# Keys Fitness Milestone 2200 Treadmill Rear Idler Roller (RP331)

\## Keys Fitness Milestone 2200 Treadmill Rear Idler Roller (RP331)

The Keys Fitness Milestone 2200 Treadmill Rear Idler Roller is a replacement treadmill roller designed for the rear section of a compatible Keys Fitness treadmill. It helps support the running belt at the back of the machine. If the existing rear roller shows wear or needs replacement, this part provides a direct product match for the Keys Fitness Milestone 2200 treadmill, subject to confirming the model and roller measurements before ordering.

## Product Details and Benefits

This product is a rear idler roller for a treadmill. The rear idler roller sits at the back of the treadmill deck and forms part of the belt-running system. Replacing a worn or damaged roller can help restore the correct component arrangement and support maintenance of the treadmill.

The product is identified as:

\- \*\*Product:\*\* Treadmill rear idler roller  
\- \*\*Brand:\*\* Keys Fitness  
\- \*\*Compatible model listed:\*\* Milestone 2200 treadmill  
\- \*\*Part number:\*\* RP331  
\- \*\*SKU:\*\* RP331  
\- \*\*Category:\*\* Treadmill Rollers  
\- \*\*Condition:\*\* Replacement part

The RP331 is intended for use when the original rear idler roller requires replacement. It may suit a treadmill repair project, routine equipment maintenance, or the restoration of a Keys Fitness Milestone 2200 machine. Using the correct roller helps ensure that the replacement part matches the treadmill’s intended rear roller position.

## Compatibility and Applications

The Keys Fitness Milestone 2200 Treadmill Rear Idler Roller is listed for the \*\*Keys Fitness Milestone 2200 treadmill\*\*. It replaces the rear idler roller used in that treadmill model.

This part is suitable for customers who need a rear treadmill roller identified by part number \*\*RP331\*\*. It can also help repair technicians and home gym owners identify the correct component when servicing a Keys Fitness Milestone 2200 treadmill.

Compatibility should always be confirmed before purchase. Treadmill parts can vary by model, production run, and roller dimensions, even when they appear similar. Do not rely only on the general appearance of the part. Compare the model name, part number, and roller measurements with the component currently installed on your treadmill. A roller measurement reference is provided with the product listing.

## Why Choose This Product

Choosing a part with a clearly listed model application makes treadmill maintenance easier. The RP331 gives you a specific replacement reference for the rear idler roller on a Keys Fitness Milestone 2200 treadmill. Its defined part number also helps reduce confusion when comparing treadmill repair parts or ordering a replacement for an existing component.

Replacing the correct rear roller can help you avoid using an unsuitable treadmill roller that may not match the machine’s design or measurements.

## Before You Buy

Check that your equipment is a \*\*Keys Fitness Milestone 2200 treadmill\*\* and that the original rear idler roller matches the product information for \*\*RP331\*\*. Review the roller measurement reference shown on the product page before ordering. If your treadmill model, part number, or dimensions differ, confirm compatibility before purchase. This listing is for the rear idler roller only; no additional package contents are specified.

## Details

- **Price:** 89.99 USD
- **Vendor:** Keys Fitness
- **Type:** Treadmill Rollers
- **Tags:** All

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 89.99 USD | In stock |

## Images

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## Additional Information

- **Condition:** PREOWNED

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> Source: [Cardio Equipment Parts](https://www.cardioequipmentparts.com/products/keys-fitness-milestone-2200-treadmill-rear-idler-roller-rp331)
> Updated: 2026-08-29