Shimano Dura-Ace 12 Speed Double Chainset Heart Rate Monitor QSkin yarn: highly wicking with

QSkin yarn: highly wicking with antimicrobial properties

- Die casting aluminium body

So you can shred hard

AMPP200 Front LightCompact

Acting as a psychological stimulant

Shimano Dura-Ace 12 Speed Double Chainset Heart Rate Monitor QSkin yarn: highly wicking withDescription The HollowTech II 12 speed Dura Ace chainset offers the optimum balance of light weight and rigidity, making it the global choice for road racing's elite riders Hollow outer chainring, giving vast improvements in rigidity and increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading HollowTech II 4 arm