Part Number 24080B Forged big bore piston kit. New T-box forging, shot peened dome surface, and DLC coated wrist pin Kit includes: Piston, rings, pin, clips When it comes to power and performance, Vertex pistons are hard to beat. Forged from the highest quality 2618 aluminum alloy, Vertex pistons are perfectly suited to handle the rigors and high pressures of today's modern 2-stroke / 4-stroke engines. Plus, to aid in the break-in process and reduce wear, every Vertex piston utilizes a unique Molybdenum Disulphide (MOS2) coating on the piston skirt. Fits: 2015-16 Honda CRF250R Cylinder Diameter (mm): 76.80 Displacement (cc): 250.00 Piston Diameter (mm): 76.77 Standard Bore Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Vertex Replica Piston Kit Part Number 24080B Fitment Type Unit Sale Qty Kit Style Material Color Size Finish Position Functional Length Cable Sleeve Length Cable Sleeve Travel Driver Seat Length Passenger Seat Length Driver Seat Width Passenger Seat Width Piston/Cylinder Size Piston Size Added Cylinder Stroke Volume Final Engine Displacement Exhaust Configuration Muffler Size Muffler End/Tip Style Windshield Height Windshield Width Handlebar Diameter California Air Resource Board Compliance FALSE Product Disclaimer Items Included Fitments