The Shimano Altus derailleurs and shifters had been made within the late 70s and early 80s. They had been decrease high-level elements that may examine to as we speak 105 or Tiagra. I had this group on my 1981 Schwinn Tremendous Le Tour.
Rear Dearailleur


Capability: Entrance Distinction – 13 tooth, Rear Largest Sprocket – 28 tooth
Weight: 262 grams
Materials: mild alloy/metal
Entrance Derailleur


Capability: 14 Enamel
Weight: 122 Grams
Materials: mild alloy/metal
Down Tube Shifters


Sort: Friction
Weight: 85 grams
Materials: mild alloy/metal