New Piston Kit Size A 76.95Mm Compatible With 2001-2013 Yamaha Yz250f Wr250f Gas Gas Ec-F 250 249Cc

CROSS REFERENCE PART NUMBERS:
• Yamaha 5NL-11631-00-00
• Yamaha 5NL-11631-10-00
• Yamaha 5NL-11631-20-00
• Pro-X 01.2406.A

ITEM SPECIFICATIONS:
• Component: Piston Kit (Size A, Standard Bore)
• Piston Size: 76.95mm (Size A)
• Bore x Stroke: 77.0mm x 53.6mm
• Displacement: 249cc
• Compression Ratio: 12.5:1
• Kit Contents: Piston, Rings, Wrist Pin, Circlips
• Material: Forged Aluminum Alloy Piston
• Engine: 249cc Liquid-Cooled 4-Stroke DOHC 5-Valve Single-Cylinder
• Model Years: 2001-2007 (YZ250F), 2001-2013 (WR250F), 2010-2015 (EC-F 250)

COMPATIBLE MODELS:
Yamaha YZ250F / WR250F / Gas Gas EC-F 250:
• Yamaha YZ250F (2001-2007)
• Yamaha WR250F (2001-2013)
• Gas Gas EC-F 250 (2010-2015)

PRODUCT DETAILS:
This piston kit is a direct replacement for the Yamaha YZ250F motocross bike 2001-2007, WR250F enduro 2001-2013, and Gas Gas EC-F 250 enduro 2010-2015 with the 249cc liquid-cooled 4-stroke DOHC 5-valve single-cylinder engine. The 76.95mm Size A piston is designed for the standard 77mm cylinder bore providing factory-specified piston-to-wall clearance for optimal ring seal and compression in the high-revving YZ250F and WR250F engine. Each kit includes forged aluminum alloy piston, precision-fitted piston rings, hardened wrist pin, and retaining circlips for all Yamaha YZ250F WR250F and Gas Gas EC-F 250 applications. Manufactured using premium forged aluminum alloy and precision machined on CNC equipment for consistent dimensions and reliable performance in motocross and enduro racing conditions. The YZ250F features a DOHC engine with titanium valves and five-speed transmission for competitive motocross racing. Installs directly into the standard 77mm cylinder bore for piston replacement or top-end rebuild on all YZ250F WR250F and Gas Gas EC-F 250 motocross and enduro bikes.

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov