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B&M Automatic Transmission Shift Improver Kit - 4R70W (96-99 GT, V6)

Item 394048
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Market Price $119.99 You Save 9% ($11.04)
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$108.95 (kit)

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    Features & Details

    • Shift Improver Kit
    • Smoother shifts
    • Street and strip ready
    • Install does not require transmission removal
    • Fits 1996-1999 V6 and GT Ford Mustangs with 4R70W Trans
    Clean, Chirping Shifts. This shift improvement kit from B&M will improve the shifting efficiency of your Mustang, giving it the ability to perform tire-chirping shifts with little to no effort. By improving the performance of the shift itself, the lifespan of the engine is also improved, as is its sound.

    A Breath of Life. B&M's shift improver increases the life of your transmission by speeding up the actuation of the shifting motion. Solid construction ensures the kit can resist wear and tear, as well as other forms of corrosion like rust. This upgrade is ideal for street and strip. After installation, users can expect the upgrade to last for years with little to no maintenance.

    No Trip to the Mechanic Needed. The shift improver is easy to install and does not require the removal of your vehicle's transmission to complete the upgrade. Everything can be done in an afternoon, and requires only basic hand tools. The package ships with all other hardware necessary to complete the job.

    Application. This BMR Shift Improver Kit is designed for 1996-1999 GT and V6 Mustangs with 4R70W transmissions.

    Fitment: 1996 1997 1998 1999 Details

    MPN# 40266

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Shift Kit
    Installation Info
    Tech Specs
    Will it fit my Mustang?

      Customer Photos

        Questions & Answers (4)

        4 Top Rated Questions

        Why doesnt it fit a 2000 mustang 99 have the same transmission ?

        • This kit is designed for the 96-99 Mustang GT/V6 models.

        Helpful (0)

        Will this work on my automatic 2004 mustang gt?

        • The B&M Shift Improver Kit is designed to work with 96-99 Mustang GT/V6 models with the 4R70W transmission. It will not work with a 2004 Mustang GT.

        Helpful (0)

        this won't work on a 95 GT 5.0, Auto. ? so do you have something that would?

        • For an 95 Mustang, you will need the B&M Shift Improver Kit - AODE & 4R70W (92-95 GT, V6), item # 394047, (

        Helpful (0)

        Can the shift improver kit be used on a mustang that already have a sct/x4 Bama tuned programmed on it.

        • They can be used at the same time, but you can save money and give Bama a call as they can amend your tuner to include the features of this shift improver kit.

        Helpful (0)
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          Customer Reviews (2) Write a Review

          Overall Rating 4

          out of 5 stars

          Installation Time:Afternoon

          • Performance Gain 4.5 4.5
          • Fit 5 5

          • 4/5

            Installation Time: Afternoon

            September 13, 2017

            B M Shift Improved Kit 4R70W

            Awesome kit ! Not a bad install as long as u oh follow the directions that come with kit and it's a noticeable feel shod us are crisper love it I will recommend this to my friends for their 4r70w trans


            Year: 1998 Submodel: GT

            Helpful (9)

          • 4/5

            November 14, 2016


            Great product! Improves the stick setup! Awesome upgrade for the 4r70w transmission


            Year: 1996 Submodel: V6

            Helpful (9)

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