Arctic Cat Snowmobile Rail Brace Kit

Weights 1.2 LBS per pair with rivets (8639-291 & 8639-290), 8639-170 is 7.5 LBS

Reinforces entire mid section of suspension rail to resist bending

Part No 8639-291 Fits:

2021-2022 Arctic Cat M A1 154 -165 INCH Models

2021-2022 Arctic Cat Riot X 146 INCH Models

Part No 8639-290 Fits:

2019-2020 Arctic Cat M A1 154 -165 INCH Models

Note: 8639-290 only fits 2019-2020 rail. If you replaced your rail with a 2021 rail you need Part No 8639-291

Part No 8639-170 Fits:

2017-2019 Arctic Cat M & Mountain Cat 153 INCH Models

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