This Speed Kit was named for the type of rider you have. If your child is an aggressive rider and you need to jump up to the next level in speed and power, we’ve created the AGGRESSOR SPEED KIT for you. Not only will it allow your child to hit the speed they want, it is upgradable to many stages.
This kit will typically help you gain 5-9 mph from stock speed.
Kit Includes: Power Intake Kit which comes with an adjustable main jet to correct the lean fuel condition that 120’s have from the factory, a Velocity Stack to give the engine more air then the restrictive factory air box, the correct Governor Spring for more RPM’s, a standard upgrade Replacement Clutch, Quick Change Hub, #35 Sprocket and Chain, and the #35 Sprocket Chain Tensioner.
This kit is designed for the 2010 and newer Arctic Cat/Yamaha sleds with the Yamaha Engine in them.