve fuel mileage, and provide more pulling power for uphill climbs and rock crawling. Gear sets are available in 5.38 ratio for Jeep Wrangler JK models, an optimum ratio for tires 37" and taller. Complete Installation Kits are available, including all shims, nuts, sleeves and other components to properly install both front and rear gear sets. The ring & pinion sets are compatible with stock and popular aftermarket lockers. Other gear ratios and applications will be available in the near future.

Each ring & pinion set is forged of high-strength 8620 steel, then CNC machined throughout with extra lapping for a central contact pattern and smooth, quiet operation. The computer controlled heat treatment process helps to ensure a long life and outstanding quality assurance.

Poly Performance has taken these high-strength ring & pinions one step further by providing full-color installation instructions with industry-leading detail. Each manual is designed for the Do-It-Yourself (DIY) enthusiast with actual photos and line drawings to make a proper installation with ease.

For more information about Poly Performance gear sets, visit www.polyperformance.com (keywords "Poly Performance Jeep JK Ring & Pinion ") or call 1-805-783-2060.

Part # Description
PPM-D44538FJK Poly Performance Jeep JK Rubicon 5.38 Ring & Pinion Gear Set (Front)
PPM-D44538RJK Poly Performance Jeep JK Rubicon 5.38 Ring & Pinion Gear Set (Rear)
PPM-D44JKFR Poly Performance Jeep JK Rubicon Dana 44 Front & Rear Ring & Pinion Installation Kit