In the mid-range

physical acoustic attenuation through rigid body absorption causing the suppression of longitudinal waves by precise

decrease engine temps

900 big bore top end kit fits all 2019+ Polaris 850 Axys Sleds

Download the instruction HERE

Helix Torsion / Arctic Cat Procross - Proclimb Arctic Cat Helix:48-40 Progressive In the mid-rangeHigh quality helixes for the 2012 15 Arctic Cat models. These helixes come with an adjustable endcap which allows you to run a torsion spring setup by drilling a hole in your secondary clutch. For more information, see our Stage 2 clutch kit or the torsion kit. 2012 15 Arctic Cat torsion style helixes with adjustable endcap. Normally stocked helixes are listed below.