Your dirt bike’s factory airbox system was designed for hot, dry, dusty air. When riding in snow, your air filter will get wet and freeze, causing a rich fuel mixture, hindering performance and risking engine damage by overfuelling. Enhance your bike's performance, with improved throttle response with a less restrictive cold-air intake system that is water resistant and light weight.One of the most vital additions to any snowbike! (Along with a )Exciting update: we're using custom purpose-designed and optimized air boots instead of off-the-shelf adapters! Better fit and improved airflow!This intake system mounts right up where your stock airbox was, with a laser cut aluminum pod, mounts for your PCV system and air temperature sensor, all necessary mounting hardware, and a custom dual-layer , made in the USA by “Outerwear”Please note that on some bikes, modifications to (and possible cutting of) the airbox is needed to ensure optimal snow evacuation and fit (including most newer KTMs (but not Huskys) and older Japanese bikes). We recommend buying a spare set of "jobber" airbox plastics (typically adds like $40 to your build) if you want to keep your OEM ones pristine for summer.If you have a bike which calls for a CAIN1017 (check the selectors above) but do NOT wish to connect the PCV breather tube to the intake, you can choose the CAIN1024 (Kawasaki) option instead (fitment is the same but without the breather barb)Looking for install instructions? Check here! bit.ly/C3PowersportsIntakeInstallInstructionsYamahabit.ly/C3PowersportsIntakeInstallInstructionsHonda