The SRAM Eagle 90 eMTB Bosch Transmission Groupset offers robust mechanical shifting with Full Mou...The SRAM Eagle 90 eMTB Bosch Transmission Groupset offers robust mechanical shifting with Full Mount derailleur architecture for maximum strength and precision. Designed for e-bikes, it features a durable, rebuildable design with replaceable components for extended lifespan and reduced service costs. The forged aluminum E-MTB crankset ensures solid power transfer, complemented by a T-Type chainring for seamless integration. Shifting is crisp and consistent under load, thanks to the double-click T-Type shifter and X-SYNC cassette. Key features include a hangerless UDH interface for a secure fit, tool-free cage assembly for easy maintenance, and a four-step setup process that eliminates the need for limit screws or b-tension adjustments. This groupset prioritizes reliable performance, smooth shifting, and simple service without electronic complexity, making it ideal for riders seeking dependable drivetrain stability for every ride. Available in specific offsets for Bosch drive units and various crank arm lengths (160mm, 165mm, 170mm).
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Full details
The SRAM Eagle 90 eMTB Bosch Transmission Groupset is designed for electric mountain bikers seeking robust mechanical shifting, exceptional strength, and precision. Its key benefit lies in its durable, rebuildable design with replaceable components, ensuring extended lifespan and reduced service costs. A potential caveat is its specific compatibility with Bosch drive units, requiring careful selection for other e-bike systems. This groupset offers seamless integration with T-Type components, a hangerless UDH interface, and a simplified four-step setup process, prioritizing reliable performance without electronic complexity.
All features
Model Part Number
SGS8337004
Brand
SRAM
Extended Product Information
FAQs
Is this groupset compatible with non-Bosch e-bikes?
No, this specific version is optimized for and designed to work with Bosch e-bike drive units. SRAM offers other configurations for different drive systems.
What makes the setup process 'four-step'?
The simplified setup eliminates traditional limit screw and b-tension adjustments. It guides users through essential alignment and tensioning steps for quick and accurate installation.
Can I replace individual parts of the derailleur?
Yes, the derailleur is designed to be rebuildable with easily replaceable components, such as the cage, which can reduce service costs and extend its usable life.
Do I need special tools for installation?
While standard bike tools are required for mounting the crankset and derailleur, the cage assembly is tool-free, simplifying maintenance tasks.
What is the benefit of the hangerless UDH interface?
The hangerless Universal Derailleur Hanger (UDH) interface provides a more robust and secure mounting point for the derailleur, enhancing drivetrain stability and reducing the chance of damage.
How does this mechanical shifting compare to electronic shifting?
This groupset provides strong, consistent mechanical shifts with the advantage of simplicity and durability. Electronic shifting offers push-button precision but involves more complex systems and potential failure points.
Troubleshooting
Shifting is imprecise or hesitant.
Ensure the T-Type chain and cassette are properly installed and aligned. Check that the UDH interface is securely fastened and the derailleur cage is properly seated. Clean the drivetrain thoroughly.
Derailleur cage is damaged or bent.
The derailleur cage is designed for tool-free replacement. Refer to the SRAM technical documentation for the specific procedure to remove the damaged cage and install a new one.
Crank arm feels loose.
Check the crank bolt and ensure it is tightened to the manufacturer's specified torque. If the issue persists, inspect the bottom bracket and crank spindle for damage.
Chain drops frequently.
Verify that the T-Type chainring is correctly installed and that the chain is the appropriate length and tension. Ensure the derailleur is aligned correctly with the cassette.
Pros and Cons
Pros
Exceptional mechanical strength and shifting precision.
Designed for durability with easily replaceable parts, lowering long-term costs.
Simplified setup process requiring no limit screws or b-tension adjustments.
Seamless integration with T-Type chainring for optimal performance.
Tool-free cage assembly for convenient maintenance.
Cons
Specifically designed for Bosch e-bike drive units, limiting cross-compatibility.
Mechanical shifting may not appeal to riders seeking electronic precision.
Requires specific T-Type chainring and cassette for full functionality.
Higher initial investment compared to standard mechanical groupsets.
Setup, Compatibility & Care
Setup:
Mount the crankset and chainring, ensuring correct chainline for your Bosch drive unit. Specific offsets are available for Bosch systems.
Install the T-Type cassette and chain.
Attach the Full Mount derailleur using the UDH interface. The tool-free cage assembly can be used here if replacing a cage.
Follow the simplified four-step process to set the shifting, which does not involve limit screws or b-tension adjustments.
Compatibility:
This groupset is specifically designed for e-bikes equipped with Bosch drive units.
Requires compatible T-Type chainring and chain.
Utilizes the Universal Derailleur Hanger (UDH) interface.
Available in crank arm lengths of 160mm, 165mm, and 170mm.
Care:
Regularly clean the chain, cassette, and derailleur with a degreaser and brush.
Inspect for wear on the chain and cassette; replace as needed to maintain shifting performance.
The rebuildable design allows for replacement of individual components like the derailleur cage if damaged or worn.