Product_description: ['<LI>This Is a Replacement for a Single Piston, Does Not Replace Entire Set.</LI><LI>High-Performance Forged 2-Stroke Pro-Lite Piston.</LI><LI>Dedicated Forging, Superior Strength/weight Ratio Utilizing Aerospace Alloy.</LI><LI>Race Proven Designs, Chosen by Top Race Teams, in All Forms of Racing.</LI><LI>CNC MacHined Optimal Cam Shape & Profile for Peak HP and Service Life.</LI><LI>Highest Quality, Alloy Pin, Consistently True and Durable.</LI><LI>Bore Size (Mm): 70.00</LI><LI>Stroke Size (Mm): 68.00</LI><BR></BR>Fits the Following Yamaha Models:<LI>IT250 1983 .</LI><LI>TRI Z 250 1985-1989</LI><BR></BR><LI><B>Please Note: The Image Displayed Is Representative of the Piston, However Circlips, Wristpins & Rings, as Well as the Specific Type of Piston Will Vary Based on Your Model.</B></LI>'] (Page 1)