Shift Improvement Kits FOR AUTOMATIC TRANSMISSIONS

  • PRODUCTS
  • INFORMATION
    • Shift Improver Kit
      B&M® - SHIFT IMPROVER KIT

      Performance made easy! The B&M Shift Improver Kit is a simple and affordable way to get the performance you have always wanted from your transmission. Choose between two configurations: Heavy Duty, or Street/Strip. With some simple hand tools and an afternoon, you can have 60 years of performance tuning built into your transmission. B&M transmission performance has never been so attainable.


      STAGE 1. HEAVY DUTY

      Firm, positive shifts without loss of passenger comfort for improved performance in all street vehicles. Recommended for normal passenger vehicles and tow vehicles.


      STAGE 2. STREET/STRIP

      Provides positive shifts for high performance street use or competitive events. This configuration is for the enthusiast who wants hard, fast shifts.


      • Recalibrate your transmission’s shift timing
      • Select the configuration that best suits your application
      • Provides well appointed, crisp shifts
      • Eliminates excessive shift overlap
      • Less wear and tear on your transmission’s clutches and bands
      Master Racing Overhaul Kit
      B&M® - MASTER RACING OVERHAUL KIT

      Includes all OEM gaskets, seals, bushings, and high performance friction materials for a complete high performance or racing overhaul. Note: transbrake body gaskets/components and installation instructions are not included.


      • Complete high performance or racing transmission overhaul
      • Includes only OEM valvebody gaskets
      • Instructions not included
      • Great for rebuilding
      • Sold as a kit
      Transpak™
      B&M® - TRANSPAK

      The next step up from the Shift Improver Kit is the TransPak. It has all the features in the Shift Improver Kit plus it provides additional driver manual control (GM TH400, 350, Ford C-6 & Chrysler Torqueflite only). Most stock automatic transmissions won’t downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear you’re in. With the TransPak, you can downshift at any speed, and you can hold the transmission in first gear to any speed you want! This is an asset when you’ve got a modified engine, and you want additional RPMs, are towing a trailer, or driving heavy loads downhill.


      STAGE 1. HEAVY DUTY

      For street rods, passenger vehicles, or heavy duty use. Firmer shift feel as compared to stock, but not harsh. Improves transmission performance and life dramatically without loss of comfort. Retains normal automatic operation when in drive.


      STAGE 2. HIGH PERFORMANCE STREET


      For maximum performance street use. All of the same features as the Heavy Duty configuration, but with faster shifts. Retains normal automatic operation when in drive.


      • Performance calibration and shift timing
      • Select the configuration that best suits your application
      • Improves transmission life by reducing heat
      • Additional manual control provided for lower gears
      Transkit™
      B&M® - TRANSKIT

      If you’ve got the time, we’ve got what you need! This kit allows you to perform a complete transmission refresh, plus upgrade to full B&M specifications! The kit contains parts and instructions that put 60 years of automatic transmission knowledge to work - for you. Special instructions include how to modify your case, pump, and other components to get top level performance. This ensures that you have all the tips and tricks built in to your transmission right from the start. Even if you have limited experience with automatic transmissions, rest assured all the required information is included to completely rebuild your transmission into a real performer.


      • Same quality components used in a B&M Street/Strip transmission
      • Includes B&M TransPak modification components
      • Includes all the necessary parts to convert your valve body to a full
      • B&M manual/automatic valve body
      • Refresh your entire transmission, improve shift action with key modifications along the way
      • B&M high performance friction materials
      • Drain plug kit included
      ShiftPlus™
      B&M® - SHIFTPLUS

      B&M’s ShiftPlus electronically recalibrates your transmission by reducing shift overlap, the time it takes shifting from one gear to the next, and also gives a quicker more positive upshift.. This dramatically improves the shift quality of your vehicle, making driving much more enjoyable. Also, firmer shifts reduce slippage and associated heat, increasing the reliability of your transmission. The best part of ShiftPlus is you can easily achieve all of this without disassembling your transmission!


      • Electronically recalibrate your automatic transmission!
      • Reduces slippage and heat
      • Install without removing the transmission pan or valve body
      • Transfer between stock and performance modes with the flip of a switch
      • 50 state emissions legal

    • Here at B&M, we find the term “slush box” extremely offensive when used in the context of an automatic transmission. If those two words are a fitting description of the shift quality in your vehicle, we are here to help. B&M offers a range of kits that will give your automatic transmission anything from a subtle improvement all the way to that race-car quality shift which B&M transmissions are famous for.


      B&M’s Transmission Kits modify an automatic transmission’s shift timing in order to increase shift firmness and in turn improve durability. This is because many OEM’s allow far too much shift overlap in their transmissions. With too much overlap comes not only that dreaded, disconnected, “Slushy” feeling when driving, but also decreased efficiency and durability because of excess heat.


      With a B&M Transmission Kit, you can reduce this overlap period, which has several benefits: Not only is the shifting action improved, but because less slippage is occurring you can notice improvements in city fuel economy. Finally, with less heat being generated by the transmission itself, there is less stress on the seals and clutches within the transmission, improving reliability.

      SHIFT IMPROVER KIT

      The B&M Shift Improver Kit is the easiest way to gain the performance you want out of your automatic transmission. With this kit you can choose between two modes of performance: Heavy Duty, or Street/Strip. The Shift Improver Kit is B&M’s most economical and simplest to install kit – all you need are some hand tools! In the space of an afternoon, you can turn your transmission into a B&M tuned performer.

      TRANSPAK

      The next step above B&M’s Shift Improver Kit is the TransPak. The TransPak has all the features found in the Shift Improver Kit, plus it provides additional manual control capabilities to the driver (GM TH 400, 350, Ford C-6 & Chrysler Torqueflite only.) Most stock automatic transmissions won’t downshift into low gear above 15 MPH, and automatically upshift at a predetermined speed no matter what gear you’re in. With the TransPak, you can downshift at any speed, and you can hold the transmission in first gear to any speed you want! A TransPak will allow you the control to do everything from rev-out a modified engine for maximum performance, to hold a tow vehicle in low gear while descending a grade.

      TRANSKIT

      60 years of transmission knowledge packed into a very small box! If you have the time, we’ve got the parts to transform your automatic transmission into a relative of the mighty Hydrostick. This is our top of the line transmission kit, and comes with full instructions on how to assemble your transmission to B&M specifications (part numbers 20229, 30229, 50231, and 10229 only.) These kits also include special directions on modifying your case, pump, and other components to provide you with all the science and knowledge gained from every specialty B&M transmission since 1953.

      SHIFTPLUS

      Electronic controls can be a double-edged sword — on one side, they make it very easy to change the attributes of a system without taking it apart, but the other side is that without extremely specialized knowledge and equipment they are impossible to change. B&M’s Shiftplus is here to help! The Shiftplus control box electronically recalibrates your transmission’s hydraulic system, reducing both slippage and heat. This improves the shift quality of your vehicle and also extends transmission life! The best part is that all of this takes place without ever having to remove the transmission pan or valve body. Every Shiftplus kit comes with a switch that allows the driver to control the mode of the transmission, choosing between stock or performance modes.