Shimano SLX M660 Hollowtech Chainset
With a composite/steel middle chainring, which Shimano reckon will double its life expectancy with no increase in weight, Hollowtech cranks get better and better.
- Super-rigid forged aluminium hollow crank arms.
- Comes complete with bottom bracket for 68 and 73 mm frames
- SLX HollowTech II chainset is tough and aggressive yet also lightweight and excellent value
Options
- 10-speed Dyna-Sys, for use with 10-speed HG-X MTB chain.
- 9-Speed SGX, for use with 9-Speed super narrow chains
