6639-621

Outside idler wheels help keep track in proper alignment
They also help spread load evenly across the entire track
Adds two idler wheels to the outside of the rail, for a total of 4 rear wheels
Includes 2 wheels, 2 spacer blocks, mounting hardware, and instructions
Recommended when adding studs

2012-2013 models are Pearl Cat Green
2014-2015 models are Team Arctic Green
2016-2018 models are Team Arctic Green and Medium Green
2019 models are Medium Green

Fits Models:

2016-2018 ZR 137"
2014-2018 XF 137"
2012-2015 XF 141"
2013-2015 XF CrossTour 141"
2012-2019 XF High Country 141" & 153"
2016-2019 M 141"
2012-2019 M 153" & 162"
(Excludes 2019 ZR & XF 137")
(Excludes 2016-2018 XF CrossTour 146")
(Excludes 2019 M Hardcore, rail brace interferes)
(Excludes 2019 M Alpha One)