Hope R22 e-Bike Bosch Gen4 Direct Mount Chainring

Hope R22 e-Bike Bosch Gen4 Direct Mount Chainring is a precision-made MTB chainring designed to deliver reliable drive performance on modern Bosch Gen 4 e-bikes, with broad drivetrain compatibility, strong chain control, and long service life. Built around a new asymmetric tooth profile and a stiff, spiderless design, it supports today’s wide-range 1x drivetrains while maintaining smooth, consistent power transfer in demanding conditions.

Key Features and Benefits:

• Asymmetric tooth profile for cross-compatibility: The tooth shape is engineered to mesh correctly with chain designs from multiple drivetrain brands and speeds. This ensures consistent engagement and smooth running across mixed setups, reducing shifting issues and drivetrain noise.
• Compatibility with 9, 10, 11 and 12-speed drivetrains: Designed to work with modern systems including SRAM T-Type and Shimano HG+, this wide compatibility removes the need for drivetrain-specific chainrings. The outcome is easier upgrades and fewer restrictions when changing components.
• Bosch Gen 4 direct mount interface with 52mm chainline: The direct mount design positions the chainring precisely for Bosch Gen 4 motors. This improves chain alignment under load, leading to more efficient power transfer and reduced drivetrain wear.
• Improved chain retention profile: The updated tooth shape holds the chain more securely during rough riding and high torque inputs from the motor. This lowers the risk of chain drop and maintains consistent drive through technical terrain.
• Enhanced mud-shedding design: Tooth spacing and shaping allow mud and debris to clear more easily as the chain rotates. This helps maintain engagement in wet conditions and reduces performance loss caused by build-up.
• Optimised performance at extreme chain angles: The profile is designed to work effectively with wide-range cassettes on modern 1x systems. This maintains smooth pedalling and stable chain control even in the largest sprockets.
• Extended usable wear window: The tooth form allows more chain wear before engagement is affected. This extends service life and delays the point at which replacement becomes necessary.
• Spiderless construction with revised leg design: Removing the spider and redesigning the mounting legs increases structural strength and stiffness. The result is more direct power delivery and reduced flex under high motor torque.
• Machined from 7075-T6 aluminium: This high-strength aluminium alloy offers an effective balance of low weight and durability. It supports long-term use without compromising structural integrity.
• Available in 34T and 36T sizes: Two tooth count options allow riders to tune gearing for terrain and riding style. This provides better control over cadence and motor assistance behaviour.

Consistent chain engagement and long-term reliability are central to what this chainring delivers. The combination of a cross-compatible asymmetric tooth profile, strong direct mount interface, and durable aluminium construction supports smooth power transfer under high torque loads while reducing wear across the drivetrain. This balance helps maintain efficiency and control as riding demands increase.

Complete your Bosch Gen 4 e-bike drivetrain with a chainring built for modern 1x systems, broad compatibility, and dependable performance where it matters most.

Specification:

• Available in 34 & 36T
• Bosch Gen 4 Direct Mount (52mm chainline)
• A new range of MTB chainrings from Hope which offer a new tooth profile compatible with all major drivetrain types along with updated spider designs.
• Compatible with 9/10/11 and 12Spd drivetrains including Sram T-Type and Shimano HG+
• Asymmetric tooth profile engineered for cross compatibility and functionality with different drivetrain systems
• Improved mud shedding capability
• Improved chain retention
• Better performance with extreme chain angles on modern 1 x drivetrains
• Tooth profile allows for more chain wear before function is compromised, extending service life
• Spiderless rings have a new leg design with improved strength and stiffness
• Machined from 7075-T6 aluminium