The SHIMANO STEPS SM-CDE70 is the reference chain guide for E-MTBs equipped with STEPS systems E7000, E8000 and EP800. Designed specifically for electric assist bikes, this device ensures perfect chain retention even in the most demanding conditions, on rough terrain, technical trails or aggressive descents. Supplied with its reinforced steel mounting plate, it mounts directly to the drive unit and guarantees impeccable stability for worry-free riding.

Available variants

The SM-CDE70 chain guide is offered in two versions to precisely match your drivetrain configuration:

• Variant for 34-38T chainrings: EAN 4524667393801 / UPC 689228393806 — designed for 34 to 38 tooth chainrings, ideal for versatile and enduro configurations.
• Variant for 36T chainring (shown here): EAN 4550170585495 — optimized specifically for 36 tooth chainrings, the perfect compromise between responsiveness and obstacle clearance.

Whichever variant you choose, you benefit from the same Shimano manufacturing quality, extended compatibility (9 to 12 speed) and the legendary robustness of STEPS components. Each version includes the steel mounting plate and mounting screws.

E-MTB performance and compatibility

• STEPS system compatible: designed for DU-EP800, DU-E8000, DU-E8080 and DU-E7000 drive units, ensuring perfect integration with your Shimano motor.
• 50 and 53 mm chainlines: adapts to modern E-MTB configurations for smooth and quiet drivetrain operation.
• Drivetrain versatility: compatible with 9, 10, 11 and 12 speed chains, covering all current STEPS groups.
• Wide-range cassettes: sufficient clearance for 11-36T to 10-51T cassettes, ideal for STEPS and Hyperglide+ single-chainring drivetrains.

Robust technical design

• Technical resin guide: high-strength composite material ensuring quiet operation, exceptional durability and optimal chain protection.
• Steel mounting plate included: direct mounting to drive unit with supplied hardware, ensuring maximum rigidity and simplified installation.
• 0-170 mm rear travel: compatible with long-travel frames, from dynamic XC to aggressive enduro, without suspension interference.
• Matte black finish: discreet and professional aesthetics blending harmoniously with the STEPS drive unit.

Technical highlights

• Optimal E-MTB retention: secure chain retention on rough terrain, drastically reducing derailment risks during impacts, compressions or obstacles.
• Vibration reduction: the resin guide absorbs vibrations from motor and terrain, extending chain life and improving riding comfort.
• Simplified installation: quick mounting to drive unit thanks to supplied plate and mounting screws, compatible with most E-MTB frames on the market.
• Minimal maintenance: materials resistant to wear, mud and debris, requiring little maintenance even under intensive use.

Use and applications

The SM-CDE70 is the essential accessory for demanding E-MTB riders: electric enduro, assisted all-mountain, electric bikepacking on rough terrain. It proves particularly effective on technical courses, where motor surges and repeated impacts put the drivetrain to the test. The 36T variant is perfectly suited for riders seeking a balance between responsiveness and obstacle clearance capability, while the 34-38T variant offers more flexibility to adapt your gearing to the terrain. With the SM-CDE70, ride with confidence: your chain stays in place, your riding gains fluidity and your STEPS equipment expresses its full potential.