Twin Cam 110" BIG BORE Kit 4" big bore bolt on cylinder and piston kit takes your. 96ci or 103ci motor to a full 110ci without removing the engine from the chassis. Complete top end gasket kit is included with the fitted cylinders and Wiseco Forged moly coated pistons. The 4" big bore cylinder and piston package increases the internal bore from 3-7/8" to 4, NO ADDITIONAL MACHINING NEEDED & CAN BE INSTALLED WITH THE MOTOR IN THE BIKE. The cylinder slips into the existing case bore without modification.Kit will add 7 cubic inches of displacement to a 103 for more torque throughout the RPM range. The kit includes front and rear cylinders and system-matched pistons with rings. The finished honed size of this bore cylinder is 4.005. The compression ratio is 10.5:1. Harley twin cam 110 BIG BORE KIT, 2007-17 Touring & Softail. The item "110 Big Bore bolt on kit 2007-17 Touring & Softail Twin Cam for 98&103" is in sale since Tuesday, August 24, 2021. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Big Bore & Top End Kits". The seller is "harleystuff2134t" and is located in Ilion, New York. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Croatia, Malaysia, Brazil, Colombia, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.