2021年6月2日 · -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) -the Sherco 250SE is a purpose-built enduro bike with e-start, front/rear lights, 6-speed gearbox, larger capacity fuel tank etc.

2024年12月26日 · Gonna give a two stroke a try for this seasons enduro championship in D36 after 3 years on 450’s. Slowly going through it one or two changes at a time. Will share thoughts. First changes were 23.5mm triples, then several rounds of jetting. Skid plate, radiator guards from Bulletproof, hands guard...

2021年2月11日 · I have been a big fan of Kinger 317's Power Jet #40 jetting recipe and have been running his exact formula for nearly as long as I've owned my 2018 YZ250X with good results. I would endorse his formula for any head squish corrected YZ250 which -- while there are plenty of variants in the 71-page and counting thread (see below) -- I believe the ...

2020年5月13日 · Ok, I am aware of the differences between the 250 and the X, and know there are a bunch of posts about it, head, porting, transmission, porting, suspension, kickstand, CDI, power valve, pipe. Problem is saying the "porting and head is different" doesn't answer the questions I have. I am beginning...

2020年12月7日 · List of modifications to bike ALL DONE MANY HOURS BEFORE THE HEAD INSTALL (2016 YZ250X): GYTR Flywheel 13/50 gearing Pro Circuit 296 Spark Arrestor, Stock pipe Governor Mod 91 Pump Gas Amsoil Dominator 40:1 I was looking to improve the low end grunt/lug and clean up the running of it across altitude changes.

2018年12月2日 · I have a 2017 YZ250x. I was running stock spring with preload cranked down so much that I had almost no static sag. I was also way past the number of turns in from "free length" that is stated in the owners manual. The best I could get was 100mm race sag with 12mm static.

2020年8月14日 · 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 leak jet. I ride 0-2000'. Kelsey set me up on the hot side on the CR.

2020年6月3日 · Hey guys, I have a 2019 yz250x which I love but i think it’s time I raise the bars a bit, lower the pegs and eventually get a seat. After a long ride yesterday I was pretty worn out from being hunched over and also always felt like I was too far over the bars. i love the fastway pegs but they all...

2018年1月17日 · I searched and only saw posts from a few years back or older model year YZ250s so I thought I would post this. 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.

2019年4月13日 · Currently have 14f-51r sprockets on my "18" YZ250X, would like a lot more low end, particularly in 3rd where I find myself in most of the trails/ST and races I do here in Ga.....I know one tooth on front is like 3 on the rear so looking at significant change. I will lose some top end mph but can...