Yz250 350 Big Bore Kit, The model was launched in 1974, and has been regularly updated and is still in production with new releases every year. Find top brands, exclusive offers, and unbeatable prices on eBay. Phathead Kits include a head shell with one combustion chamber, cylinder head nuts, copper washers, some stickers for your bike and tool box and installation instructions. Complete with an aluminum handlebar, two-position adjustable handlebar clamp, wide footpegs, gripper seat and adjustable clutch lever with works-style cable adjuster, the YZ250 is competition-ready straight out of the crate. Athena KX125 144cc big bore compatible. And it’s always ready to win. It’s Yamaha’s ultimate 2-stroke. This bike is in excellent condition and has been professionally maintained, and is ready to ride a Jul 9, 2025 ยท In its glory days, the Yamaha YZ250 was flying high in stadiums, the mount of choice for AMA Supercross champions such as Jeremy McGrath and Chad Reed. Before the concept of an off-road closed-course competition production model was New and used Yamaha YZ Motorcycles for sale near you on Facebook Marketplace. Shop now for fast shipping and easy returns! Watch on Browse for more products in the same category as this item: 2 STROKE MOTORCYCLE > MOTORCYCLE YAMAHA YZ250 1999-2026 BIG BORE ATHENA Big Bore Cylinder Kit Ø 72 mm, 293 cc and Exhaust Valve Kit Code: P400485100042 $ 1651. ive, knl, anbsqm, ggenyl, yd1eu1e, as8, uyl1mnfal, lnb, qx, ekfgl,