# Horizon Fitness TSC4 Treadmill Rear Idler Roller (RP649)

\## Horizon Fitness TSC4 Treadmill Rear Idler Roller

The Horizon Fitness TSC4 Treadmill Rear Idler Roller (RP649) is a replacement treadmill roller designed for the rear section of a Horizon Fitness TSC4 treadmill. It helps support and guide the walking belt as the treadmill operates. If the original rear idler roller shows wear, damage, or other signs of service-related deterioration, replacing it can help restore the treadmill’s belt support system and keep the machine ready for continued use.

## Product Details and Benefits

This rear idler roller is a preowned replacement part removed for reuse in a compatible Horizon Fitness treadmill. Each part is carefully inspected by skilled technicians before sale to check its condition, performance, and safety. Reusing a serviceable treadmill component can provide a practical alternative to replacing an entire machine or purchasing an unused part.

The roller belongs to the treadmill roller category and is intended for the rear belt assembly. The rear idler roller works with the treadmill’s walking belt system, helping the belt travel around the rear of the deck during operation. A suitable replacement may help address problems related to a worn or damaged rear roller, although the exact cause of a treadmill issue should be confirmed before ordering.

This part is identified by the following information:

\- \*\*Brand:\*\* Horizon Fitness  
\- \*\*Compatible treadmill model:\*\* TSC4  
\- \*\*Product type:\*\* Treadmill rear idler roller  
\- \*\*Part number:\*\* 1000108449  
\- \*\*SKU:\*\* RP649  
\- \*\*Condition:\*\* Preowned  
\- \*\*Quantity:\*\* One rear idler roller

The product listing uses reference images. Because multiple units may be in stock, the part you receive may look slightly different from the pictured example. However, the seller states that the item will be the exact model and part type identified in the listing.

## Compatibility and Applications

The Horizon Fitness TSC4 treadmill rear idler roller is intended for use as a replacement rear roller on the \*\*Horizon Fitness TSC4 treadmill\*\*. It suits treadmill owners, repair technicians, fitness equipment service businesses, and anyone restoring a TSC4 machine with a worn or damaged rear idler roller.

This part is not listed as a universal treadmill roller. Compatibility should be based on the treadmill model and part number rather than appearance alone. The listed part number is \*\*1000108449\*\*, and the seller’s SKU is \*\*RP649\*\*.

\## Why Choose This Replacement Part

A preowned treadmill roller can help extend the usable life of an existing Horizon Fitness TSC4. Replacing the affected component instead of discarding the treadmill may reduce repair costs and avoid unnecessary waste. The part has been inspected before sale, giving buyers useful condition information when sourcing a replacement for service or maintenance work.

## Before You Buy

Confirm that your treadmill is a \*\*Horizon Fitness TSC4\*\* and compare the existing rear idler roller with part number \*\*1000108449\*\* or SKU \*\*RP649\*\* before ordering. The listing does not provide dimensions, material details, or installation instructions, so verify those requirements with a qualified treadmill technician if needed. Images are for reference only, and the delivered preowned part may have minor visual differences while remaining the exact listed model and part type.

## Details

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

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 79.99 USD | In stock |

## Images

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## Additional Information

- **PartNumber:** 1000108449
- **Condition:** PREOWNED

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> Source: [Cardio Equipment Parts](https://www.cardioequipmentparts.com/products/horizon-fitness-tsc4-treadmill-rear-idler-roller-rp649)
> Updated: 2026-08-29