As proven in the SPE Rail, the Ford 6.7L Powerstroke paired with the 4R100 transmission is a perfect combination of performance and reliability. Now there...View full product details
SPE 6R140 Proprietary Solenoid Body With the 6R and other solenoid controlled transmissions we do not use the terminology “shift kit”. It is not as...View full product details
SPE Billet input shaft. These shafts are machined and forged by Zeus himself using Thor's hammer. No but seriously these shafts are extremely tough. A...View full product details
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