Premium Wireless SRAM XX Eagle Transmission Groupset for High-Performance E-MTB Riding
The SRAM XX T-Type Eagle E-MTB Transmission AXS Groupset 104BCD is a premium wireless drivetrain package engineered to deliver a refined balance of strength, low weight and durability for demanding electric mountain bike use.
Built around SRAM’s next-generation Eagle Transmission platform, the XX system takes a fully integrated approach to shifting, with the derailleur, cassette, chain and AXS controls designed to work together as one complete drivetrain.
The result is smooth, stable and dependable shifting under heavy load, including the high torque generated by both rider and motor on steep climbs and technical terrain.
This 104BCD version is supplied without crank arms, making it ideal for compatible e-MTB setups where an existing or separately selected crankset is retained.
Designed for High-Performance E-MTB Use
The SRAM XX Eagle Transmission platform is built for riders who need serious durability without carrying unnecessary weight. It is particularly well suited to long enduro days, aggressive trail riding and high-output e-MTB applications where drivetrain components are repeatedly exposed to large loads.
XX Eagle AXS T-Type Rear Derailleur
At the heart of the groupset is the SRAM XX Eagle AXS T-Type rear derailleur. Designed as part of the integrated Transmission system, the derailleur works directly with the cassette and chain to provide precise wireless shifting across demanding terrain. AXS electronic operation removes the need for a conventional shift cable and helps create a cleaner cockpit setup.
Shifting Under Load
One of the defining advantages of Eagle Transmission is its ability to shift cleanly while the drivetrain is under significant load. The XX cassette uses X-SYNC technology together with carefully engineered cassette mapping to control chain movement during gear changes.
This allows the system to maintain smooth, uninterrupted shifting even during peak torque from both rider and e-bike motor.
XS-1297 T-Type 10-52T Cassette
The groupset includes the SRAM XX XS-1297 T-Type cassette with a wide 10-52T gear range. This provides the climbing range needed for steep technical terrain while retaining a 10-tooth smallest sprocket for faster trail sections and descents. The cassette is specifically designed to work with the T-Type chain and derailleur as one synchronised system.
XX Transmission Flattop Chain
The included XX Eagle Transmission Flattop Chain is engineered specifically for SRAM’s Transmission architecture. Its distinctive flat-top profile is designed to improve shifting performance, chain stability and drivetrain durability.
Overall system integration
The design also gives the drivetrain a clean, modern appearance suited to premium e-MTB builds.
AXS Pod Ultimate Controller
Shifting is controlled through the included AXS Pod Ultimate Concave controller. Its compact two-button “click and fire” interface provides intuitive operation and allows riders to personalise control functions across compatible AXS components. The concave button layout is designed to provide a precise and comfortable contact point on the handlebar.
Wireless AXS Control
The complete shifting system operates wirelessly through SRAM AXS. This eliminates conventional mechanical shift cables and provides precise electronic gear changes with a clean cockpit layout. The groupset includes both an AXS battery and charger.
104BCD E-MTB Configuration
This version is identified as the 104BCD configuration, making it suitable for compatible e-MTB chainring and crank arrangements using that interface.
Always confirm motor, crank, chainring and frame compatibility before installation.
Aeroguard Included
The supplied specification includes an Aeroguard, providing additional protection around the chainring area on compatible setups. The wider XX E-MTB platform also supports bashguard configurations for added protection on rough and rocky terrain.
Cranks Not Included
Please note that crank arms are not included with this groupset.
Although SRAM’s wider XX Eagle Transmission E-MTB range includes Bosch and Brose crank options, this 104BCD groupset should be paired with the correct separately supplied crank and chainring configuration for your bike.
Power Meter Variant Available
A power meter variant exists within the wider SRAM XX Eagle Transmission range. This groupset specification does not state that a power meter is included, so riders looking for power measurement should confirm the exact crank and chainring configuration required separately.
Ideal for Enduro and Trail E-MTB Riding
The SRAM XX Eagle Transmission groupset is particularly well suited to enduro e-MTB, trail e-MTB, aggressive electric mountain biking, high-torque motor systems, technical climbing, long-distance trail riding and premium SRAM Transmission upgrades.
Key Features
- SRAM XX Eagle E-MTB Transmission groupset
- T-Type drivetrain architecture
- Wireless AXS electronic shifting
- XX Eagle AXS T-Type rear derailleur
- XS-1297 T-Type 10-52T cassette
- XX T-Type Flattop chain
- AXS Pod Ultimate Concave controller
- Designed for shifting under heavy load
- X-SYNC technology
- Wide 10-52T gear range
- Fully integrated Transmission system
- AXS battery included
- Battery charger included
- Aeroguard included
- Bashguard compatible
- 104BCD configuration
- Power meter variant available separately
- Designed for high-performance E-MTB use
- Crank arms not included
SRAM XX Eagle Transmission AXS | Lightweight Strength for Demanding E-MTB Riding
The SRAM XX T-Type Eagle E-MTB Transmission AXS Groupset 104BCD is designed for riders who want premium wireless shifting, high-load durability and reduced weight in one integrated drivetrain system.
Its XX AXS derailleur, 10-52T T-Type cassette and dedicated Flattop chain work together to deliver clean shifting under heavy torque, while the Pod Ultimate controller provides precise and customisable wireless control.
With an AXS battery, charger and Aeroguard included, this groupset provides the core components needed to upgrade a compatible electric mountain bike to SRAM XX Eagle Transmission while allowing the correct crankset to be selected separately.
If you're searching for a SRAM XX Eagle Transmission groupset, XX AXS e-MTB groupset, T-Type 10-52T drivetrain or 104BCD SRAM electric mountain bike upgrade, this package offers a premium combination of strength, low weight and wireless performance.