Boulder Bikes Sirius 2000 Technical specs and features
| Brand | Boulder Bikes |
| Model | Sirius |
| First production | 2000 |
| Bike category | Tandem |
| Bike sub-category | Tandem Recumbent |
| Bike Pricing | Check price Here ==> |
| Parts And Accessories | Boulder Bikes Sirius Parts |
| Available Sizes | - Rider can adjust manually |
Wheels And Breaking System
| Bike front tire | 20 X 1.50 (inches) |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | Magura Levers Magura HS 33 Brakes |
| Hubs for disc brakes | Rear: SRAM 3x7 Front: SRAM Plasma |
| Rims manufacturer | 32-hole Sun Rims CR18 |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight Gauge DT Stainless Steel |
Frame and Body Specifications
| Frame materials | Butted With Replaceable Derailleur Hanger 7005 Aluminum |
| Frame type | TIG-welded |
| Handlebar construction | RANS Tilt Bar-Stem Combo |
| Handlebar extender | Not Available |
| Handlebar stem details | RANS Tilt Bar-Stem Combo |
| Headset size | 1 (inches) Threadless Chris King NoThreadSet |
Gearing Specs
| Bicycle chain | 1/2 X 3/32 (inches) SRAM PC-61 |
| Bottom bracket shell width | 68 (millimeters) English |
| Bottom bracket type | 122.5 (millimeters) Spindle Shimano BB-UN72 |
| Crankset parts and sizes | 38/50/60 Teeth Sugino XD600 Tandem |
| Gear shift levers | SRAM Quartz |
| Rear gear set | 11 - 30 Teeth 7-speed |
Boulder Bikes Sirius Fork System Data
| Derailleur (Front) | Bottom-pull and clamp-on 31.8 (millimeters) Shimano Ultegra |
| Derailleur (Rear) | Shimano XTR SGS |
| Fork material | Triple-clamp Crown Aluminum and chromoly |
| Fork type | 1.0 (inches) Travel Ballistic 600 XL |
Other Specs of Boulder Bikes Sirius
| Component group sets | Recumbent Mix |
| Available colors | - All colors available |
| Weight | Not Available |
| Pedals details | Optional |
| Rear shock absorber | 3.0 (inches) Travel Works Performance and Boulder Bikes Spring and Oil |
| Saddle seat | RANS Recumbent Seat |
| Seat post extension | Control Tech Control Post |
Boulder Bikes Sirius picture
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Boulder Bikes produced the Sirius bike in 2000 and can be classified as a Tandem bicycle, this exact model costs in american market arround $5,499.00.
Boulder Bikes Tandem Sirius can be found in a few colors, among these colors All colors available .
This bike is equiped with 20 x 1.50" tires and DT stainless steel spoke wheel while the rims are manufactured by Sun Rims CR18, 32-hole. Boulder Bikes equiped this exact model with Magura HS 33 brakes, Magura levers braking system and Front: SRAM Plasma, Rear: SRAM 3x7 hubs.
To guarantee the comfiest ride Boulder Bikes used 7005 aluminum, butted with replaceable derailleur hanger material for the frame. RANS Tilt Bar-Stem Combo high strength material is used on the handlebar of this Sirius to ensure the perfect handling while the stems are made of RANS Tilt Bar-Stem Combo.
For the smoothest biking experience Sugino XD600 Tandem, 38/50/60 teeth is used on this bicycle linked to SRAM PC-61 chain that is easily replaceable as stated by Boulder Bikes, the whole system is connected to a high reliability SRAM Quartz gear shift levers.
