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B&M Shift Improver Kits and Shift Plus

The B&M Shift Improver Kit 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 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
Part# Chevrolet, Buick, Olds, Pontiac, GMC Applications Price
20261 '88-'94 TH-400 (3L80)
20260 '65-'87 TH-400, 375 and M40
35265 '81-'90 TH-200-4R
70239 '82-'93 TH-700-R4/4L60
70360 '93-'01 4L60E
Part# Ford, Lincoln, Mercury Applications Price
40262 '67-'91 C6
40263 '80-'92 AOD
50260 '67-'69 C4
50262 '70-'82 C4
40264 '92-'95 AODE/4R70W
40266 '96-'99 4R70W
10025 '89-'97 E40D
Part# Chryser, Dodge, Plymouth Applications Price
10226 '66-'70 TF A-727
'66-'77 TF A-904 with 6 cyl. engine
'68-'70 TF A-904 with V8 engine
10225 '71-'77 TF A-727
'71-'77 TF A-904 with V8 engine

Please Note: Not all products are in stock at RaceTrans and will need to be ordered from B&M. Please allow for extra shipping time Drop shipping direct from B&M available.

Prices Subject to change and do not include shipping

ShiftPlus Electronic Shift Improver

ShiftPlus simply recalibrates your transmission's hydraulic system electronically. The ShiftPlus shift firmness not only makes driving more fun and pleasurable, but slippage and heat are reduced - extending the life of your transmission! Anyone can install a B&M ShiftPlus in minutes with a few simple hand tools. This new design allows you to improve the transmission's shifting performance without removing the transmission pan or valve body. The B&M ShiftPlus electronically enhances shift quality and is adjustable. A simple flip of the switch allows the transmission to operate in the performance mode. Flip it back and you are back to stock!

  • Installs in minutes.
  • Reduces slippage and heat!
  • 50 state emissions legal.
  • For late model automatic transmission equipped vehicles.


Part# Applications Price
70380 For GM rear wheel drive and 4wd trans code MT1 or M30 (RPO code found on sticker in glove box) '93-'98 Suburban, Tahoe, Blazer (C/K, S/T), pickup (C&K) 1500, 2500, 3500, Impala, Camaro, Firebird & '94-'98 Corvette.
70381 For Ford rear wheel drive and 4wd vehicles trans code D,E,P,U,H,L & V (found on plate on driver door post) '97 Expedition/Navigator, '95-'97 Explorer, '95-'97 pickup F-150, F-250, '94-'97 F-350, '94-'97 Mustang, Thunderbird & Cougar, '93-'97 Lincoln Mark VIII.

Prices Subject to change and do not include shipping