Check the listing for details. Wiseco Piston Kit Std Bore Honda CRF 250R 2004-2007 4829M07800. Condition: New. Listed at 165.97 USD. Honda CRF 250R (2004-2007) CRF 250X (2004-2007) Wiseco Part # 4829M07800 Std Bore 78MM Piston 12.9:1 Brand New in Factory Packaging Wiseco pistons are known for durability, longevity, and increased horsepower. Innovative forging design and piston skirt provides maximum horsepower and torque. What are the advantages to using Wiseco Pistons? All Wiseco Pistons are Forged from high silicon, low expansion aluminum alloy which offers superior strength, reduced weight, improved heat transfer and longer life. Forged reinforced dome features waffle design for improved heat transfer and additional strength. CNC computerized high-speed Diamond Turning Centers hold exact tolerances with no size variations. Closer wrist pin boss spacing eliminates wrist pin flex Ships out as soon as payment is received. Shipments to HI,AK and PR are shipped via USPS Priority. CHECK OUT MY EBAY STORE BY CLICKING ON RED STORE BOX HERE. Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items. Track Page Views With Auctiva's FREE Counter