## Precor 9.21s Treadmill Rear Idler Roller
The Precor 9.21s Treadmill Rear Idler Roller (RP657) is a replacement treadmill roller designed for the rear section of a Precor 9.21s treadmill. It supports the treadmill belt system and serves as a replacement for the original rear idler roller when the existing component becomes worn, damaged, or needs replacement during service. If you are repairing a Precor 9.21s treadmill, this preowned roller may help restore the machine without replacing the entire treadmill.
Product Details and Benefits
This part belongs to the treadmill roller category and carries the part number **9.21-RRI**. The product SKU and barcode are **RP657**. It is sold in preowned condition and has been carefully inspected by skilled technicians before sale.
A functioning rear idler roller plays an important role in the treadmill belt assembly. Replacing a worn roller can support proper belt operation and help keep the treadmill in service. This replacement part gives repair technicians, fitness equipment owners, and maintenance departments an option for addressing a roller-related repair with a specific Precor component.
Because this is a used fitness part, its appearance may vary from the product images shown online. The seller carries multiple units, so the roller you receive may look slightly different from the reference pictures. However, the part will be the same model and type listed on this product page.
Choosing a preowned treadmill component can also reduce waste by extending the useful life of existing fitness equipment. Reusing serviceable parts helps keep components out of landfills and gives older treadmills more time in operation.
Compatibility and Applications
The **Precor 9.21s Treadmill Rear Idler Roller** is intended for use with the **Precor 9.21s treadmill**. It is a rear idler roller replacement part, not a complete treadmill belt, motor, front roller, or treadmill assembly.
This component may suit:
- Precor 9.21s treadmill repairs
- Replacement of the original rear idler roller
- Preventive maintenance on compatible Precor fitness equipment
- Service work performed by treadmill technicians or equipment owners
The listed model compatibility is **Precor 9.21s**. Confirm that your treadmill matches this model before ordering.
### Product Identification
- **Brand:** Precor
- **Product name:** 9.21s Treadmill Rear Idler Roller
- **Product category:** Treadmill Roller
- **Part number:** 9.21-RRI
- **SKU:** RP657
- **Barcode:** RP657
- **Condition:** Preowned
- **Quantity:** One replacement roller is represented by this listing unless otherwise stated by the seller
Before You Buy
Check your treadmill’s model and compare the existing rear roller with the part information above. Verify that your equipment is a Precor 9.21s and that you need the rear idler roller rather than another roller or belt component. Product photos are for reference only, and the physical appearance may differ between available units.
Installation details, dimensions, material specifications, and warranty information are not provided in the listing. If you need additional information before ordering, contact the seller with your treadmill and part details.