B&M Shift Improver Kits

4.55 out of 5 stars 105 Customer Reviews

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.

Results 1 - 14 of 14

B&M Shift Improver Kits 30262

Shift Improver, Chevy, TH350, Each

Part Number: BMM-30262

4.72 out of 5 stars ( 25 )

Estimated Ship Date: Today

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B&M Shift Improver Kits 20260

Transmission Upgrade Kit, Shift Improver, GM, TH400, TH375, M40, Each

Part Number: BMM-20260

4.8 out of 5 stars ( 15 )

Estimated Ship Date: Today

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B&M Shift Improver Kits 70239

Transmission Upgrade Kit, Shift Improver, GM, 700R4, 4L60, Each

Part Number: BMM-70239

4.65 out of 5 stars ( 20 )

Estimated Ship Date: Today

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B&M Shift Improver Kits 40262

Transmission Upgrade Kit, Shift Improver, Ford, C-6, Each

Part Number: BMM-40262

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Today

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B&M Shift Improver Kits 50260

Transmission Upgrade Kit, Shift Improver, Ford, C-4, Each

Part Number: BMM-50260

5.0 out of 5 stars ( 3 )

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B&M Shift Improver Kits 40264

Transmission Upgrade Kit, Shift Improver, Ford, AODE, 4R70W, Each

Part Number: BMM-40264

Not Yet Reviewed

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B&M Shift Improver Kits 20261

Transmission Upgrade Kit, Shift Improver, GM, TH400, 3L80, Each

Part Number: BMM-20261

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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B&M Shift Improver Kits 50262

Transmission Upgrade Kit, Shift Improver, Ford, C-4, Each

Part Number: BMM-50262

2.33 out of 5 stars ( 6 )

Estimated Ship Date: Today

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B&M Shift Improver Kits 35265

Transmission Upgrade Kit, Shift Improver, GM, 200-4R, Each

Part Number: BMM-35265

5.0 out of 5 stars ( 2 )

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B&M Shift Improver Kits 70360

Transmission Upgrade Kit, Shift Improver, GM, 4L60E, Each

Part Number: BMM-70360

4.8 out of 5 stars ( 10 )

Estimated Ship Date: May 27, 2025 if ordered today

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Estimated Ship Date: May 27, 2025 if ordered today

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We recommend these similar substitute parts:

TransGo Performance Shift Kits 4L60EHD2

4.75 out of 5 stars ( 58 )

Estimated Ship Date: Today

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B&M Shift Improver Kits 10226

Shift Improver, Chrysler, 727, A-904, Each

Part Number: BMM-10226

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Today

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B&M Shift Improver Kits 10225

Shift Improver, Chrysler, 727, A-904, Each

Part Number: BMM-10225

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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B&M Shift Improver Kits 10025

Shift Improver, Ford, E4OD, Each

Part Number: BMM-10025

4.25 out of 5 stars ( 4 )

Estimated Ship Date: May 19, 2025 if ordered today

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Estimated Ship Date: May 19, 2025 if ordered today

B&M 10 Bolt Dana 60/70 Differential Cover 10314

5 out of 5 stars ( 4 )

Estimated Ship Date: May 19, 2025

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B&M Shift Improver Kits 40266

Transmission Upgrade Kit, Shift Improver, Ford, 4R70W, Each

Part Number: BMM-40266

Not Yet Reviewed

Estimated Ship Date: May 19, 2025 if ordered today

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Estimated Ship Date: May 19, 2025 if ordered today

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