In 1990 Shimano’s mid range 105 groupset was renamed ‘105 SC‘ and received what became known as the champagne painted silver finish. This double crankset comes with a standard road 52/39 chainring combination with round (not BioPace!) SG rings, designed for 7 speed the groupset would later be bumped up to 8 speed, the chainset remained the same so you will have no problem running this with either 7 or 8 speeds, or 6 for that matter. The square taper chainset requires a 113mm axle if running a British thread BB (we have the correct 105 BB available in stock) or a 115mm axle if using an Italian BB.
- Crank arms are 170mm long
- 52/39 130BCD hainrings
- Complete with plastic dust caps
- Standard 9/16″ pedal thread