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    Polaris updates on 2018 sleds

    Posted by Tyler Nelson
    on Wednesday, August 30, 2017

     There is a lot to look forward out of Polaris for their 2018 sleds. They're constantly looking for ways to improve their vehicles for enhanced performance and quality. We recently received an update on additional changes for this model year. Take a look at a few of the cool new updates!

    800 H.O. Cleanfire Engine Update
    - New thermostat provides:

    • Lower operating temperature, 110º F (43.3º C) vs. 125º F (51.6º C) for improved overheat margin and more-consistent engine operation
    • Increases main circuit flow by 12 percent; Increases bypass flow 9 percent
    • New thermostat will come on all 2018 snowmobiles with the 800 H.O. Cleanfire engine.

    - More-durable exhaust gas temp sensor (EGT) providing over 200 percent life improvement

    • Improved connector
    • More-durable sensing element
    • Matched to new ECU

    - Sealed cross-shaft cavity crankcases provide additional lubrication and increased durability on both 600 and 800 H.O. Cleanfire engines
    - Improved MAG end seal provides better sealing and increased durability on both 600 and 800 H.O.

    RMK Monotube Shock Updates
    - 2018 RMK Monotube Shocks will feature all new valving with “Hi Flow” Walker Evans pistons on the Front Suspension and Rear Track Shock that delivers less bottoming in the big bumps while maintaining a supple feel on the trail.

    SKS 146 Track Change - Peak 2.25” changing to the Series 5.2 2.25”
    - The 2018 SKS 146 will come standard with the new Series 5.2 2.25” Track. The Series 5.2 provides great traction both on- and off-trail while having excellent durability. It is modeled after the modified Series 5.1 that the Polaris’ Championship Winning Hillclimb Team uses to dominate the RMSHA circuit.

    800 Switchback Assault 144 with E/S and Series 4 2.0 Track
    - Based on feedback and requests, Polaris is now offering an in-season, stocking model 800 Switchback Assault 144 with the 2.0 track and electric start.

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