Original parts that meet factory specifications for stator coils and magnet coils for Yamaha WR450F off-road motorcycles (compatible with models 2012-2015).

This product is an original Yamaha WR450F stator coil (magneto/alternator coil), specifically designed for the Yamaha WR450F Professional Endurance off-road motorcycle. It is fully compatible with models from 2012 to 2015. This coil has been specially reinforced to withstand the intense and sustained vibrations, mud spray, and high temperatures encountered on forest trails and rough terrain. It ensures a stable and reliable fuel supply to the powerful four-stroke single-cylinder engine and its electronic fuel injection system, even under extreme conditions – a crucial advantage for tackling the most demanding terrain. 【Important Product Information】 Compatible Model: Yamaha WR450F, Professional Endurance Off-Road Motorcycle. Compatible model years: 2012, 2013, 2014, 2015. Important note: WR450F models from 2007 to 2011 use a different coil and are not compatible. Models from 2016 onward may have been updated. Please check your vehicle's model year. Engine type: 449cc single-cylinder, four-stroke, liquid-cooled engine with electronic fuel injection (EFI). Component function: This product is the primary power-generating component of the magneto. Under frequent RPM fluctuations and heavy off-road conditions, the coil must provide a continuous and stable three-phase power supply to the following critical systems: Electronic Fuel Injection: Supplies power to precision components such as the engine control unit (ECU), fuel injectors, and throttle position sensor for precise fuel injection. Ignition system: Supplies power to the high-performance ignition coil and produces a strong spark. Charging system: Charges the lithium or lead-acid battery and powers the lights (if equipped) and instruments. Targeted fault symptoms: This product is designed to correct typical WR450F faults caused by damage to the stator coil after heavy use: starting difficulty or complete failure to start (especially after a warm-up period or sporty riding). Unusually rapid battery discharge, affecting fuel injection operation. Sudden and intermittent engine stalling or loss of power during operation (a problem unrelated to the fuel system). The fuel injection fault indicator flashes or remains illuminated. The charging voltage is too low or unstable (normally between 13.5V and 14.5V).