Instruction Sheets for Part Number BMM-20260
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Transmission Upgrade Kit, Shift Improver, GM, TH400, TH375, TH475, Each
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Overview
B&M Shift Improver Kits
B&M Shift Improver kits are the easiest way to get the stout performance you've always wanted out of your automatic transmission. All you need are some hand tools and an afternoon, and you can turn your transmission into a B&M-tuned unit. Each kit has two stages to fit your needs: RV/Towing and Street/Strip.
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Instruction Sheets for Part Number BMM-20260
Some parts are not legal for use in California or other states with similar laws / regulations
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