Choosing the right suspension rail idler wheel comes down to one number: the diameter that matches your snowmobile's skid frame. Polaris offers two genuine gloss black versions at the same listed price-one with a 5.62 in. diameter, one with a 7.25 in. diameter-so the buying decision is less about budget and more about which wheel size your setup needs.
Quick verdict
Both are genuine Polaris parts, both are new, and both are listed at USD 74.99. The larger wheel's description names a range of 2024 Timbersled RIOT and ARO models it's designed to fit; the smaller wheel's listing keeps the focus on its diameter and OEM-quality build. Match the diameter to your application.
At a glance
| Attribute | Polaris 5.62 in. Idler Wheel | Polaris 7.25 in. Idler Wheel |
|---|---|---|
| Listed Price | USD 74.99 | USD 74.99 |
| Diameter | 5.62 in. | 7.25 in. |
| Finish | Gloss Black | Gloss Black |
| Condition | New | New |
| MPN | 1590419-070 | 1590431-070 |
| GTIN | 194722032187 | 194722034525 |
Where each wheel wins
Choose the smaller-diameter version when you already know your skid frame is set up for a 5.62 in. wheel; the listing gives you the exact size and a single-item package count. Choose the 7.25 in. version if you own one of the 2024 Timbersled RIOT or ARO models named in its description-the listing spells out the intended models.
Polaris Snowmobile Suspension Rail Idler Wheel 5.62 in., Gloss Black, Genuine
With its clearly stated 5.62 in. diameter and gloss black finish, this genuine Polaris wheel is the direct size match if that's the idler wheel your suspension calls for. The listing shows it as a single-item package and identifies it by MPN 1590419-070 and GTIN 194722032187. The description highlights the wheel's part in controlling track motion around the skid frame and Polaris' OEM-quality engineering. It's the right pick when you don't need a larger wheel; if your setup is designed around the 7.25 in. diameter, this smaller option won't be the match.
Polaris Snowmobile Suspension Rail Idler Wheel 7.25 in., Gloss Black, Genuine
This genuine Polaris wheel pairs its 7.25 in. diameter with a description that names the 2024 Timbersled RIOT and ARO models it's designed to fit, including the RIOT 3 PRO, RIOT 120, ARO 3 PRO, and ARO 129. If your snowmobile is on that list, this listing gives you a clear target. It's identified by MPN 1590431-070 and GTIN 194722034525. The limitation is the flip side: a sled set up for the smaller wheel will be looking at the wrong diameter if you choose this one.
Final choice by use case
Pick the larger wheel if your snowmobile is one of the 2024 Timbersled RIOT or ARO models listed in its description. Pick the smaller-diameter wheel if your skid frame is set up for the 5.62 in. size. Both genuine Polaris wheels share the same listed price and gloss black finish, so the deciding factor is the wheel diameter your suspension requires.
