{"product_id":"bm-shift-improver-kit-gm-th400-transmissions-20260","title":"B\u0026M Shift Improver Kit - GM TH400 Transmissions - 20260","description":"1965-1987 GM TH400, TH375 \u0026amp; TH475 Automatic Transmissions.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20260\u003cbr\u003e\u003cbr\u003eThe B\u0026amp;M® Shift Improver kits™ feature two options to recalibrating your 1965-1987 GM TH400, TH375 and TH475 automatic transmissions. First is the HEAVY DUTY set-up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET\/STRIP set-up. Be warned, this will deliver firm positive shifts you will feel, along with easily chirping the tires when shifting somewhat aggressively. This setting is recommend for high performance street\/strip use, or for competitive events when you want the hardest, quickest shifts possible from a shift improver kit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFeatures and Benefits\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e• Perfect for Towing or Street\/Strip Use\u003cbr\u003e• Eliminates Soft and Sluggish Shift\u003cbr\u003e• Recalibrates Stock Transmissions\u003cbr\u003e• Over 65 Years of B\u0026amp;M Quality\u003cbr\u003e• Eliminates Shift Overlap\u003cbr\u003e• Provides Crisp Shifts\u003cbr\u003e\u003cbr\u003e\u003cem\u003eFits 1965 to 1987 GM Turbo-Hydramatic 400, Turbo-Hydramatic 375 and 475 automatic transmissions\u003c\/em\u003e","brand":"B\u0026M","offers":[{"title":"Default Title","offer_id":48275468320995,"sku":"20260","price":167.1,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/0821\/9875\/files\/350d84e4696f786adf8e167bf9055a20.jpg?v=1771060547","url":"https:\/\/fastlanespares.co.nz\/products\/bm-shift-improver-kit-gm-th400-transmissions-20260","provider":"Fast Lane Spares","version":"1.0","type":"link"}