E-Thirteen Helix Crank Arms - 175mm - 24mm - 68-73mm - E-Thirteen Direct Mount - No Spider - No Chainring - Black YGroup_7035317289005 By adding the Water-Repellent functional

By adding the Water-Repellent functional parts to prevent mud and dust flow into the seat tube the Mark 3 was created

Diameter: Available in either small (30mm) or large (32mm) diameters

FlexTight bracket

Brake caliper compatibility: Hayes' Dominion A4 4-Piston brake calipers

Complies with PPE Directive (EU) 2016/426

E-Thirteen Helix Crank Arms - 175mm - 24mm - 68-73mm - E-Thirteen Direct Mount - No Spider - No Chainring - Black YGroup_7035317289005 By adding the Water-Repellent functionalThe Helix crank arms from E*Thirteen combine forged AL 6066 T6 aluminium alloy arms with a heat treated 24mm Cro Mo spindle to deliver a super cost effective, performance crank that is light and strong and suitable for most MTB pursuits. Features: Lighter weight for improved acceleration and climbing Strong enough to shuttle run bike parks Durable aluminium alloys for years of trust and confidence Can be combined with either Shimano or SRAM 11 and 12