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Synergy Manufacturing 5.38 Ring and Pinion Kit for 07-12 Jeep Wrangler Rubicon & Wrangler Unlimited Rubicon JK with Dana 44 Rear Axle

Description

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. A variety of ratios and vehicle applications are available soon.

Details

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.

Installation Notes

Installation Difficulty: