The Shimano Dura-Ace FC-R9200 12-Speed Double Chainset with HollowTech II technology offers the optimum balance of lightweight and rigidity, making it the global choice for road racing's elite riders.Shimano Dura-Ace FC-R9200 12-Speed Double Chainset FeaturesHollow outer chainring, giving vast improvements in rigidity and increased weight savingsThe hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high loadThese industry-leading HollowTech II 4 arm cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, and improve strengthThe teeth have been developed to work only in conjunction with...
Best Price: £549.99 from Leisure Lakes Bikes