Bought this for my 2014 Husqvarna CR125 as kit with longer throttle cable. The MS-3 needle is for the Italian small bores, I also have the 3-2M needle (for Italian 250-300) due to mix up with initial order. I believe the 38mm with 3-2M is also good for later model white (and orange) 250-300 models. Of course, the Lectron will work with most 2-strokes with just a switch to the appropriate needle. Used about 40 hours total. Upgraded with the Float Bowl Bracket Kit (aluminum spacer at bowl mount, to avoid weeping with just the plastic bowl) and G-Force Kit (avoid bog on certain G-Out conditions). Details on upgrades: https://www.lectronfuelsystems.com/index.php/parts/float-bowl-bracket.html https://www.lectronfuelsystems.com/index.php/parts/g-force-kit.html Last photo includes the original parts that were replaced with the upgrades. $250 Pick up in Ottawa area, or I will ship at cost.