{"product_id":"final-drive-gears-3-58-ratio-gt86-brz","title":"Rear Differential - Final Drive - Various Ratios - Weir Performance - GR86, GT86 \u0026 BRZ, JZX90 \u0026 JZX100","description":"\u003cp\u003eCrown Wheel \u0026amp; Pinion Set for GR86, GT86 \u0026amp; BRZ\u003cbr\u003e\u003cbr\u003eWeir final drive gears are CNC machined and lapped for quiet operation!\u003c\/p\u003e\n\u003cp\u003eThe high quality ring and pinion gear set is shot peened, a process which further strengthens the gears and adds durability.\u003c\/p\u003e\n\u003cp\u003e As a result, we are proud to offer enthusiasts the best final drive gears on the market today.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is a final drive gear set?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe final drive ratio is the final gearing between your transmission and the driven wheels. By changing it, you can affect the performance of your car.\u003c\/p\u003e\n\u003cp\u003eA lower number final drive ratio will lead to less torque at the wheels but a higher top speed.\u003c\/p\u003e\n\u003cp\u003eA higher number offers more torque at the wheels, closes the gear ratios, and a lower top speed.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe standard ration for a GT86 \u0026amp; BRZ is 4.1\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBy changing your final gear ratios, you can optimise the car for different applications.\u003c\/p\u003e\n\u003cp\u003eeg: 1, GT86 but want more acceleration and closer gear ratios to keep the engine in the correct rev band - use a 4.30, 4.56 or 4.88.\u003c\/p\u003e\n\u003cp\u003eeg: 2 GT86 automatic cars from the factory have very high gear ratios, 4th in the auto is the same ratio as 5th in the manual car. Use a 4.56 or 4.88 to improve acceleration.\u003c\/p\u003e\n\u003cp\u003eeg: 3, Forest rallying requires close ratios and usually only a low top speed - use a 4.88 or 5.30.\u003c\/p\u003e\n\u003cp\u003eeg: 4, cars using a gearbox conversion where a lower ratio is required - use a 3.58.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003e \u003c\/strong\u003eYou will also need to replace the following parts when installing the final drive. These can be found in the Drivetrain section.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca title=\"GT86 drive pinion nut\" href=\"\/products\/rear-drive-pinion-nut-gt86-brz\" target=\"_blank\" data-mce-href=\"\/products\/rear-drive-pinion-nut-gt86-brz\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGT86 Rear Drive Pinion Nut\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"GT86 rear diff - front oil seal\" href=\"\/products\/rear-diff-front-oil-seal-gt86-brz\" target=\"_blank\" data-mce-href=\"\/products\/rear-diff-front-oil-seal-gt86-brz\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGT86 Rear Diff Front Oil Seal\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"GT86 rear diff - crush tube\" href=\"\/products\/rear-diff-crush-tube-gt86-brz\" target=\"_blank\" data-mce-href=\"\/products\/rear-diff-crush-tube-gt86-brz\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGT86 Rear Diff Crush Tube\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Weir","offers":[{"title":"4.30","offer_id":31404931350641,"sku":"WP-T8-430 Ratio","price":489.0,"currency_code":"GBP","in_stock":true},{"title":"4.56","offer_id":31404931383409,"sku":"WP-T8-456 Ratio","price":489.0,"currency_code":"GBP","in_stock":true},{"title":"4.875","offer_id":31404931416177,"sku":"WP-T8-488 Ratio","price":489.0,"currency_code":"GBP","in_stock":true},{"title":"5.30","offer_id":31404931448945,"sku":"WP-T8-5.30 Ratio","price":489.0,"currency_code":"GBP","in_stock":true},{"title":"3.58","offer_id":31404931481713,"sku":"WP-T8-3.58 Ratio","price":489.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0054\/9099\/9409\/products\/Weir-Final-Drive.jpg?v=1582883381","url":"https:\/\/www.fensport.co.uk\/products\/final-drive-gears-3-58-ratio-gt86-brz","provider":"Fensport Performance","version":"1.0","type":"link"}