Review on High-Performance KIPA Carburetor (FCR40) for Yamaha WR400F 1998-2000, WR426F 2001-2002, WR450F 2003-2011, YZ400F 1998-1999, YZ426F 2001-2002, YZ450F 2003-2009 - Flat Side 40mm by Craig Shah

Bought with a lot of skepticism due to the price and lack of real reviews. It looks like a high quality Chinese clone of the factory unit. I disassembled it to have a better look and the injectors even have the OE logo on them. I installed this on my 2005 YZ450F after leaving it on gas for over three years. The old carburetor could not be saved. I fired it up for my rig, flipped it over until I couldn't breathe, let it light, put it on idle and went into a spin. So far I'm VERY impressed. Original jets, neat equipment, adjustable needle. Once I set it up I get a few hours of BRAAAAAAAAAAAA! I will update if there is any problem. No updates, no problems. Update: still impressed! This weekend I rode 45 hard miles in the National Forest near me. zero problems. Everything from technical part-throttle clutch slippage to twisty stuff to constantly pounding tunnel vision in top gear.