The Shimano STEPS EP6 DU-EP600 is a high-performance mid-drive unit that brings flagship-level torque and intelligent assist to a broader range of e-mountain bikes. Delivering a powerful 85 Nm and 250W of continuous rated output, it provides a natural, responsive pedalling feel with minimal noise — ideal for trail riders who want a capable, confidence-inspiring system without compromise.

Highlights

• 85 Nm of torque: Matches the flagship EP8 in maximum torque output, delivering powerful and responsive assist across all terrain.
• Smooth, natural assist: Lightweight and compact motor design produces a quiet, refined power delivery that feels like an extension of your own pedalling.
• FINE TUNE MODE: Dial in up to 15 customisable assist characters via the E-TUBE PROJECT app, letting you shape each mode precisely to your riding style and terrain.
• CAN and ACC connectivity: Expanded system ports enable integration with third-party components and accessories for a fully tailored e-bike build.
• Di2 electronic drivetrain support: Works with DEORE XT Di2, CUES Di2, and LinkGlide Di2 — enabling FREE SHIFT (changing gear without pedalling) and AUTO SHIFT with manual override.
• Second-generation battery compatibility: Supports Shimano's 2nd-gen battery management system for improved energy efficiency and system communication.
• Four assist modes: Walk, Eco, Trail, and Boost — each fully customisable via the E-TUBE PROJECT Cyclist app.
• Wireless connectivity: Communicates with Shimano displays, batteries, and sensors over the E-TUBE wireless network.

Performance & Ride Feel

Engineered for e-MTB performance, the EP6 drive unit produces assist that responds fluidly to your cadence and input. The compact, cast-aluminium housing keeps weight manageable at 3.0 kg while housing a motor tuned to reduce mechanical noise on the trail. Eco, Trail, and Boost modes each deliver progressively more support, and Walk mode provides convenient low-speed assistance when pushing your bike uphill or through technical sections.

Connectivity & Customisation

The DU-EP600 integrates into Shimano's E-TUBE ecosystem, enabling wireless pairing with compatible displays, remote switches, and batteries. Using the free E-TUBE PROJECT Cyclist app, riders can adjust the assist character of each mode — tweaking torque output, acceleration response, and assist start level. Over-the-air firmware updates keep the system current. The addition of CAN and ACC ports expands accessory compatibility beyond the core STEPS system.

Compatibility & Fit

The DU-EP600 is a mid-ship position drive unit designed for integration by e-bike manufacturers. It is compatible with Shimano e-bike crank arms (such as the FC-EM600) and Shimano's dedicated e-bike chainring interface. The system supports DEORE XT Di2, CUES Di2, LinkGlide Di2, and compatible mechanical drivetrains, as well as internal hub gear systems. Speed limit: 25 km/h (EU/AU standard). Rated voltage: 36V DC. This unit is the 2nd generation DU-EP600, featuring expanded CAN and ACC ports and compatibility with Shimano 2nd-generation batteries.