The Opus Sonar Jr. is a smaller version of the ever-popular Sonar mountain bike. Opus gave it a shorter crank and stem to fit smaller riders. What hasn't changed? The Sonar's great handling and affordable performance. It's a ride with plenty of street and trail cred. Hey, what else could you ask for? Features: - Lightweight frame with custom tube shaping and custom graphics - Suntour XCT 100mm fork with plenty of plush travel - 21-speed Shimano drivetrain - Frame: Meta 20 XC 6061 aluminum - Fork: Suntour XCT 100mm - Size: 26"/XS - Shifters: Shimano EF500 3 X 7 - Front derailleur: Shimano TY-500 - Rear derailleur: Shimano Altus - Brakes: Promax V-Brake - Brake levers: Shimano EF500 - Crank: Suntour XCC V2 - Chainrings: 42-34-24 - Bottom bracket: FP-B907 - Cassette: Shimano Tourney 14-28 - Chain: KMC Z51 - Headset: FPD Semi-Integrated - Handlebar: Opus Bronze 15mm Rise 31.8 - Stem: Opus Bronze - Grips/Tape: Velo Kraton - Saddle: Opus Junior - Seatpost: Kalloy alloy 27.2 X 350 - Wheels/Rims: Alex J19SK - Hubs: Joytech - Tires: Vittoria Easy Rider 26 X 1.95 - Pedals: FPD NW-420 - Weight: 30.1 lbs