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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

Features and Benefits:
•  Uses factory gaskets and rear main seal
•  Includes all required hardware
•  Easy bolt-on install with all the OE sensors used
•  Perfect combination of performance and reliability

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