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Johnsonville, NY, USA
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digger Liked a reply to forum topic 2018 ktm 250sx jetting and FWW
5/10/2020 6:28am
They must have changed it in the xc/xc-w line then. I know I have worked on some that came from the factory with an s-4 in them. I think the 125's may have even come with an s-7. Either way the richer jet needle is a band aid fix for the leaner s-1.
This forum topic has 121 replies.
AJ565 Liked a reply to forum topic 2018 ktm 250sx jetting and FWW
5/10/2020 6:28am
Yeah it was the XC line that came with it.
This forum topic has 121 replies.
opyguy Liked a reply to forum topic 2018 ktm 250sx jetting and FWW
5/10/2020 6:27am
250sx has always used s-1 needle jet Biggest change from 18 to 19 was the needle 43-73 to 43-71 or 72
This forum topic has 121 replies.
Dmilkman589 Added a reply to 2018 ktm 250sx jetting and FWW
5/9/2020 2:12pm That’s false per any 250sx manual
Dmilkman589 Added a reply to 2018 ktm 250sx jetting and FWW
5/9/2020 1:34pm Well the stock 250sx is an S-1 so...
Dmilkman589 Added a reply to 2018 ktm 250sx jetting and FWW
5/8/2020 5:43pm I finally have my 2018 250SX jetted perfect in my opinion, no more off idle blubber and mean grunt through entire mid range. The motor feels electric and had no dead spots at all today. Will make minor adjustments as temps change. ADK MX, Fort Ann, NY roughly 200ft elevation 55 Deg F, May 8th 2020 Stock 2018 250sx minus...