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k2000x Added a reply to 2023 YZ450F Fuel Pressure Regulator Failure
6/12/2026 4:15am I just found this on AliExpress: | Fuel Pressure Regulator For Yamaha WR250F XT250 YZ250 YZ250F YZ250FX YZ450F YZ450FX 33D1390700 00/33D1390701/33D1390702/33D13907 https://a.aliexpress.com/_mrEhXBd covers 2010-23 yz450f I got one but for a kx250f worked a treat
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k2000x Started a new thread Prox valves who was the U.S manufacturer
6/8/2026 2:21am Hi I come across nos set of steel valves and spring kit from proX for my 2010 kx250f build. On the box it says made in the U.S.A my question is by whom as proX newer valves are made in Japan
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k2000x Added a reply to Starting and idle issues 2015 kx250f
5/26/2026 5:48am Was told that you shouldn’t touch that screw
k2000x Started a new thread Starting and idle issues 2015 kx250f
5/26/2026 2:25am Hi my idle is slow and I’ve tried to adjust it with the fast idle nob and it does nothing. Fresh engine after I purchased bike in a box takes 7 kicks to start and idles slower than recommended rpm
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k2000x Added a reply to 2022 RM 250 AF
4/24/2023 2:27pm Did you need to modify the y piece of the frame or only engine mounts