Shimano 6700 ultegra 5339t 10 speed hollowtech ii double chainset grey aluminium 170mm
The shimano 6700 ultegra 10 speed hollowtech ii double chainset offers an ideal balance of light weight and stiffness making it the perfect choice for both enthusiast and competitive riders a hollowglide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance even under high load
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