21989-07+.005 Pistons 103 Twncam .005

These Drag Specialties replacement pistons are specifically sized for 103-inch Twin Cam engines that have been bored to a +0.005 inch oversize. This slight oversize is often necessary during a rebuild to clean up minor cylinder wall imperfections while maintaining maximum sleeve thickness. The pistons are manufactured to precise tolerances to ensure a correct skirt-to-wall clearance, which is vital for quiet operation and long-term durability. By choosing Drag Specialties, technicians receive a reliable alternative to OEM hardware that integrates seamlessly with existing engine components. The kit includes all necessary rings and hardware. This product is sold as a pair.