E-Thirteen Helix R 3-Bolt Direct Mount MTB Guidering

Proven cross-compatibility in an ultra-lightweight, durable AL-7075-T6 chainring with a highly CNC'd technical finish. Available to match Helix cassette colours. SRAM-compatible 3-bolt design.

Combine with the chain, derailleur and shifter of choice without a change in chain retention quality. Available in bold colours to match popular e*thirteen Helix Race Cassettes, Plus 35 Stems, and Quick Fill Plasma Valves.

Key features

• 3-bolt direct mount design for use with SRAM 3-bolt direct mount compatible cranks
• Cut from billet AL-7075 for strength and wear resistance
• SRAM and Shimano 11 and 12 speed chain compatible
• Extensive CNC machining for ultra-light weight (32t = 51g)
• Available in 5 bold ano colours and 4 sizes: 28/30/32/34t

Specification

• Chain retention: Updated M4 narrow-wide tooth profile — improved retention, reduced chain noise, decreased system wear
• Chainline: 3mm offset from mounting surface for 3-bolt applications
• Colour: Bronze, Naranja, Eggplant, Gray, Black, Intergalactic PVD
• Compatibility: All SRAM 3-bolt direct mount cranks or other brand cranks that use 3-bolt chainrings
• Material: AL-7075-T6 aluminium alloy
• Size: 28–34t options
• Weight: 28t 48g, 30t 50g, 32t 52g, 34t 54g