223070 - B&M; Shift Improver Kit; 1965-87 GM TH400/TH375/TH4745/M40

223070 - B&M; Shift Improver Kit; 1965-87 GM TH400/TH375/TH4745/M40


In Stock Now!

MSRP: $67.99 set
$60.99  set


WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

B&M; Shift Improver Kit; 1965-87 GM TH400/TH375/TH4745/M40

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 our 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 satisfied customers that have installed one in their transmissions!

Stage 1 Heavy Duty:
    For 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.

Both stages are included in this kit.

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

This product fits the following vehicle applications. Click to view individual years.

Product Specifications

Shipping Dimensions
  • Weight: 3 Lbs
  • Dimensions: 17" x 14" x 0"
  • Ship Type: Standard |
Emissions Compliance
  • Non-Emissions: This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included.
Product Information
B&M; Shift Improver Kit; 1965-87 GM TH400/TH375/TH4745/M40

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 our 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 satisfied customers that have installed one in their transmissions!

Stage 1 Heavy Duty:
    For 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.

Both stages are included in this kit.

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

Vehicle Fitment

This product fits the following vehicle applications. Click to view individual years.

Specifications

Product Specifications

Shipping Dimensions
  • Weight: 3 Lbs
  • Dimensions: 17" x 14" x 0"
  • Ship Type: Standard |
Emissions Compliance
  • Non-Emissions: This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included.


  • Product #:
  • SHIP TYPE:
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

This product fits the following vehicle applications. Click to view individual years.

Shipping Dimensions