Description
- Hyperglide 10-Speed chain
- Ultegra 6600 chain is recommended for use in conjunction with Ultegra 6703 and 105 5703 triple
- Optimized chain for HG sprocket which provides a fast and precise rear shifting performance (especially during downshifts)
- Chromized rivet pins improve wear resistance
- Zinc-alloy plated outer link surface treatment
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