The King 330 Extended Outside Drive O.S.D. Swingarm Wide Tire Conversion Kit is the Ultimate Custom Modification for your Sportbike today. This Roaring Toyz Sportbike Fat Tire Rear End Conversion Kit is a true Bolt-On kit that requires no cutting,grinding or welding. The unique Outside Drive design allows for a centered 17x12" custom rear wheel without the use of a jackshaft. These swingarms are engineered not only for awsome looks but to be 100% functional as well. The KING330 Jackshaft Extended Swingarm Kits will stand up to any abuse you can throw their way. Put this Kit on your bike and ride it everyday. WE DO and you would not beleive how much attention we get with them. Go ahead treat yourself... its your turn!!! The O.S.D. is the best wide tire technology available for wide tire kits. The kit uses a wide offset front sprocket made from 8620 steel and heat treated to run a single chain from the countershaft sprocket to the rear sprocket. The front sprocket is supported by a outboard bearing housed in a very trick CNC machined 6061 billet aluminum cover that is bolted down to the engine cases and the frame for rigidity. This bulletproof design emulates car tire dragbike set ups from the last 3 decades and not only adds strength and function but looks insane too! This new wide tire technology eliminating the jackshafts previously used on 300 & 330 wide tire set ups adds huge advantages such as higher performance thru more power delivered to the rear wheel, better handling, smoother on/off throttle transitions, less parts to wear and break, easier maintenance and wheelbase lengths from 0-18" over stock. The new Roaring Toyz O.S.D. swingarm kits are available in single sided and double sided swingarm configurations and can be paired with any Performance Machine or other custom wheel available. Call Roaring Toyz today for more information on the benefits of the O.S.D. and to place your order now!! Now Available For 1999-2011 Suzuki Hayabusa, 2001-2008 Suzuki GSXR 1000, 2006-2011 Kawasaki ZX14, 2004-2005 Kawasaki ZX10, 2009-2011 Yamaha R1. We are developing kits for other models on a by order basis so if you do not see your bike and want one call and put your deposit down today!!