E-Ring 104 BCD MTB eBike Chainring

Praxis MTN E-Ring – 104BCD Threaded Steel

Cold-forged from 4130 high-grade steel, these MTN E-Rings are built specifically for e-MTB applications, offering durability and long-lasting performance.

The rings are threaded (‘female’) for M8 chainring bolts, allowing the bolt to thread directly into the 104BCD ring for improved motor clearance. Designed with a narrow/wide tooth profile, they maintain excellent chain retention on modern 1x drivetrains.

Features

• Cold-forged 4130 high-grade steel with black oxide finish

• Narrow/Wide tooth profile

• Threaded for M8 chainring bolts to improve motor clearance

• Compatible with 104BCD e-MTB spiders (not compatible with 94BCD)

• Compatible with Shimano, SRAM, and KMC 10 / 11 / 12-speed chains

• Works with both mechanical and electronic drivetrains:

  • Shimano: mechanical and Di2 10/11/12-speed

  • SRAM: mechanical and wireless 10/11/12-speed

Specifications

• Available Sizes: 32T / 34T / 36T

• Average Weight: 32T – approx. 98 g

• Mounting: Logos always face outward

Important Notes

• Must be used with a clutch-style derailleur (e.g., Shimano Shadow or SRAM Type 2)

• For rough terrain or added security, an upper chain guide is recommended

• Ensure the spider is 104BCD, not 94BCD

This ring is ideal for refreshing gearing or upgrading your 104BCD e-MTB spider while maintaining clearance and drivetrain performance.