2012-21 M-Series/Proclimb/Alpha 4" Tunnel cut "Mountain Addition"Bumper kit .We have been doing in house installs and testing this product over the last few years and are proud to offer  Our new Bumper/tunnel stiffener that comes with our winged up replacement snowflap brace.We have also made a bracket that can utilize your factory tail light (requires a slight modification to your factory bracket) in which can be purchased with or without. This kit is designed to create less drag through the deep Snow,offer more grabbing room, and also strengthen the tunnel for purposes such as hauling extra fuel/gear.The 4"Tunnel Cut "Mountain Addition" Bumper kits are available in 146"/153/154",162"/165" lengths.We highly recommend running an extra set of Ice scratchers with this application (OTP ICE Storm Reversible scratcher's and or Skidoo part #860201728)This kit requires use of power tools and we recommend having a skilled fabricator do this cut if you feel at all uncomfortable doing it yourself. The side plates and bumper comes with all necessary predrilled holes making it a super easy installation.We recommend making sure you get the right bumper length by checking your tunnel cap length along the top.Install "YouTube" video coming soon.

NOTE:THIS KIT WILL NOT WORK WITH MODELS THAT HAVE AN UNDER TUNNEL COOLER AT THE BACK.

Tunnel Cap Length measurements Are as follows:

146,153/154"=42.5"

162/165"=47"

Tools Required

-3/16 Drill bit /Drill

-Air rivet gun

-Ellen key set

-3/8 wrench

7/16 wrench

-zip cutter/Jigsaw/Airsaw

-Sander