The 2000 Boulder Bikes Sirius is a 46 pound a full-suspension tandem/recumbent bike with an aluminum Works Performance/Boulder Bikes Spring/Oil frame. The frame has a Buyer's  Choice finish.

The Sirius is a is a heavier bike at around 45 pounds. It was released in 2000 and costs $5,499 brand new.


The Sirius comes with various tandem bike components, including a RANS Tilt Bar-Stem Combo stem, a threadless Chris King NoThreadSet headset and SRAM Quartz shifters.


The Sirius has 7 speeds and has a Shimano derailleur.


It comes with tires (20in x 1.5in) and Sun Rims CR18 rims.

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Type Tandem, Recumbent
MSRP $5,500
Year 2000
Alt. Names Sirius