{"product_id":"unassembled-flywheel-set-4-1-2-stroke-for-81-99-big-twin-excl-twin-cam-nu","title":"Unassembled Flywheel Set 4-1\/2\" Stroke For 81-99 Big Twin Excl. Twin Cam NU","description":"\u003cp\u003eUnassembled \u0026amp; unbalanced flywheel set. Flywheels have the stock 8-1\/2\" diameter and are compatible with the flywheel scrapers found in both stock and S\u0026amp;S crankcases. Compatible with S\u0026amp;S Sprocket shaft assemblies: - 512403 70-99 B.T. (excl. Twin Cam) with SE \u0026amp; SL flywheels only. S\u0026amp;S Crankpin assemblies: - 512473 Std. 1.249\" OD. L81-99 B.T (excl. Twin Cam). Repl. 23961-80A - 512474 +.001\" 1.250\" OD. L81-99 B.T (excl. Twin Cam). Repl. 23974-87 - 512476 +.002\" 1.251\" OD. L81-99 B.T (excl. Twin Cam). Repl. 23975-87 - 512478 +.003\" 1.252\" OD. L81-99 B.T (excl. Twin Cam). S\u0026amp;S Pinion shaft assemblies: - 512406 L81-99 B.T. (excl. Twin Cam). STD. Repl. 24006-80; 24006-83 \u0026amp; 24006-87. (See ''Note 2'' for 90-99 models)Note 2: OEM 90-99 Evo Big Twin models are equipped with the stock one piece flywheel\/shaft design must use the S\u0026amp;S 90-99 Evo Big Twin pinion shaft conversion kit (MCS 904148). Note sprocket shaft: OEM sprocket shafts will not fit the 6ø taper that S\u0026amp;S flywheels have; apart from 81-85 stock style B.T sprocket shafts (OEM 23909-80 \/ MCS 502615 and 502616). These will fit S\u0026amp;S flywheels but do not have the keyway that S\u0026amp;S sprockets shafts have. The woodruff key eliminates spinning of the sprocket shaft in the left flywheel. Note: Special Order Product only. To order please contact your MCS sales representative.\u003c\/p\u003e\u003cp\u003e81-99 Big Twin (excl. Twin Cam (NU)\u003c\/p\u003e","brand":"S\u0026S","offers":[{"title":"Default Title","offer_id":56019899613563,"sku":"708931","price":494.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0648\/6881\/0972\/files\/moto-central-coming-soon_2f9f27c6-cb69-4340-9fa7-26de59c79221.jpg?v=1769175997","url":"https:\/\/motosuperstore.co.uk\/products\/unassembled-flywheel-set-4-1-2-stroke-for-81-99-big-twin-excl-twin-cam-nu","provider":"Moto Superstore","version":"1.0","type":"link"}