Recent content by ratmac

Finally removed the head off my bike. After removing the carbon deposits an A and a 66.34 were visible. The bike has 120 hours. Should i get a 66.34 or a 66.35 piston? The mechanics in my city don't have the proper tools to measure the bore with preci

My 2018 ec 250 has 101 hours on the stock piston and i Will be doing a topend. This bike has never been torn apart. Is there a way to know which piston letter to get?

Thanks i have a NEDW needle on order at my local dealer. The N3CG is an option i could try because the stock jetting is really rich

I used to run that needle on a 2017 yz 250x

It's a 38 mm Keihin as2

Hi i have an n3cg needle and a jd jetting blue needle from a 2023 yz 125 kit at Home. Are any of those needles a good option for a 2019 250 ec ridden from 1500 to 2300 meters between 10 to 30 degrees celsius. Right now My bike has the stock needle and it guzzles gas, makes white smoke and...