504564 Replacement XL1200 cast piston kit. +.030"

This +0.030-inch oversize MCS replacement cast piston kit suits 1988-2003 XL1200 Sportster engines requiring a moderate overbore. With the standard 9:1 compression ratio, these cast pistons restore factory-correct performance and are well known for their low expansion rate and substantial cost savings over forged OEM units. Each piston includes one wrist pin and two wrist pin clips, while piston rings must be purchased separately. The +0.030-inch oversize addresses more significant cylinder wear, making it suitable for higher-mileage engines. Professional installation with component compatibility verification is essential. Standard break-in procedures ensure proper ring seating for a dependable XL1200 rebuild.