# Sole Fitness S77 Treadmill Rear Idler Roller (RP556)

\## Sole Fitness S77 Treadmill Rear Idler Roller RP556

The Sole Fitness S77 Treadmill Rear Idler Roller (RP556) is a replacement treadmill roller designed for the rear section of a Sole Fitness S77 treadmill. It helps support the treadmill belt at the rear of the running platform. If the original rear idler roller has worn out or needs replacement, this part may help restore the correct roller arrangement on a compatible machine.

This treadmill roller carries the product SKU RP556 and the part number K140043-Z3. It belongs to the Treadmill Rollers category and is listed as a preowned replacement part. The product listing identifies it specifically as a rear idler roller for the Sole Fitness S77 treadmill, making model verification important before purchase.

## Product Details and Benefits

The rear idler roller sits at the back of a treadmill and works with the running belt as the belt travels around the deck. Replacing a damaged or worn roller can help address a repair need without replacing the entire treadmill. This approach may suit treadmill owners, service technicians, repair shops, and people restoring used fitness equipment.

The product is identified as:

\- \*\*Brand:\*\* Sole Fitness  
\- \*\*Product:\*\* S77 treadmill rear idler roller  
\- \*\*Product category:\*\* Treadmill roller  
\- \*\*SKU:\*\* RP556  
\- \*\*Part number:\*\* K140043-Z3  
\- \*\*Condition:\*\* Preowned  
\- \*\*Barcode:\*\* RP556

The listing does not provide dimensions, material details, color, bearing specifications, or warranty information. It also does not include detailed installation instructions. Buyers should use the part number and treadmill model to confirm that the roller matches the component being replaced.

## Compatibility and Applications

This replacement rear idler roller is listed for the \*\*Sole Fitness S77 treadmill\*\*. It is intended for use as a rear roller component on that model rather than as a general-purpose roller for all treadmills. Compatibility with other Sole Fitness models or other treadmill brands is not confirmed by the product information.

The part may be useful when repairing an S77 treadmill that requires a replacement rear idler roller. It can also serve as a replacement component for maintenance work, used treadmill refurbishment, or parts replacement by a qualified repair professional.

\### Why Choose This Replacement Part

Choosing the correct roller can help you replace the affected treadmill component while keeping the existing machine in service. The specific model reference, SKU, and part number make it easier to compare this item with the roller currently installed on your treadmill. Because this item is preowned, it may suit buyers who need a replacement part for an older machine or who want to source a matching component for a repair.

## Before You Buy

Confirm that your treadmill is a \*\*Sole Fitness S77\*\* and compare the existing rear idler roller with part number \*\*K140043-Z3\*\* or SKU \*\*RP556\*\* before ordering. Check the roller’s dimensions and mounting details against your original component, as those specifications are not provided in the listing. Also review the item condition carefully: this product is listed as \*\*preowned\*\*. The listing does not state whether installation hardware, additional parts, or an installation guide is included.

## Details

- **Price:** 79.99 USD
- **Vendor:** Sole Fitness
- **Type:** Treadmill Rollers
- **Tags:** All

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 79.99 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/sole-fitness-s77-treadmill-rear-idler-roller-rp556)
> Updated: 2026-08-29