LOOP, BODY (900151) is an internal part specifically designed for Walker Evans shocks. Designed by Polaris Engineers for durability, functionality, and accurate fitment on your Polaris vehicle through rigorous field and lab validation testing. Buy confidently as Polaris is a trusted powersport provider that has been making snowmobile parts since 1954. With a customer focused approach, Polaris snowmobiles suspension parts are high quality and can withstand the life of your vehicle so you spend less time wrenching and more time out riding. We've been a leader in the snowmobile industry for nearly 70 years, don't settle for anything less than OEM quality. This Accessory is Designed to Fit the Following: Snowmobiles , 2015 800 RMK 163 , 2015 800 RMK 155 , 2015 600 RMK 155 , 2015 600 RMK 144 , 2012-2015 600 PRO RMK 155 , 2012 800 PRO RMK 163 ES , 2012 600 PRO RMK 155 ES , 2011-2015 800 PRO RMK 163 , 2011-2015 800 PRO RMK 155 , 2011-2012 800 PRO RMK 155 ES