The 2008 Opus Sonar is a 31 pound a mountain bike with an aluminum frame. The frame has a Satin Black finish. The Sonar is a is a fairly heavy bike at around 30 pounds. It was released in 2008. The Sonar has fork suspension with 75mm travel.
Components
The Sonar comes with Mountain Mix components, including an Ora stem, a VP headset and Shimano ST-EF60 shifters.
Drivetrain
The Sonar has 7 speeds and has a Shimano derailleur.
Wheels
It comes with CST tires (26in x 2in) and Alex DM-18 rims.