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Lewis 34T 30T 8 Bolt 3 Bolt Aluminium Chainring for MTB EMTB & Gravel | 3mm 6mm Offset Narrow Wide

Lewis 34T 30T 8 Bolt 3 Bolt Aluminium Chainring for MTB EMTB & Gravel | 3mm 6mm Offset Narrow Wide

Regular price $75.93 SGD
Regular price Sale price $75.93 SGD
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Lewis ALU Chainring: Trail-Proven Strength with eMTB Compatibility

When every watt counts and durability is non-negotiable, the Lewis ALU Chainring delivers. Precision CNC’d from 7075-T6 aluminum with a hollow-core structure, this chainring punches far above its weight class — built for high-torque eMTB abuse and analog pedal power alike.

  • Material: 7075-T6 CNC Aluminum

  • Coating: Lewis Proprietary High-Abrasion-Resistant Finish

  • Mount Interface:
     - SRAM 3-Bolt – Standard on most SRAM Eagle DUB cranks
     - SRAM 8-Bolt – Used on SRAM T-Type Transmission cranks, Quarq power meters, and select eMTB motors

  • Sizes Available:
     - 3-Bolt 30T – 3mm Offset
     - 3-Bolt 34T – 3mm Offset
     - 8-Bolt 34T – 3mm Offset
     - 8-Bolt 34T – 6mm Offset

eMTB-Ready:
The Lewis ALU Chainring is fully compatible with several SRAM-based eMTB systems — including:

  • Brose/Specialized SL 1.1 & 2.2 motors with SRAM 3-bolt cranks

  • TQ HPR50 systems using SRAM 8-bolt mounting

  • Bafang M500/M600 with SRAM crank conversion

  • Bosch CX (2023+) and Performance Line SX via third-party SRAM 3/8-bolt adapters

  • Rocky Mountain Dyname systems with SRAM interfaces

Offset Explained:

  • 3mm Offset → Optimized for Boost (148mm) chainlines — ideal for most modern eMTB frames

  • 6mm Offset → Suited for non-Boost or fine-tuning chainline on custom builds, including narrow Q-factor setups

Mounting 101:

  • If you're riding a full SRAM analog drivetrain (GX/NX/XX1, etc.), grab the 3-bolt.

  • If you're running a Transmission, Quarq, or a new-gen eMTB with an 8-bolt spider, you're covered too.


Bottom line: Whether it’s watts from your legs or from a 250W motor, the Lewis ALU Chainring holds the line. Lightweight. Ultra-durable. eMTB-approved.

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