Chainguide FSA E-Bike Bosch Gen4 32-42T EL357

Chainguide FSA E-Bike Bosch Gen4 32-42T EL357

The FSA EL357 chainguide is designed for e-bikes with the Bosch Gen4 motor system, where secure chain retention is especially important. E-bike drivetrains operate under higher loads than standard bicycle drivetrains, so a reliable chainguide helps reduce the risk of chain drop and improves riding confidence.

This model is compatible with 32–42 tooth chainrings and is designed for 50 and 52 mm chainlines. That makes it a practical component for servicing, replacement or upgrading the drivetrain of a compatible Bosch Gen4 electric bike.

Weighing only 35.6 g, the chainguide adds minimal weight while providing valuable extra security on trails, gravel roads and everyday rides. Its compact design fits neatly around the e-bike motor area and helps keep drivetrain performance stable on uneven terrain.

• Product: chainguide
• Brand: FSA
• Model: EL357
• Discipline: e-bike
• Compatibility: Bosch Gen4
• Tooth capacity: 32–42T
• Chainline: 50 / 52 mm
• Weight: 35.6 g