{"product_id":"3-to-4-speed-conversion-kit-for-45-flathead-mcs-samwel-971589","title":"3 to 4-speed conversion kit for 45\" Flathead","description":"Will enable you to turn the stock 45\" 3-speed transmission into a 4-speed. 1, 2, 3 are smaller and 4th gear is identical to OEM ratio to get closer to the optimum RPM (Torque) at different speeds. Fits 3-speed 45\" (750cc) Side Valve models. 41-46 shift pattern. Can be used with later models when converted to footshift or the tankshift pattern is converted to 41-46 style. Note: The stock transmission side cover (kickstart cover) must be machined to accept the larger first (low) gear. Optionally a special 4-speed transmission side cover is separately available as 971591.","brand":"Mcs Samwel","offers":[{"title":"Default Title","offer_id":43567133130815,"sku":"mcs_samwel_971589","price":1009.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3213\/0367\/files\/mcs_samwel_971589_b.jpg?v=1784722397","url":"https:\/\/vaultmoto.com\/products\/3-to-4-speed-conversion-kit-for-45-flathead-mcs-samwel-971589","provider":"VaultMoto","version":"1.0","type":"link"}