4th wheel Kits for Rear Axle
2014-2018 Viper & Sidewinder Add on 4th Wheel
2019 Viper & Sidewinder Kit Heavy Duty Kit
2019 Viper & Sidewinder Std Kit with OEM wheel
2010-2015 Mono II Kit
2003-2009 Models, All FX Nytro & Phazer, All XTX, & Single Shot
03- 18 Japan built sleds have only 3 wheels on the rear axle This 3 wheel set up puts extra load on the solo wheel. If the solo wheel were to fail the sled is no longer mobile. By running a 4th wheel kit the load is evenly distributed on the rear axle, and should any one wheel fail the sled can still be ridden.
14-18 SR Viper and Sidewinder sleds only run 2 wheels on the rear axle and is known as the tri hub. Beings the two wheels are bolted together if one of the wheel bearings fail, essentially the whole assembly fails. This makes the sled inoperable, and tri hub failures can even cause track and rail damage. The 4th wheel add on kit adds 2 outside wheels for extra insurance. We utilize used standoffs for these kits to keep costs down. Wheels and hardware are new. See photo below for assembly sequence on this kit. For those wanting the most durable option, check out the Solid Axle Kit listed in the menu.
19 Viper & Sidewinder come through with a solid axle and 3 wheels again. The stock wheels appear quite cheap, and my suggestion is to replace the inside wheel when adding a 4th wheel.
20mm Axle Kit - All 03-09 sleds, & all year Phazers & FX Nytro, All 16+ Single Shot skids....$45
Mono Shock II Kit -Fits all 2010-2015 Apex and Vector 121, 128 & 136 Skids.....$60
14-18 SR Viper & Sidewinder add on 2 wheel kit....$75
19 SR Viper & Sidewinder heavy duty kit with 2 rubber OD wheels with 6205 bearings..$95
19 SR Viper & Sidewinder std duty kit with 1 oem wheel...$55