4-inch Sidewinder Big Bore Kit - Silver - Dyna, Softail, Touring

【S&S Cycle 910-0642 4" Sidewinder Big Bore Kit Silver Dyna Softail Touring Engine Parts Plot】
■Product Description Inspired by Pro Stock drag racing engines, this updated big bore kit utilizes a ductile iron liner encased in cast aluminum for optimal heat transfer and performance. This kit requires no machining, rebalancing, or engine removal. ■Compatible Models Harley-Davidson/Harley Davidson Dyna Family (1999-2005) Softail Family (1999-2006) Touring Family (1999-2006) ■Specifications Color: Silver Finish (Surface Treatment): Painted Remarks: Largest cylinder diameter that can be installed on the genuine crankcase without modification. Included: Cylinder & Piston Set, Piston Ring Set, etc. ■Notes *Images are for illustration purposes only. May include products with different sizes or colors. Product design and specifications are subject to change without notice. Please be aware. *Part number changed from 910-0596. *Not applicable to 2006 Dyna and Trike models.