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BOSCH G4 e-MTB Chainring - SHI 12

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Built to Endure

Tough steel construction is strong and hard-wearing with enough stiffness for all your eMTB torque needs. Its narrow wide tooth profile is SHI 12 speed compatible and provides secure chain retention.

Minimalist Approach

Designed to mount directly to Bosch Gen 4 Performance Line CX motor. Two sizes and two chain lines to ensure the right fit.

E-asy Peasy

Our super strong steel Bosch Gen 4 ring mounts directly to Performance Line CX and SX e-bike motors, offering a minimalist look and long-wearing performance. Two ring sizes and two chain lines plus our NW tooth profile means you’re always pedaling smooth, even when the trail gets rough.

BOSCH G4 e-MTB Chainring - SHI 12

Regular price $23.99

Unit price per 

Chain Line (mm) 52

Ring Size 34T

Free Shipping Over $49. Doesn't Fit? Ship it Back.

Lifetime Warranty, Crashes Included.
BOSCH G4 e-MTB Chainring - SHI 12
BOSCH G4 e-MTB Chainring - SHI 12

Specs

Compatible With Bosch Gen 4 & 5 Performance Line SX and CX motors
Material Steel
Ring Style Direct mount
eMTB Built Built for compatibility constraints and increased loads/forces of full-power e-bikes.

Customer Reviews

Based on 4 reviews
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H
Helmut O.

Nachdem ich aus dem Datenblatt die technischen Daten meines bike in die raceface Datenbank eingegeben habe, war ich sicher, das richtige Modell geordert zu haben. Nach Erhalt stellte sich aber der Offset von 55 als falsch heraus und lässt sich auch nicht korrigieren. Eine Modell Datenbank wäre bei der Auswahl hilfreich.

J
Jörg F.

Bestes Kettenblatt für Shimano XT 12fach. Hier bekommt man ein Kettenblatt welches keine Wünsche offen lässt und wirklich optimal mit dem Shimano System harmoniert. Der Antriebsstrang läuft endlich Störungsfrei und Geräuscharm.

J
Josef W.

Schnelle Lieferung und Qualität wie man sie sich wünscht !

J
John H.

I was searching for a larger ring to gear up my Rail but the chain stay clearance is a concern with regular Boost rings. This 55mm CL ring solves that issue with plenty of room to spare. The upper guide will need a little shimming but after 400 miles it has worked great. Can we get a 38T version in the future? Thanks.

Frequently asked questions

Which Bosch e-bike motors are compatible with this chainring?

This chainring is precision-engineered for high-torque e-MTB use, featuring a durable steel construction and a direct-mount interface. It is specifically compatible with the following Bosch motor systems:

  • Bosch Performance Line CX (Gen 4 and Gen 5)
  • Bosch Performance Line SX (Gen 4 and Gen 5)

Designed for demanding off-road conditions, this chainring ensures excellent stiffness and long-lasting wear resistance when paired with Shimano 12-speed drivetrains.

Is this chainring durable for high-torque e-MTB use?

Yes, this chainring is engineered for long-wearing performance specifically in high-torque e-MTB environments. It is constructed from super strong, high-grade steel designed to withstand the increased power and unique load demands of Bosch Gen 4 Performance Line CX and SX motors. Additionally, its specialized NW (Narrow Wide) tooth profile ensures a smooth, reliable, and quiet drivetrain experience even when riding on rough, demanding terrain.

Is the 55mm chain line suitable for enduro bikes?

Yes, the 55mm chain line option is specifically recommended for aggressive trail and enduro riders. It provides the additional chainstay clearance often required on these frames to ensure optimal drivetrain alignment and performance.

Is this chainring quiet with Shimano systems?

Yes, this chainring is highly compatible with Shimano 12-speed systems.

  • It is engineered for SHI 12 speed compatibility using a Narrow Wide tooth profile for secure chain retention.
  • Customer reviews specifically highlight that the chainring runs optimally, quietly, and trouble-free when paired with drivetrains like the Shimano XT 12-speed.
Does it offer secure chain retention?

Absolutely! It features a Narrow Wide (NW) tooth profile that is specifically compatible with SHI 12-speed systems, ensuring excellent and secure chain retention even on rough terrain.

Does this chainring offer sizing flexibility?

Yes, this chainring is available with optimized fit options to ensure compatibility with various e-bike frames and setups. You can choose between two key specifications:

  • Ring Size: Available in 34T and 36T.
  • Chain Line: Available in 52mm and 55mm.

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