ethirteen Helix Core e*spec DM Chainrings – TQ® / Shimano

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Durable and affordable steel e*spec chainrings for TQ and Shimano motor systems with 55mm chainline.

Helix Core e*spec TQ and Shimano Direct Mount Chainrings feature our improved M4 narrow-wide tooth profiile, for excellent chain retention, longer wear-life, and cross compatibility with Shimano and Sram drivetrains, including T-type. Designed to produce a 55mm chainline, with Shimano and TQ motor systems, these rings deliver awesome value, durability, and performance.  

Benefits & Tech Specs

  1. 12mm offset for TQ HPR50, 21.5mm offset for Shimano EP8, produces 55mm chainlines
  2. Long-lasting and economical steel construction
  3. M4 narrow-wide tooth profile for excellent chain retention and Shimano/Sram drivetrain compatibility
  4. Compatible with Sram T-type chains
  • Size: 32T
  • Compatibility (Crank/Motor): TQ HPR50, Shimano EP8
  • Chain line: 55mm
  • Offset:
    • TQ HPR50: 12mm Offset
    • Shimano EP8: 21.5mm Offset
  • Speeds: 11/12s
  • Chain Retention: M4 narrow-wide
  • Chain Compatibility: Shimano/SRAM 11/12s
  • Material: Steel
  • Weight:
    • TQ HPR50: 94g
    • Shimano EP8: 113g
  • Colors: Black

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