The VERTEX TopEnd Piston Kit for YAMAHA Pro Replica is meticulously crafted to withstand the higher cylinder pressures of 4-stroke engines. Each VERTEX piston is forged from the highest quality aluminum alloy (2618) to endure internal engine pressures, ensuring durability and performance. To further reduce wear, every VERTEX piston is equipped with an MOS2 coating on the piston skirt. VERTEX is a trusted OEM for some of the largest motorcycle manufacturers, and numerous factory teams in MXGP rely on VERTEX for their remarkable performance. This comprehensive piston kit saves both time and money by including everything needed for a piston replacement. The kit comes with a piston, cylinder gasket set, and timing chain, ensuring a seamless installation process. The Pro Replica variant adheres to the original form with a forged piston, while the Pro HC version offers a forged special piston with higher compression, enhancing performance. With VERTEX’s proven track record and advanced manufacturing process, the VERTEX TopEnd Piston Kit is an ideal choice for both amateur and professional riders looking for a reliable and high-performing piston solution.