FREE SHIPPING TO USA!*exclusions apply
FREE SHIPPING TO USA!*exclusions apply
October 09, 2025 1 min read
Getting ready to do something really special with your 6.7L Powerstroke performance build??? A transmission upgrade might be just what you needed! The 4R100 has been proven in many racing applications (including in our dragster), for it's strength, ease of tuning, ease of rebuild, quick shifting, and it's aftermarket support. We make the swap effortless (sorta..) with our Billet 4R100 Rear Cover!
Check It Out! https://www.spemotorsport.com/products/6-7l-4r100-rear-cover

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