{"product_id":"suncoast-coa-12806-300m-ringless-alloy-input-shaft-12-7-8-turbo-splines","title":"Suncoast 300M Ringless Alloy Input Shaft, 12-7\/8\" - Turbo Splines","description":"\u003cp\u003e \u003c\/p\u003e\n\n\u003cp class=\"page-title\"\u003e\u003cstrong\u003e300M RINGLESS ALLOY INPUT SHAFT, TURBO SPLINES, 12-7\/8\" FITS 1.69, 1.76, 1.80, 1.89, 1.96, 2.03\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp class=\"page-title\"\u003e \u003c\/p\u003e\n\n\u003cp class=\"page-title\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e(REQUIRES COA-12814, 12815, 12816A, 12816B PUMP)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003eThe Coan Racing COA‑12806 300M Ringless Alloy Input Shaft (Turbo Splines, 12-7\/8″) is a premium drivetrain upgrade engineered for GM Powerglide transmissions utilizing turbo-spline torque converters across a range of low-gear ratios (1.69 to 2.03). Constructed from high-strength 300M alloy, this robust shaft delivers exceptional tensile strength and fatigue resistance to handle the rigors of high-horsepower applications. Its innovative ringless design features mid-shaft bushing journals, eliminating the need for ring-type input shafts and enabling compatibility with cooling circuit-equipped pumps, while significantly reducing flex under load.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003eThe COA‑12806 installs cleanly into cases calibrated for the specified ratios. It does require pairing with Coan’s pumps (COA‑12814, 12815, 12816A\/B) to ensure proper pump interfacing, but it offers a seamless, high-strength drop-in solution for racers and performance builders seeking enhanced durability, cooling capability, and drivetrain confidence.\u003c\/p\u003e","brand":"Suncoast Performance","offers":[{"title":"Default Title","offer_id":48219452801265,"sku":"COA-12806","price":525.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/1344\/3057\/files\/300M-Ringless-Alloy-Input-Shaft_-12-7-8_-Turbo-Splines-Suncoast-Performance-151323538.jpg?v=1779831730","url":"https:\/\/tamelessperformance.com\/products\/suncoast-coa-12806-300m-ringless-alloy-input-shaft-12-7-8-turbo-splines","provider":"TAMELESS PERFORMANCE","version":"1.0","type":"link"}