Item Description Vertex Piston Kit 175-23958B (Slightly used, great working condition) 96.94mm, 12.5:1 Compression Treated with a T-5 hardening and tempering cycle Piston skirts are coated with a molybdenum disulphite for increased life and faster break in time Improve power and torque across the entire rpm range Increase displacement, torque and peak horsepower Forged OE replacement piston and rings Fits Models: 2014-2017 YZ450F 2016-2018 YZ450FX 2016-2018 WR450F About Us: We specialize in high-quality used/new parts, carefully sourced and inspected to ensure reliability and performance. We take pride in providing top-notch parts at competitive prices, helping riders and mechanics find exactly what they need. Quality Assurance: Every part we sell is thoroughly inspected and tested before listing to ensure it meets our high standards. We aim to provide accurate descriptions and clear photos so you can buy with confidence. Be sure to double check the fitment of the part to ensure it will fit your vehicle. Customer Satisfaction: We stand behind our parts and strive to offer excellent customer service. It is our goal to provide FAST and FREE shipping. Orders placed within normal business hours are typically shipped out same day. If you have any questions about a listing or need assistance finding a part, feel free to reach out!