
Specialized S-Works Mtn Chainring Set Double 42/28 T Features
Chainring Bolts not Included.
- 7075 T6 Aluminium alloy rings,
- Ni Boron low friction surface coating improves shifting performance and reduces wear
- CNC Machined profile and p/up ramps,
- Rivited stainless steel shift pins.(SN:0629-1129) (172466-490)