# Cybex 750C Recumbent Bike Lower Motor Control Board AD-21280 (BP445)

\## Cybex 750C Recumbent Bike Lower Motor Control Board AD-21280 (BP445)

The Cybex 750C Recumbent Bike Lower Motor Control Board is a replacement control board identified by part number AD-21280 and SKU BP445. This lower motor control board is intended for use with a Cybex 750C recumbent exercise bike. If the original lower control board has failed, become damaged, or requires replacement, this part may help restore the bike’s original control-board configuration. Confirm the part number and equipment details before ordering to make sure it matches your machine.

## Product Details and Benefits

This product is a lower motor control board for a Cybex commercial recumbent bike. The board forms part of the bike’s lower control system and is identified specifically for the Cybex 750C model. Its product designation is \*\*AD-21280\*\*, while \*\*BP445\*\* serves as the listed SKU and barcode.

A replacement control board can help simplify repairs when the existing board no longer functions as intended or when a service technician needs to replace the original component. Using the correct board number helps reduce the risk of ordering a visually similar part that does not match the equipment’s electrical or control-system requirements.

The product page identifies this item as a control board only. It does not provide dimensions, material details, electrical ratings, color, installation instructions, warranty information, or additional included components. Review the part markings and machine requirements before purchase and installation.

## Compatibility and Applications

This replacement lower motor control board is listed for the following equipment:

\- \*\*Brand:\*\* Cybex  
\- \*\*Equipment:\*\* Recumbent exercise bike  
\- \*\*Model:\*\* 750C  
\- \*\*Component:\*\* Lower motor control board  
\- \*\*Part number:\*\* AD-21280  
\- \*\*SKU/barcode:\*\* BP445

The board is intended for repair or service work on a Cybex 750C recumbent bike. It is not listed as a universal control board, and no compatibility information is provided for other Cybex models or different exercise equipment. Use the model and part number as the primary compatibility checks before buying.

The product listing also includes the serial number \*\*D0108750C90004N03\*\*. If this number relates to your equipment or the original component, compare it with your bike’s service information before placing an order. When compatibility remains uncertain, consult the equipment documentation or a qualified fitness-equipment technician.

## Why Choose This Product

Choose this part when you need the specifically identified lower motor control board for a Cybex 750C recumbent bike. The clear AD-21280 part number and BP445 SKU make it easier to compare the replacement with the board currently installed in your machine. Matching the original component number can support a more accurate repair-part selection.

## Before You Buy

Verify that your equipment is a \*\*Cybex 750C recumbent bike\*\* and that the existing lower motor control board carries part number \*\*AD-21280\*\*. Check the SKU \*\*BP445\*\* and the listed serial reference where applicable. The listing does not confirm installation requirements or package contents, so arrange installation through a qualified technician if you are not familiar with exercise-equipment control systems.

## Details

- **Price:** 249.99 USD
- **Vendor:** Cybex
- **Type:** Lower Control Boards
- **Tags:** All

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 249.99 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/cybex-750c-recumbent-bike-lower-motor-control-board-ad-21280-bp445)
> Updated: 2026-08-29