# Fitnex B70 Upright Exercise Bike Magnetic Brake Generator (GP13)

\## Fitnex B70 Upright Exercise Bike Magnetic Brake Generator (GP13)

The Fitnex B70 Upright Exercise Bike Magnetic Brake Generator, model GP13, is a preowned replacement component for the Fitnex B70 upright exercise bike. It belongs to the bike’s magnetic brake and generator system and may help restore the function of an existing machine when the original generator requires replacement. If you are repairing a Fitnex B70 and need the matching generator assembly, this part provides a practical way to replace the original component without purchasing an entire exercise bike.

## Product Details and Benefits

This product is identified as the \*\*Fitnex B70 Upright Exercise Bike Magnetic Brake Generator\*\*. Its local product name and SKU are \*\*GP13\*\*, and the barcode is also listed as \*\*GP13\*\*. The part is supplied in \*\*preowned condition\*\*.

Each used fitness part has been carefully inspected by skilled technicians. This inspection helps confirm that the component is suitable for continued use and supports safer, more reliable fitness equipment repairs. Because this is a used part, its appearance may show normal signs of previous use. The exact cosmetic condition can vary between available units.

Replacing an individual generator can help extend the working life of an existing exercise bike. It also gives repair customers an alternative to replacing the complete machine. Reusing a functioning fitness component can reduce unnecessary waste while helping keep equipment in service.

The product page does not list dimensions, weight, color, construction material, electrical output, connector details, installation hardware, or warranty information. These specifications should be confirmed before ordering if they are important to your repair.

## Compatibility and Applications

The GP13 generator is listed specifically for the \*\*Fitnex B70 upright exercise bike\*\*. It is intended as a replacement part for the bike’s magnetic brake generator component. Use it when servicing, repairing, or restoring a Fitnex B70 that requires this specific part.

Compatibility should be confirmed against the generator currently installed in your exercise bike. Check the model designation, part identification, connection points, and the original component before placing an order. The available information does not confirm compatibility with other Fitnex models, other exercise bike brands, or different generator systems.

This part is not described as a complete exercise bike, complete braking system, or universal generator. It is the individual \*\*GP13 magnetic brake generator\*\* listed for the Fitnex B70.

## Why Choose This Product

The Fitnex B70 GP13 generator may suit repair shops, gym equipment technicians, fitness centers, and home users maintaining a Fitnex B70 upright bike. Choosing a preowned replacement part can reduce repair costs compared with replacing the full machine. It can also help extend the useful life of existing fitness equipment.

The part has been inspected before sale, and the listing identifies the exact model and component. This makes it easier to compare the item with the generator already fitted to your bike.

## Before You Buy

Please verify that your equipment is a \*\*Fitnex B70 upright exercise bike\*\* and that the required part is the \*\*GP13 magnetic brake generator\*\*. Product photos are for reference only. The seller carries multiple units, so the part may look slightly different from the image, but it will be the listed model and component. Contact the seller if you need additional information before ordering.

## Details

- **Price:** 139.99 USD
- **Vendor:** Fitnex
- **Type:** Electrical Generators
- **Tags:** All

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 139.99 USD | In stock |

## Images

- GP13
- GP13
- GP13
- GP13
- GP13
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## Additional Information

- **Condition:** PREOWNED

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> Source: [Cardio Equipment Parts](https://www.cardioequipmentparts.com/products/fitnex-b70-upright-exercise-bike-magnetic-brake-generator-gp13)
> Updated: 2026-08-29