Counterpoint OPUS IV SE 1993 VS Boulder Bikes SIRIUS 2000 specs comparison
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➜ Counterpoint Opus IV SE price
➜ Boulder Bikes Sirius price
Counterpoint Opus IV SE
General Infos| Model | Opus IV SE |
| Manufacturer | Counterpoint |
| Year of production | 1993 |
| Current price | 🛒 View Price → |
| Color choice | -Not found |
| Sizes | - 18 - 20 - 22 |
| Sizes | - 18 - 20 - 22 |
Wheels And Breaking System
| Bike front tire | 20 X 2.00 (inches) Specialized Nimbus III |
| Bike rear tire | Not Available |
| Bike wheel size | 20 (inches) Wheels |
| Brakeset type | LeversMagura Hydrostop Hydraulic Brakes |
| Hubs for disc brakes | Specialized Cartridge Bearing |
| Rims manufacturer | 36-holeCampagnolo Atheno |
| Spoke nipples type | Not Available |
| Spoke wheel | Not Available |
Frame and Body Specs
| Frame materials | 4130 chrome-moly c |
| Frame type | TIG-welded Steel |
| Handlebar construction | Specialized Rockbar With Control Stix II |
| Handlebar extender | Not Available |
| Handlebar stem details | SR CAS-40 |
| Headset size | Not Available |
Gearing Specifications
| Bicycle chain | Sedisport |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 28/44/50 TeethSR |
| Gear shift levers | Shimano Deore DX Thumbshifters |
| Rear gear set | 13 - 32 Teeth7-speed |
Counterpoint Opus IV SE Fork System Data
| Derailleur (Front) | Shimano Deore XT |
| Derailleur (Rear) | Shimano Deore XT |
| Fork material | Not Available |
| Fork type | Tange and Counterpoint Chrome-moly |
Other Specs of Counterpoint Opus IV SE
| Component group sets | Shimano Deore XT and DX |
| Pedals details | Not Available |
| Rear shock absorber | Not Available |
| Saddle seat | Stoker: Mesh RecumbentCaptain: Specialzed |
| Seat post extension | Specialized Direct Drive |
Boulder Bikes Sirius
General Infos| Model | Sirius |
| Manufacturer | Boulder Bikes |
| Year of production | 2000 |
| Current price | 🛒 View Price → |
| Color choice | -All colors 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 LeversMagura HS 33 Brakes |
| Hubs for disc brakes | Rear: SRAM 3x7Front: SRAM Plasma |
| Rims manufacturer | 32-holeSun Rims CR18 |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | 2.0 (millimeters) Straight GaugeDT Stainless Steel |
Frame and Body Specs
| Frame materials | Butted With Replaceable Derailleur Hanger7005 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 Specifications
| Bicycle chain | 1/2 X 3/32 (inches)SRAM PC-61 |
| Bottom bracket shell width | 68 (millimeters) English |
| Bottom bracket type | 122.5 (millimeters) SpindleShimano BB-UN72 |
| Crankset parts and sizes | 38/50/60 TeethSugino XD600 Tandem |
| Gear shift levers | SRAM Quartz |
| Rear gear set | 11 - 30 Teeth7-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 CrownAluminum and chromoly |
| Fork type | 1.0 (inches) TravelBallistic 600 XL |
Other Specs of Boulder Bikes Sirius
| Component group sets | Recumbent Mix |
| Pedals details | Optional |
| Rear shock absorber | 3.0 (inches) TravelWorks Performance and Boulder Bikes Spring and Oil |
| Saddle seat | RANS Recumbent Seat |
| Seat post extension | Control Tech Control Post |
Useful links and guides ....
- To know more about this exacte bike, Counterpoint provided us with the latest version of its Opus IV SE bike manual
- Find All parts, tires and accessories of Counterpoint Opus IV SE Tandem here
- Get your Boulder Bikes Sirius manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Boulder Bikes Sirius Tandem here