Engine Kits

B&M Shift Improver Kit - for GM

The B&M Shift Improver Kit is the easiest way to get the stout performance you've always wanted out of your automatic transmission - and you get two modes of performance to select from: Heavy Duty, or Street/Strip. It's B&M's least expensive and simplest to install kit. All you need are a few dollars and some hand tools! In the space of an afternoon, you can turn your transmission into a B&M-tuned unit! Just ask the thousands of satisified customers that have installed one in their transmissions!

Stage 1 - Heavy Duty
Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. Recommended for regular passenger vehicles.

Stage 2 - Street/Strip
Provides very positive shifts for high performance street use or for competitive events. This model is for the enthusiast who wants the hardest, quickest possible shift.

  • Provides crisp shifts on any stock automatic transmissions.
  • Elimination of soft sluggish shifts, shift overlap, and excess wear on clutches and bands due to slippage.
  • Improves transmission life.
  • Transmission removal not required.


This product is in the following categories:

HomeDrivetrainA/T Filters, Parts and Kits

Manufacturer:

B&M

Part #: 20260

B&M Shift Improver kit for the 65-87 Turbo-Hydro 400, 375, and M40 3-Speed automatic transmission
Price: $40.13
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Part #: 20261

B&M Shift Improver kit for the 88-94 Turbo-Hydro 400 (3L80) 3-Speed automatic transmission.
Price: $40.13
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B&M Shift Improver kit for the 68-81 TH350, TH375B, and M38. Not for the TH350C use B&M TransPak# 30235 for the TH350C applications.
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B&M Shift Improver kit for the 81-90 Turbo-Hydro 200-4R 4-Speed Automatic transmission.
Price: $40.13
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Part #: 70239

B&M Shift Improver kit for the 82-93 Turbo-Hydro 700-R4 4-Speed Automatic transmission.
Price: $47.83
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Part #: 70360

Shift Improver Kits - Chevrolet, GMC, Pontiac - '93-'02 4L60E Provides crisp shifts on any stock automatic transmissions
Price: $47.83
Quantity: