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    Customer Reviews

    Based on 4 reviews
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    C
    C.
    Hands down favorite bike I’ve ever owned

    The G.1 is a beast on the streets, shreds gravel and flies up hills. This baby wants to travel. The first time I rode it I couldn’t help but search for the steepest hills I could find. They were no match. Beast of a bike.

    R
    R.
    Too good to be true?

    I'm a longtime cyclist. I've raced road, track, CX, and MTB. Quality is important to me, so I researched the heck out of this bike before buying it. All the reviews on reputable sites were positive, so I took the leap. The specs of this bike are top-notch, there is not a single component where they cut corners. Sram Force 1, Zipp finishing kit, and mercury wheels. Spec-wise, the only thing I would rather have seen is centerlock rotors - but that would have meant that it wouldn't be a complete Sram spec. I just prefer centerlock mount. Also, I may swap out the cassette with a tighter range since there is no terrain near me that would require such low gears. Also, this bike was completely adjusted out of the box! I weighed it as soon as I assembled it - without pedals and not set up tubeless, my 58cm weighed 18 lbs. Unreal. On paper, all that is fine, but what matters is how it rides. After getting my position dialed in (I swapped out the 110mm stem for a 120mm) I put it to the test. I hit all sorts of terrain, road, gravel, wood chip trail, and light singletrack. This bike handles predictably, I got into a couple situations where I was sure that I was going to fall, but kept it rubber side down. It pedals really smoothly. On top of all that the bike looks great - better in person than in photos, I got the silver one. I have received a lot of complements on it. You'd probably spend $1000 or more to get a bike this good from one of the major, popular brands. I'm glad that I bought this bike!

    A
    A.H.
    Oh the Places You'll Go

    After years on the road I was looking for new adventures, new challenges, and a figurative change of pace. I've had my G.1 for about two months and with no exaggeration: this bike brought the joy back into cycling for me.

    Assembly was a breeze as the bike comes almost fully put together: those with limited mechanical knowledge can still get this bike ready to roll.

    The transition from road to dirt can be nervous at times with the uncertainty of surface, but I continue to be impressed with the bike's handling as I test the limits - through mtb trails, creek crossings, unkempt fire roads and general wilderness. I have put in multiple 7 hour days on it so I can attest to comfort over ultra-distance which in turn has allowed me to gain confidence.

    All that being said, it is also remarkably fast. I can show up for my club ride and roll with the fast group on the road, even with beefy gravel tires.

    If you're looking for a fast, comfortable bike that will take you on epic adventures and reinstate you passion for two wheels, look no further.

    A
    A.M.
    Access to Adventure

    I was very please with the G.1 from the moment I unboxed it and used the handy guide for assembly. It was ridiculously easy to put the wheel on, handlebars and seat post, throw a little air in the tires and roll out. Even came with a handy torque wrench so my monkey-like tendencies wouldn't overcome me.

    First ride was awesome, bike fits me well, feels great on the dirt roads I like to ride. I did swap to a larger tire from Maxxis to give me more cushion, and I upgraded to carbon wheels for performance.

    Overall, I'm super pumped on this bike!

      Key Features
      • Weight: 17 lbs 13 oz complete (Size 54)
      • 1,010-gram size 54 frame, with derailleur and water bottle mounting hardware
      • Clearance for up to 40c tires on 700c or 2.1” on 650B/27.5”
      • Asymmetric chain stays allow up to 46T 1x or 50/34T 2x gearing

      Additional Features
      • SRAM Force 1x11 drivetrain for simplicity
      • Drop seat stays and flattened rear tubing mute road chatter
      • Internal cable routings resist dust and grime
      • Durable threaded bottom bracket adds serviceability
      • Nimble and wide Mercury G3C wheels for max tire contact
      • Zipp Service Course cockpit for steering control and comfort
      • Mounts for three water bottles
    SPEC DETAIL
    FRAMEVIATHON G.1 GRAVEL FRAME
    FORKVIATHON G.1 GRAVEL FORK
    HEADSETFSA
    REAR DERAILLEURSRAM RD FORCE 1 LONG CAGE
    SHIFT/BRAKE LEVERSSRAM FORCE HRD CX1
    BRAKE ROTORSRAM 160MM ROUNDED
    BOTTOM BRACKETSRAM BB GXP, 68MM
    CRANKSETSRAM FC FORCE 1, X-SYNC, 42T
    CASSETTESRAM XG-1175 FULL PIN 10-42
    CHAINSRAM PC-1170 11-SPEED
    SPEC DETAIL
    FRONT AXLESHIMANO E-THRU AXLE 100X12MM
    REAR AXLESHIMANO E-THRU AXLE 142X12MM
    WHEEL SETMERCURY G1C DISC, XD
    TIRES IRC BOKEN, 700 X 40, FOLDING
    INNER TUBESKENDA 700C
    HANDLE BARZIPP SERVICE COURSE SL-70
    BAR TAPEFIZIK BLACK
    STEMZIPP SERVICE COURSE SL B1, 31.8MM, 6°, 110MM
    SEAT POSTZIPP SERVICE COURSE SL B1, 20MM OFFSET, 27.2MM, 330MM
    SADDLESELLE ITALIA NOVUS BOOST MAG
    SPEC DETAIL
    SPECDETAIL
    FRAMEVIATHON G.1 GRAVEL FRAME
    FORKVIATHON G.1 GRAVEL FORK
    HEADSETFSA
    REAR DERAILLEURSRAM RD FORCE1 LONG CAGE
    SHIFT/BRAKE LEVERSSRAM FORCE HRD CX1
    BRAKE ROTORSRAM 160MM ROUNDED
    BOTTOM BRACKETSRAM BB GXP, 68MM
    CRANKSETSRAM FC FORCE 1, X-SYNC, 42T
    CASSETTESRAM XG-1175 FULL PIN 10-42
    CHAINSRAM PC-1170 11-SPEED
    FRONT AXLESHIMANO E-THRU AXLE 100X12MM
    REAR AXLESHIMANO E-THRU AXLE 142X12MM
    WHEEL SETMERCURY G1C DISC, XD
    TIRESIRC BOKEN, 700 X 40, FOLDING
    INNER TUBESKENDA 700C
    HANDLE BARZIPP SERVICE COURSE SL-70
    BAR TAPEFIZIK BLACK
    STEMZIPP SERVICE COURSE SL B1, 31.8MM, 6°, 110MM
    SEAT POSTZIPP SERVICE COURSE SL B1, 20MM OFFSET, 27.2MM, 330MM
    SADDLESELLE ITALIA NOVUS BOOST MAG

    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 Size520540560580600
    A Stack545565.8582598.2612.5
    B Reach378.9382.8387.6392.1408
    C HT125145160175190
    D Rear Center425
    E Front Center598604609613634
    F Wheelbase10131019102410291049
    G BB drop69
    H ST angle74.5 °74 °73.5 °73 °73 °
    I HT angle71 °71.5 °72 °72.5 °72.5 °
    J TT (effective)530545560575595
    K ST (physical)520540560580600
    L Fork Offset48
    Wheel size700c
    Fork length394
    Fork Offset48
    Trail68.465.261.958.858.8
    Show: |
    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.