E Thirteen E Spec Plus Chainguide 2025

Ethirteen E*Spec Plus Chain Guide: Premium protection for your e-bike drivetrain

The E*spec Plus chain guide is specifically designed for e-MTBs. Built to withstand the power and stresses of e-bikes while maintaining quiet performance, it covers chainrings from 34 to 38 teeth and mounts on ISCG tabs for a secure fit.

The construction of this chain guide combines an injected carbon composite backplate that offers maximum strength at a low weight (~39 g), and a top slider compliant with ISO standards, designed to guide the chain, keep it in place, and prevent clothing or branches from getting caught in the drivetrain. This slider is adjustable to fit different chainlines: non-Boost, Boost, SuperBoost via the supplied spacers (4.5 mm and 1 mm), ensuring wide compatibility.

Delivered with ISCG bolts, chainline spacers, and of course a user manual, this guide is ideal for e-bike riders who want to ride freely without worrying about dropped chains or drivetrain noise. The sleek black color ensures discreet aesthetics, while premium materials guarantee a high level of reliability even during the most demanding rides.

Features

• Model: E*Spec Plus
• Backplate material: Nylon Composite
• Mount: 2 bolts on ISCG05 system
• Chainring capacity: 34 to 38 teeth
• Chainline: Non-Boost, Boost, SuperBoost (via spacers)
• Color: Black
• Compatibility: Not compatible with Sram T-Type drivetrains
• Top guide: ISO-compliant and adjustable
• Motor compatibility
    - Shimano EP8 / E8000 / E7000
    - Bosch CX Gen 4

Weight

• 78 g for Bosch Gen 4 version
• 82 g for Shimano EP8/E8000/E7000 version

Included

• E*Spec Plus chain guide
• 2 bolts for ISCG05 mount
• 1 mm and 4.5 mm spacers (Bosch version only)
• User manual