- Key Features
- Weight: 16 lbs 14 oz complete (Size 54)
- 870-gram size 54 frame, with derailleur and water bottle mounting hardware
- Oversize tapered head tube and bottom bracket for precise handling and pedaling efficiency
- Pro-level performance at a fraction of the cost
- Shimano Ultegra for shifting speed and accuracy
- 35mm Knight TLA carbon wheels for explosive speed and a crisp road feel
- Internal cable routings reduce aerodynamic drag
- Zipp Service Course SL cockpit for steering precision and comfort
- Clearance for 28mm tires
Additional Features
| SPEC | DETAIL |
|---|---|
| FRAME | VIATHON R.1 ROAD FRAME FULL CARBON |
| FORK | VIATHON R.1 ROAD FORK FULL CARBON |
| HEADSET | FSA |
| REAR DERAILLEUR | SHIMANO ULTEGRA RD-R8000 |
| FRONT DERAILLEUR | SHIMANO ULTEGRA FD-R8000 |
| SHIFT/BRAKE LEVERS | SHIMANO ULTEGRA ST-R8020 |
| ROTOR | SHIMANO SM-RT800, 160MM |
| BOTTOM BRACKET | ROTOR PRESS FIT 4624 |
| CRANKSET | SHIMANO ULTEGRA FC-R8000 50-34T |
| CASSETTE | SHIMANO ULTEGRA CS-R8000 11-28 |
| CHAIN | SHIMANO CN-HG701-11 |
| SPEC | DETAIL |
|---|---|
| FRONT AXLE | 12MM X 100MM QUICK RELEASE THRU-AXLE |
| REAR AXLE | 12MM X 142MM QUICK RELEASE THRU-AXLE |
| WHEELS | KNIGHT 35mm TLA CARBON CLINCHER KNIGHT CENTER LOCK HUBS |
| TIRES | CONTINENTAL GRAND PRIX 5000 S 25mm BLACK CHILI |
| INNER TUBES | KENDA PRESTA |
| HANDLE BAR | FIZIK SERVICE COURSE SL-70 |
| BAR TAPE | FIZIK WHITE |
| STEM | ZIPP SERVICE COURSE SL 110MM |
| SEAT POST | ZIPP SERVICE COURSE SL 0 OFFSET |
| SADDLE | FIZIK ANTARES R3 141mm K:ium rail |
| SPEC | DETAIL |
|---|---|
| FRAME | VIATHON R.1 ROAD FRAME |
| FORK | VIATHON R.1 ROAD FORK |
| HEADSET | FSA |
| REAR DERAILLEUR | SHIMANO ULTEGRA RD-R8000, 11-SPEED, SHADOW |
| FRONT DERAILLEUR | SHIMANO ULTEGRA FD-R8000, DOWN-SWING, BRAZED-ON TYPE |
| SHIFT/BRAKE LEVERS | SHIMANO ULTEGRA ST-R8020, DISC BRAKE |
| ROTOR | SHIMANO SM-RT800, 160MM, W/LOCK RING |
| BOTTOM BRACKET | ROTOR PRESS FIT 30TO24 CONVERTER |
| CRANKSET | SHIMANO ULTEGRA FC-R8000, HOLLOWTECH 2, 50-34T |
| CASSETTE | SHIMANO ULTEGRA CS-R8000, 11-SPEED, 11-28 |
| CHAIN | SHIMANO CN-HG701-11, 11-SPEED |
| FRONT AXLE | SHIMANO E-THRU AXLE 100X12MM |
| REAR AXLE | SHIMANO E-THRU AXLE 142X12MM |
| WHEELS | KNIGHT 35 TLA CARBON CLINCHER, IW 17MM, EW 25MM, 35MM DEPTH, KNIGHT CENTER LOCK DISC HUBS |
| TIRES | CONTINENTAL GRAND PRIX 5000 S, 700 X 25, BLACK + BLACK CHILI |
| INNER TUBES | KENDA 23/25C |
| HANDLE BAR | FIZIK SERVICE COURSE SL-70 ERGO |
| BAR TAPE | FIZIK WHITE |
| STEM | ZIPP SERVICE COURSE SL B1, 31.8MM, 6°, 110MM |
| SEAT POST | ZIPP SERVICE COURSE SL B1, 0 OFFSET, 27.2MM, 330MM |
| SADDLE | FIZIK ANTARES R3 |
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
| Frame Size | 520 | 540 | 560 | 575 | 590 |
|---|---|---|---|---|---|
| Stack | 527 | 550 | 569 | 584 | 612 |
| Reach | 380 | 386 | 391 | 397 | 408 |
| HT | 124 | 146 | 164 | 178 | 211 |
| Rear Center | 406 | 406 | 408 | 408 | 408 |
| Front Center | 578 | 583 | 590 | 596 | 613 |
| Wheelbase | 973 | 979 | 988 | 993 | 1012 |
| BB drop | 72 | 72 | 72 | 72 | 67 |
| ST angle | 73.7 | 73.4 | 73 | 73 | 72.4 |
| HT angle | 72 | 72.8 | 73.2 | 73.7 | 74 |
| TT (effective) | 534 | 550 | 565 | 576 | 602 |
| ST (physical) | 520 | 540 | 560 | 575 | 590 |
| Fork Offset | 43 | ||||
| Wheel size | 700c | ||||
| Fork length | 367 | ||||
| Trail | 67.4 | ||||
| Component | Detail |
|---|---|
| Front Derailleur | No Compatability |
| Seat Post | 31.6mm |
| Seat Clamp | 36.4mm |
| Eye to Eye length | 250mm |
| Stroke | 75mm |
| Fork Compatability | 203mm |
| Max Tire Size | 2.5" |
| Max Chainring Size | 36t |
| Shock Mountain Bushing Front | 25x8 |
| Shock Mountain Brushing Rear | 30x8 |
LIMITED WARRANTY
Two (2) years from the date of purchase for the original owner.
To ensure a long service life and good durability of your bike, only use it for its intended purpose, see Intended Use warning in your owner’s manual, and or on our website in the product information page. The manufacturer’s assembly instructions (especially the torque settings for bolts) and the prescribed maintenance intervals must be strictly followed as well.
This Warranty does NOT cover:
- Normal wear and tear
- Improper assembly
- Improper follow-up maintenance
- Installation of components, parts, or accessories not originally intended for or compatible with the bicycle as sold
- Damage or failure due to accident, misuse, abuse, or neglect
- Labor charges for part replacement or changeover
- Bikes used for commercial activities, including those in rental, demo, or security fleets
Crash Replacement:
In the event of an accident or severe crash we offer the original purchaser the opportunity to replace their damaged Viathon frame at a greatly reduced cost.
To make a claim:
Contact Viathon at Support@viathonbicycles.com to initiate a warranty claim. Proof of purchase is required.
Further limitations on the limited warranty
For further limitations and more information on our limited warranty, please visit out site here.
Related products
United StatesI bought the 54cm R1 Ultegra and was blown away by the quality, finish and ride of this bike. This bike is very fast and corners really well; Almost moto-gp like (the freehub sound is amazing on the Knight wheels, adding to the affect)! I felt the climbing was better than any of my other rig's, by far. Prior to purchasing this bike, I was considering building my own (again) but could not match the parts for the prices the R1 comes with. It truly is an amazing bike (Other bikes I have at the house: Canyon Ultimate, Colnago Spiral, LaPierre XLITE, Blue RC8). I would highly recommend this bike!