Wiseco Tracker Series 1340 Evo Flat Top 8.51 CR Piston Kit

The Wiseco Tracker Piston Kit (MPN: K0215P1) is engineered for Harley-Davidson Evolution Big Twin 1340cc engines, providing a flat-top dome design with an 8.5:1 compression ratio (which can increase to 9.5:1 with Screamin' Eagle Heads). These pistons are designed for a +.010 oversize bore (actual bore of 3.508 inches) and a 4.250-inch stroke. Each piston features Wiseco's ArmorGlide skirt coating, a proprietary process that reduces friction, improves durability, and extends piston life. Key specifications include a displacement of 1345cc, a -1.5cc dome volume, and valve pocket depths of -.167 inches for both intake and exhaust valves (with 2.000-inch diameters). This kit is ideal for engine rebuilds or performance upgrades requiring new pistons.