E*thirteen e*spec Chain Guide
Best drivetrain security for aggressive e-bike riders on Shimano systems.
This is the insurance policy your e-bike drivetrain needs when the trail gets rowdy. By locking the chain onto your ring, it eliminates the frustration of mid-ride drops. You sacrifice a tiny bit of weight for the peace of mind that your power transfer stays consistent, no matter how hard you push.
$41.99
Who it's for
- Aggressive riders needing reliable chain security on high-torque e-bikes
- Shimano E8000 owners seeking a clean, factory-integrated installation
- Riders who frequently swap chainrings for different terrain demands
Who should skip it
- Owners of newer Shimano EP8 or other non-E8000 motor systems
- Riders sensitive to drivetrain friction or minor operational noise
- Mechanics who prefer simple, unobstructed drivetrain maintenance routines
Performance breakdown
Retention Reliability
Virtually eliminates chain drops even on the most aggressive, technical descents.
Motor Compatibility
Precision-engineered specifically for the Shimano E8000 motor mounting interface.
Build Durability
Rugged construction withstands heavy trail abuse and high-torque e-bike loads.
Installation Simplicity
Straightforward mounting process gets you back on the trail quickly.
Drivetrain Drag
Minimal friction ensures smooth pedaling efficiency throughout your ride.
Chainring Versatility
Limited to 34-38t rings, restricting options for smaller or larger setups.
Key Specs
Compatibility
Shimano E8000 motors
Chainring Compatibility
34-38 tooth (t)
Model Number
CG3UPA-101
Target Gender
Unisex
Know before you buy
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