{"product_id":"wavetrac-lsd-for-porsche-915-18t-spline-with-7-31-speedo-drive-provision-911-930-1974-1977","title":"Wavetrac LSD for Porsche 915 18T Spline with 7:31 Speedo Drive Provision (911 \u0026 930 1974-1977)","description":"\u003cp\u003eA limited slip differential for the Porsche 915 gearbox in its 18-tooth coarse spline form, in the version with the 7:31 speedometer drive provision, as fitted to the 18-tooth 915 cars (911 and 930 Turbo, 1974-77) with the 7:31 speedo drive. It keeps the power going to the rear wheel with grip, so a 911 or 930 can be driven out of a slow corner without the inside wheel spinning up.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFor the 915 gearbox, 18-tooth coarse spline with 7:31 speedo drive provision\u003c\/li\u003e\n\u003cli\u003e18-tooth 915 cars (911 and 930 Turbo, 1974-77) with the 7:31 speedo drive\u003c\/li\u003e\n\u003cli\u003eDrive stays on the gripping rear wheel\u003c\/li\u003e\n\u003cli\u003e9310 alloy steel gears, case-hardened billet body, ARP fasteners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e40.309.141WK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eAutomatic torque-biasing limited slip differential (helical gear)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGears\u003c\/th\u003e\n\u003ctd\u003e9310 alloy steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiff body\u003c\/th\u003e\n\u003ctd\u003eMachined from case-hardened steel billet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFasteners\u003c\/th\u003e\n\u003ctd\u003eARP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBias plates\u003c\/th\u003e\n\u003ctd\u003eCarbon fibre as standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMade in\u003c\/th\u003e\n\u003ctd\u003eUSA, by Autotech Driveline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGearbox\u003c\/th\u003e\n\u003ctd\u003ePorsche 915, 18-tooth coarse spline, 7:31 speedo drive provision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ctable class=\"fitment-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eVersion\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e911\u003c\/td\u003e\n\u003ctd\u003e915, 7:31 speedo drive\u003c\/td\u003e\n\u003ctd\u003e1974-1977\u003c\/td\u003e\n\u003ctd\u003eRear axle\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Wavetrac","offers":[{"title":"Default Title","offer_id":57513846833532,"sku":"40.309.141WK","price":2028.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/9208\/4867\/files\/wavetrac-40-309-141wk-wavetrac-lsd-for-porsche-915-18t-spline-with-7-31-speedo-dri-1.png?v=1790682421","url":"https:\/\/fdracing.co.uk\/products\/wavetrac-lsd-for-porsche-915-18t-spline-with-7-31-speedo-drive-provision-911-930-1974-1977","provider":"FD Racing","version":"1.0","type":"link"}