This mechanical Eagle Transmission drivetrain delivers precise shifting under load in a strong, serviceable design. Built around a Full Mount derailleur with replaceable parts, it pairs an E-MTB specific forged aluminum crankset and T-Type chainring with an X-SYNC cassette and double-click shifter. Simple four step setup with no limit screws or b-tension makes installation fast and hassle free, while durability and performance keep you riding further with confidence.

Components Included

• Eagle 90 E-MTB Crankset
  
  E-MTB specific crank arm lengths
• Versions available for SRAM Powertrain, Brose, and Bosch drive systems
• Compatible with the latest Bosch CX BDU38 motors
• Removable GapGap spacer for fitment with other ISIS spindle motor systems

Specs

• Crank arm length: 165mm // 175mm
• Speeds: 12, 12s T-Type
• Chainring: 36T DM
• BB Spindle Interface: ISIS
• Weight: 490g (cranks)
• SRAM Model ID: FC-90-PA-A1
• Eagle 90 Transmission Derailleur
  
  T-Type mechanical cable actuation for crisp, precise shifting
• Full Mount design for maximum strength and durabilit
• Highly serviceable construction with replaceable links, skid plates, and tool free cage assembly

Specs

• Speed (RD): 12
• Max tooth: 52
• Cage material: Aluminum
• Drivetrain Configuration: 1x
• Chain Technology: T-Type
• Weight: 395g
• SRAM Model ID: RD-90-A1
• XS-1275 Eagle Transmission Cassette
  
  Full X-SYNC T-Type design for smooth, precise shifting under load
• Optimized 520 percent gear range with improved low-end steps
• 55mm chainline compatibility for better chain alignment
• Clearly marked Setup Cog for fast, error-free installation

Specs

• Speed (CS): 12
• Gearing: 10-52t: 10,12,14,16,18,21,24,28,32,38,44,52
• Chain Technology: T-Type
• Rear Derailleur Mount: Full Mount
• Weight: 445g
• SRAM Model ID: CS-XS-1275-A1
• GX Eagle Transmission Flattop Chain
  
  Strongest SRAM chain ever
• Specifically engineered for Eagle Transmission
• Flattop profile, unbelievable shifting performance, game-changing aesthetics

Specs

• Speed (CN): 12
• Chain length: 126 links
• Chain connector: PowerLock 12s T-Type BLK
• Inner link finish: Chrome Hardened
• Outer link finish: Nickel
• Pin variant: Solid Pin
• Chain Technology: T-Type
• Weight: 285g (126links)
• SRAM Model ID: CN-TTYP-GX-A1
• Eagle 90 Transmission Shifter
  
  Single-click mechanical actuation for safe e-bike use
• Premium textured aluminum shift lever with modern ergonomics
• Optimized cable friction management for consistent feel
• Clean cockpit design with integrated housing and brake hose clip

Specs

• Speeds: 12
• Cable pull ratio: T-Type Actuation
• Cable length: 220cm
• Shifter type: Trigger
• Clamp: Included
• Drivetrain Configuration: 1x
• SRAM Model ID: SL-90-PA-A1

Technology

X-SYNC

SRAM X-SYNC 1x chainrings provide the highest level of performance and durability. The SRAM X-SYNC tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC chainrings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC rings are an integral part of the SRAM 1x drivetrain. Accept no imitation.

EALGE

Eagle technology represents our newest 1x drivetrain technology. Eagle is a lighter, simpler, more durable, and easier to use drivetrain. Eagle features all-new 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 520%, which is equal to 2x11 drivetrains.

FLATTOP

To enable X-Range gearing technology, we developed a narrower chain. The unique link shape of Flattop technology not only allowed for a wider gear range, but also results in quieter drivetrain operation and increased chain strength and durability.

MINI CLUSTER

The MINI CLUSTER hybrid cassette construction combines four small cogs that are CNC machined out of a single block of billet steel with an additional eight cogs that are individually pinned together. The result: a cassette that’s light, durable and equipped with a gear range that’s a perfect fit for any ride.

Specifications

• Guard: Included
• Tools: Not included
• SRAM Model ID: GS-90-PA-A1