How many hours before rebuilding the top end? - ThumperTalk
2021年3月19日 · For my 2018 YZ250X I went 80 hours. I ride mostly singletrack and the trails to get to/from them, plus some putting around with my kids. Pics below. I could’ve gone longer but as others have said, top ends are relatively cheap. I will wait another 80, but I ride a little bit slower than @Yamahanick hehe.
Which flywheel weight for YZ250X (and install) - ThumperTalk
2018年1月17日 · I have a 2018 YZ250X and based on suggestions from a thread I posted on "what YZ250X mods out of the gate?" I'm looking into adding a flywheel weight. This Steahly model comes in 11 or 13 oz. ... and this MSR model comes in 9, 11 or 13 oz. Any suggestions, especially on how much weight, would be much appreciated.
2022 yz250x - Yamaha 2 Stroke - ThumperTalk
Posted March 6, 2022. Despite both being 250 2-strokes, the Sherco 250SE versus Yamaha YZ250X can't be compared as direct competitors to each other. -the YZ250X is still 95% an MX race bike with very few off-road features 'sprinkled on'. (18" wheel, kickstand, minor engine and suspension characteristics changed)
2021 yz250x jetting questions - Yamaha 2 Stroke - ThumperTalk
2020年10月15日 · 48 pilot jet. stock needle 2nd position. air screw 1.5 turns out. 30:1 fuel ratio. The bike is brand new with less than 10 hours on it. General riding conditions. Elevation - 50M-250M. Temp : 15-25C ( or 59-77F for my American riders) Humidity anywhere from 50-100% depending on time of the spring/summer/fall.
RK TEK Head YZ250X - Yamaha 2 Stroke - ThumperTalk
YZX120. Posted August 13, 2020. I would like to do a review of the RK Tek head. The review is based on my 2017 YZ250X. List of things done to the engine: D.E.P Exhaust system (ARMORED ENDURO/SHORTY), V-force 3 reeds. PV Mod, RK Tek head (high compression), Boyesen water pump, Wiseco prolite and Jetting. Jetting is a 58 pilot/185 Main and stock ...
YZ250X premix oil and ratio - Yamaha 2 Stroke - ThumperTalk
2019年3月4日 · ThumperTalk. I know I’ll get a different opinion from everyone on this topic but I like seeing what everyone else has to say. I recently decided to do some research as to what ratio and premix oil to use in my 2018 yz250x. The past several years I have used Amsoil Dominator at …
YZ250X- head mod / squish - Yamaha 2 Stroke - ThumperTalk
2021年4月26日 · Who has had the head stock cut on their YZ250X? Looking for experiences with reducing the squish clearance. I don’t mind if it reduces the head volume / increases compression. I ride the track primarily anyway. What did you have your squish set to - and still run pump gas.
Apex Racing Yamaha Cylinder Heads - Yamaha 2 Stroke
2021年3月6日 · I don't know how to explain the power, the bike just runs better everywhere. Here's my setup for eastern PA (500-3000'): 175 main/45 slow/N3CW-2/40 power (needle is leaner than Kinger's) 2020 YZ250X. Only mod on the engine is the power valve governor and the Apex XC dome. Edited March 7, 2021 by DirtyBeers.
Yz250x vs 250fx? - What Motorcycle Should I Buy? - ThumperTalk
2021年1月20日 · I think the YZ250X is a rehash of a motocross bike that was great in 2007. If you want a 4-stroke get a YZ250FX. If you want a 2-stroke look a different manufacturer that offers a more modern version like Beta, KTM , etc. Things like eStart, 6 speed transmission, counter balancer, bigger fuel tank , hydraulic clutch , etc are all worth the ...
YZ250 or YZ250X? - Yamaha 2 Stroke - ThumperTalk
2015年10月4日 · If you want to beat guys on 4 strokes, or ride anything technical or just ride faster for longer, then: 1. The stock YZ250 1999-2015 motor doesn't have broad enough power. On/off pipe is stone age. 2. The stock suspension is too firm or harsh. The 250X will have broader power, mainly via the head and porting setup.