{"product_id":"s-s-99-06-4-stroke-flywheel-assembly","title":"S\u0026S, 99-06 4\" stroke flywheel assembly","description":"Standard 4\" stroke.   Note: Engines with strokes exceeding 4\" may require S\u0026amp;S piston oiling jets and piston to jet clearance notches in the piston skirt to avoid contact.  Note: S\u0026amp;S crankpins allow the use of replaceable bearing races in the lower end of the connecting rods. The first generation of S\u0026amp;S crankpins; in use up to 2012; were 1.500\" diameter. The second generation crankpins; in use since 2013; have the larger 1.671\" OEM diameter crankpins. Now S\u0026amp;S \u0026amp; OEM crankpins are identical in diameter so now S\u0026amp;S parts can be used to rebuild stock H-D flywheels; something that previously was not possible since H-D rebuild parts were; and are; not available.  Note: Following is regarding 03-17 models. S\u0026amp;S has designed these flywheels to work with a Timken style sprocket shaft bearing; they will fit stock 99-02 model year and all S\u0026amp;S cases without modifications. Stock H-D 03-17 Twin Cam engines use the same sprocket shaft roller bearing as is used on the pinion shaft; a cost saving but weaker solution. It is possible to use the stock weak 03-17 sprocket shaft bearing kit (OEM H-D 24004-03B) with S\u0026amp;S flywheels in 03-17 stock cases. However; S\u0026amp;S feels this roller bearing will not take the side loads produced in a high performance motor. S\u0026amp;S will not honor any warranty claims in an application where the OEM 24004-03B\/24605-07 03-17 sprocket shaft roller bearing style bearing assembly is used. To upgrade to the pre-2003 style sprocket shaft bearing MCS 978517 JIMS conversion tool\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 99-06 Twin Cam (Excl. 2006 Dyna) (NU)\u003c\/p\u003e","brand":"S\u0026S","offers":[{"title":"Default Title","offer_id":54307764666695,"sku":"915173","price":2072.58,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/7812\/0519\/files\/915173k.jpg?v=1784474508","url":"https:\/\/www.chopperessentials.com\/products\/s-s-99-06-4-stroke-flywheel-assembly","provider":"Chopper Essentials Co.","version":"1.0","type":"link"}