Pedal Power
So, you have been turned on to this e-bike thing – good for you! We are stoked to offer an eMTB Spider to run 104BCD rings on your e-bike. This spider is only compatible with the Bosch Gen 4 Performance Line CX and SX motors. Any Race Face 1x 104BCD ring will mount securely with the included hardware.
eMTB Spider – Bosch G4 104BCD
Specs
| Compatible With | 104 BCD 4 arm cranks |
| Material | Aluminum |
| Compatible With | Bosch Gen 4 & 5 Performance Line SX and CX motors (Gen 5 CX will need spacer installed for 55mm chainline) |
| eMTB Built | Built for compatibility constraints and increased loads/forces of full-power e-bikes. |
Frequently asked questions
Which Bosch motor systems is this spider compatible with?
The Race Face eMTB Spider is compatible with Bosch Gen 4 and Gen 5 Performance Line CX and SX motors.
- Performance: It is engineered from high-grade aluminum to handle the high torque of these e-bike systems.
- Chainline: It provides a 52mm chainline. Please note that if you are using it with a Gen 5 CX motor, an additional spacer is required to achieve the correct 55mm chainline.
- Versatility: This spider enables the use of standard 104 BCD 4-arm chainrings, making it an excellent choice for riders who want more flexibility in their drivetrain setup.
Can I install this on my own?
Yes, the spider comes with all necessary mounting hardware. However, because it is a drivetrain component, some mechanical knowledge is required for installation. If you are unsure about the process, we recommend visiting a local dealer for professional assistance.
Does this work with 12-speed chainring setups?
Yes, this spider is specifically designed to provide a secure and precise mount for 1x 104BCD chainrings, including those configured for SHI-12 speed drivetrains.
What is the chainline for this eMTB spider?
The Race Face eMTB Spider provides a 52mm chainline for standard Bosch Gen 4 and SX motor systems. Please note that if you are using a Bosch Gen 5 CX motor, an additional spacer is required to achieve the necessary 55mm chainline.
Is the spider durable for e-bikes?
Yes, the Race Face eMTB Spider is specifically engineered for exceptional durability to meet the rigorous demands and increased loads of electric mountain biking.
Key features ensuring its reliability include:
- Material: It is constructed from high-quality Aluminum, providing a robust yet lightweight foundation.
- eMTB Built: This component is explicitly designed to handle the increased loads and forces characteristic of full-power e-bikes.
- Compatibility: It is optimized for use with demanding setups, including the Bosch Gen 4 Performance Line CX and SX motors.
- Ride Style: It is suitable for intensive Cross Country, Trail, and general E-Bike applications.
What chainring specification is compatible?
This spider is designed to allow the use of standard 104 BCD (Bolt Circle Diameter) chainrings on your Bosch Gen 4 motor. It is compatible with:
- 104 BCD 4-arm crank systems.
- Any Race Face 1x 104BCD chainring, including SHI-12 speed rings, supporting a 1x drivetrain configuration.
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