Std Pistons with 10.75:1 Compression Ratio. Fits Big Twin 2007-2017 with 103ci & Big Bore 96ci to 103ci Twin Cam Engine. - CP Carrillo Pistons Handlebars & Risers H-D * The Co-molded GELcore is

* The Co-molded GELcore is the largest comfort advancement in motorcycle seating since the creation of the suspension

and bolts to your bike without any modifications

* Not designed for use with 21″ or larger wheels

* Bolts directly to stock header pipes

* Designed as a Bolt-In Cam for 107ci or 114ci M8 Engines with Stock Compression

Std Pistons with 10.75:1 Compression Ratio. Fits Big Twin 2007-2017 with 103ci & Big Bore 96ci to 103ci Twin Cam Engine. - CP Carrillo Pistons Handlebars & Risers H-D * The Co-molded GELcore isFeatures & Benefits: * ID # 6437 * Bore = 3. 875 * Stroke = 4. 375 * Fully CNC machined * Balanced to + 1 gram * Double forced pin oilers * Forged from high strength 2618 alloy * Designed for maximum performance, horsepower and reliability * Complete kit includes two pistons, ring sets, wrist pins and clips Tech Tips: * Suggested additional purchase top end gasket kit # CG C9147 * Follow ring end gap and piston to cylinder clearances as per the