SRAM Eagle 90 E-MTB ISIS Crank Arm Set

The SRAM Eagle 90 E-MTB crank is a forged aluminum crank arm set for e-mountain bikes with ISIS spindle-based motors. SRAM designed it for the Eagle 90 Transmission e-MTB platform, focusing on robustness without excess weight.

Select it by arm length (150, 155, 160, 165 or 170mm) and cap type (Bosch, Bosch BDU38 or Brose). The cap — SRAM's GapCap — gives an integrated look on select motors and is removable for other ISIS spindle-based motor systems.

Who It's For

• E-MTB riders replacing or upgrading crank arms on an ISIS spindle motor
• Riders who want short arms (150-170mm) for pedal clearance on an e-bike
• Owners of Bosch or Brose-powered bikes who want the matching cap
• Consider a different crank if your motor doesn't use an ISIS-type spindle, or if you need a non-e-bike crankset

What to Look For

• Motor interface: ISIS spindle-based e-bike motors. Choose the cap for your motor: Bosch, Bosch BDU38 or Brose.
• Crank length: 150, 155, 160, 165 or 170mm.
• What's covered: crank arms; the listing doesn't specify a chainring, so confirm what your motor setup needs.

Key Features

Forged aluminum arms. SRAM forges these arms for strength and dependability, which matters on heavier e-bikes that put more load through the cranks.

ISIS motor interface. The arms fit ISIS spindle-based motor systems. This is the fitment gate: check your motor's spindle type first.

GapCap. On select motors the GapCap gives a clean, integrated look. It's removable, so the arms also work with other ISIS spindle-based motors.

Short-length range. Lengths run from 150 to 170mm, useful for e-MTBs where low bottom brackets make pedal strikes more likely.

Rider Intent Summary

• Biggest strengths: Forged aluminum durability, ISIS motor fitment, and short arm options.
• Tradeoffs: E-bike specific; thin spec data in the listing (no weight, chainring or speed info).
• What makes it different: Motor-specific caps for Bosch, Bosch BDU38 and Brose in one listing.

Victory's Take

We'd fit these to an e-MTB that's eating pedals on rocks, and Victory Bicycle Studio will confirm your motor's spindle and cap type first.

Specifications

• Brand: SRAM
• Model: Eagle 90 E-MTB crank arms
• Motor interface: ISIS spindle-based motor systems
• Cap options: Bosch, Bosch BDU38, Brose
• Crank lengths: 150, 155, 160, 165, 170mm
• Arm material: Forged aluminum
• Part number example: 00.6118.702.008 (155mm / Bosch); each length/cap combination has its own part number