This thing rips! I found a Selvy pipe a few days later and paired it with the cylinder along with a Lectron 40mm carb and it took me awhile to dial in (because I’ve never used a Lectron, VERY easy by the way) but after that whooohoo, seriously. Talk about holeshot. I could not imagine putting this cylinder on an ATC, so much low/mid end that my front suspension rides almost completely unloaded down a straight. Not to mention it revs to the moon, even up hill under full load.