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B&M 20260 Shift Improver Kit for Automatic Transmissions

Free shipping on orders over $29.99

$58.86

$ 31 .99 $31.99

In Stock

About this item

  • Recalibrates your automatic transmission for crisp shifts, optimum performance, and extended life
  • Eliminates shift overlap and excess wear on clutches and bands due to slippage
  • Two kits in one box -- select Stage 1 for RV/heavy duty applications, or Stage 2 for street/strip applications
  • Installs easily with hand tools
  • Backed by the manufacturer with a 1 year limited warranty


B&M 20260 Shift Improver Kit for Automatic Transmissions


LC
Reviewed in the United States on April 14, 2024
Just what we needed for our project
AHE
Reviewed in the United States on August 30, 2023
This kit is for a th400 GM Transmission. It has two different kits in this kit. One for mild shift and the other for a stiffer/harder shift. I am using the mild shift kit and it works out great for street driving.
De
Reviewed in the United States on March 20, 2023
Highly recommend
Osby h.
Reviewed in the United States on January 8, 2023
Haven't driven car yet, will advise later
Patricia Vargo
Reviewed in Canada on September 23, 2019
firmer,perfect shifting for my turbo 400 behind my 454 big block gmc motorhome
Jerry Crow
Reviewed in the United States on June 7, 2019
Worked great. Made transmission shift great. Good instructions.
Anthony D.
Reviewed in the United States on March 8, 2018
wrong part just now opening it up double check pan shape and ask others who bought it before buying
Chris B
Reviewed in the United States on November 9, 2015
I installed this on my Th400 in my 1984 C10. It made my shifts considerably more noticeable and removed all slippage. I am 100% satisfied and would purchase it again. Also the instructions were super detailed and walked me straight through the process. Can't wait to take it to the track!
goarmy
Reviewed in the United States on August 7, 2014
I like the shift kit, but have not used it yet to see if it is all there and works.
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