Pro-Form Carbon CX PFEX63919 Bike Brake Knob Push To Stop Set (MX799)

## Pro-Form Carbon CX Bike Brake Knob Push-to-Stop Set

The Pro-Form Carbon CX PFEX63919 Bike Brake Knob Push-to-Stop Set is a preowned replacement part for the Pro-Form Carbon CX indoor exercise bike. It replaces the bike’s brake knob and push-to-stop control, helping restore the original resistance and stopping function when the existing component is damaged, worn, missing, or no longer usable.

This product is identified as part number **403173** and SKU **MX799**. It belongs to the bike brake and resistance-control assembly. If you are repairing a Pro-Form Carbon CX bike and need the original-style brake knob push-to-stop set, this component may provide the replacement you need.

Product Details and Benefits

The Pro-Form Carbon CX brake knob push-to-stop set serves as a manual control on the bike. The knob allows the rider to operate the bike’s brake and resistance mechanism during use, while the push-to-stop function supports stopping the flywheel when required. Replacing a faulty control can help return the bike to normal operation and make the equipment more practical to use.

This is a **preowned Pro-Form replacement part**. Each part has been carefully inspected by skilled technicians to check its condition, performance, and safety before sale. Used fitness equipment parts can offer a cost-conscious option for repairing an existing machine instead of replacing the complete bike or brake assembly. Reusing a serviceable component also helps extend the working life of the equipment.

The item is sold as the **Pro-Form Carbon CX PFEX63919 Bike Brake Knob Push-To-Stop Set**. The product is not a complete exercise bike or a full brake assembly. It is the specific knob and push-to-stop set listed for this product.

Compatibility and Applications

This replacement brake knob set is intended for the following equipment:

- **Brand:** Pro-Form
- **Bike model:** Carbon CX
- **Model number:** PFEX63919
- **Part name:** Bike brake knob push-to-stop set
- **Part number:** 403173
- **SKU:** MX799
- **Condition:** Preowned

Use this part when servicing or restoring a compatible Pro-Form Carbon CX indoor cycling bike. Compatibility should be confirmed before ordering, especially if your bike has a similar-looking control with a different model number or part number.

### Why Choose This Replacement Part?

Choosing the correct replacement knob can help avoid replacing larger, more expensive sections of the bike. This part may suit customers repairing a Carbon CX bike, maintaining a home exercise setup, or sourcing a discontinued or hard-to-find control component. A preowned part can also reduce waste by keeping usable fitness equipment components in service.

Before You Buy

Confirm that your exercise bike is the **Pro-Form Carbon CX PFEX63919** and compare the required part number with **403173** or SKU **MX799**. Product images are provided for reference only. Because multiple units may be in stock, the part you receive may look slightly different from the pictured item, but it will be the exact model and part listed.

This listing is for the replacement brake knob push-to-stop set only. Contact the seller if you need additional information before ordering.