Standard Bore, High Compression Pistons with 10.6:1 Compression Ratio. Fits CVO Twin Cam 2007-2017 with 110ci Engine & 'S' Models with 110ci Engines. - S&S Oil Coolers - Universal Fitment * Get the Most Out

* Get the Most Out of engine

Idle un-affected

* Easy to build yourself with no specialty tools or crimping

* Flow Rate: 5

Standard Bore, High Compression Pistons with 10.6:1 Compression Ratio. Fits CVO Twin Cam 2007-2017 with 110ci Engine & 'S' Models with 110ci Engines. - S&S Oil Coolers - Universal Fitment * Get the Most OutFeatures & Benefits: * Use with performance exhaust, air cleaner, S&S 585 bolt in cams & EFI tune to produce massive horsepower gains. Tech Tips: * Will Not Fit Twin Cooled Models. * Pistons measure 3. 9975 when new. * . 0025 Clearance with stock 4. 00 bore. * Pistons may be slightly more noisy than stock. * Replacement Ring Set # SS940 0040. * Follow Ring End Gap & Piston to Cylinder Clearances as per the supplied Manufacturers Instructions. * Pull