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NX9-HDR4 kit features ACT's most popular Heavy Duty pressure plate
Safely run with zero air pressure because of the internal jounce bumper
The CSF EcoBoost Mustang radiator is a true "Drop-in fit" design requiring no modifications to install
BM17-HDR4 kit features ACT's most popular Heavy Duty pressure plate
B&M Racing Shift Improver Kit (10225) _Slash-Cut NX9-HDR4 kit features ACT's mostThis B&M Shift Improver kit fits all 1971 1977 Chrysler, Dodge and Plymouth TF727 transmissions with 6 cyl and V8 engines, along with A 904 transmissions with V 8 engines. This kit recalibrates your automatic transmission for optimum performance, extended life by eliminating shift overlap and excess wear on clutches & bands due to slippage. You get two modes of performance to select from: Stage 1 Heavy Duty, or Stage 2 Street Strip. Stage 1 gives firm