These bumpers are made specially for those who are shortening their OEM tunnels with the MTNTK shortening kit or cutting and welding their tunnels. As 7” is the most popular tunnel shortening length, this kit is made for this length of cut, however, it can work with a cut of 6” as well. The design of this bumper is to offer the bottom edge of the tunnel to be relieved and narrowed as this helps snow clearing and greatly reduces drag in deep snow. The side plates are laser cut 3/16” plates and machined to provide additional strength for the sides of the tunnel. The rear grab is specially made to protect the corners of the tunnel shortening kit, with tipped in side plates and raised rear grab bar. This design is made to help strengthen the tunnel after the tunnel cut is complete. This bumper along with the tunnel cut provides a dramatic increase to the efficiency of the back of the machine while riding in technical terrain and deep snow. A dramatic increase in forward movement can be realized.

-Dramatic increase in snowmobile efficiency.

Greatly increased forward movement and climbing can be realized

-3/16” Aluminum Laser cut, CNC machined side plates with robust rear grab increases tunnel strength

-Rear grab incorporates raised grab and tipped in sides for best flow

-Kit enables the bottom of tunnel to be trimmed for increased movement through snow.

-All parts included for complete installation

-Durable power coat finish

-Works with MTNTK shortening kit or shortened tunnels that are welded.

-Best for tunnel cuts of 7” but can be used for 6” cuts.


Comes in flat black. Custom colors are available.  


Please call (719)395-6727.



Polaris 2016-2021 AXYS RMK/Khaos 155 800/850 Rear Bumper - 7" Tunnel Cut


Polaris 2016-2021 AXYS RMK/Khaos 163/165 800/850 Rear Bumper - 7" Tunnel Cut

Skinz Ultra Lightweight Polaris AXYS Tunnel Cut Rear Bumper

Out of Stock
  • All domestic orders will be shipped UPS GROUND or USPS PRIORITY MAIL depending on the weight and dimensions of the package.  All international orders will be shipped UPS STANDARD or USPS PRIORITY MAIL INTERNATIONAL depending on the weight and dimensions of the package.  If you have a preference how your package is shipped you may submit a request by emailing us at or leaving a note at checkout. 


    Please allow approximately 15 days for international deliveries.