CURVE Belgie Spirit - Steel All-Road Disc Bike

Inspired by the inaugural Indian Pacific Wheel Race, the Belgie Spirit Steel represents long haul adventuring in a timeless reliable package.

Discover your spirit of road-venture with this meticulously designed and finely crafted steel all-roader.  The limited edition Belgie Spirit in Steel is now available in small quantities.

Only limited 52 size remain.

Completes available in Apex 1 Mechanical/Hydro and Shimano Ultegra 8020 Mechanical/Hydro


- The Spirit -

A non-corporeal substance, the hub of emotions and character.
The defining feature of humanness, mediating between our body and soul
and completing us in ways we can only hope to fathom.


Gravel Bike, Road bike


We don't know too much about non-corporeal substances,
but we do know about bicycles. When we made the Curve Belgie Spirit in Steel,
it was our mission to create a bicycle that completed you as a cyclist in ways that
can't be explained but just felt right.


Belgie Spirit Columbus Steel All Road Bicycle  


As the "official bike" of the 5,500km Indian Pacific Wheel Race, we present the Belgie Spirit in glorious steel. We are only releasing a small number in this paint scheme so secure your piece of history. If you're lucky enough to get your hands on one, it will be ready to take you to the pub or across continents.


We've designed this roadie to go long! It's got plenty of room for fat tyres offering a buttery smooth road ride, or a good ol' gravel grind.  
The wheelbase is long, the BB is low, and the front is raised, so you can go go go, for hours or even days in comfort, easing neck, back and bum complaints.
All frames are TIG welded by hand from a select combination of Columbus Spirit, Columbus Life with 4130 steel frame components.

Tubing made in Italy from Niobium steel – a light and strong material developed specifically for bicycle frames. We've chosen it for its many qualities including strength, stiffness, durability and longevity. The result is a lightweight bike with a lively ride quality that can last a lifetime.


    Belgie Spirit Steel Bicycle Frameset 


    • Belgie Spirit Steel Frame
    • CCRD 12mm Road Disc Fork  | 700 x 25c - 32c
    • CURVE Semi-Internal Head Set
    • Carbon Steerer Expander
    • CURVE 30mm Alloy Seat Clamp
    • Thru axles front and rear


    Belgie Spirit Steel Sweet Build –

    Zipp – Bar, Stem, Post / Curve Alloy or Carbon Wheel upgrade.
    We've carefully selected a build kit that brings your new Spirit to life. 
    • CRANK:  SRAM Apex 44 – 170mm – 172.5 – 175mm
    • BB: White Industries T47 Bottom Bracket
    • DERAILLEUR:  SRAM Apex 1 Wi-Fli
    • CASSETTE: 11-42 Wide Range 11sp
    • CHAIN:  SRAM PowerChain
    • SHIFTER/LEVERS:  SRAM Apex 1x Double-Tap Brake Lever & Shifter
    • BRAKES:  
    SRAM  Apex 1x  Hydraulic Disc w/160mm Centreline Rotors
    • BARS:  Zipp Service Course ERGO
    Widths: 40cm – 42cm – 44cm
    • STEM:  Zipp Service Course 6° - 90mm, 100mm, XL 110mm
    • SEATPOST:  Zipp Service Course - 27.2mm 0 Setback
    • WHEELS:  CURVE Grav Al. 30 x 24 Alloy Tubeless - DT Swiss 350 CL - Sapim Race Spokes
    • SADDLE:  WTB SL8 Cro-Mo
    • TYRES:   Clement LGG 120Tpi 700 x 28
    • BARTAPE:  Velo Black Cush tape
      *Minor changes may occur due to stock availability.

    Development & Adventures

    The development frames have already undergone more miles of testing than most of us will cover in the next 5 years.

    Belgie Spirit Fixed Heart Perth Melbourne Cycling Adventure

    Perth to Melbourne with Fixed Heart
    Ben le Mesurier is extraordinary, a Curve mechanic and test rider, who rode from Perth to Melbourne solo to raise money and give back to the Melbourne Children’s Hospital who saved his life a decade ago. 
    Road-venture bikes must give you everything you need and nothing you don't. We've moved all bidon cages as low in the front triangle as possible allowing you to fit 2* one-litre bottles with enough space above for a frame bag. There is also a cage mount under the down tube for storing a tools & spares cannister, or more water.
    *Frame triangle storage is dependant on frame size.
    Jesse Carlsson Belgie Spirit
    Melbourne to Adelaide with Jesse Carlsson & Maven
    Not many people put km's on a bike like Jesse Carlsson, he is the ultimate test rider and ride leader of our 800km in two days, Tour Down Under pilgrimage.
    In 2017 we had 8 people on the ride including the world famous vlogger Cycling Maven, who captured Day 1 and Day 2 of our exploits on Youtube


    Brodie on the Belgie Spirit Cycling through Japan

    Brodie captures the Spirit of Japan



    SIZE 49 52 54 56 58 61
    Effective Top Tube (Horizontal) - mm 515 535 542 562 582 602
    Seat Tube (Centre to Top) - mm 470 500 520 540 560 580
    Seat Tube Angle - Degrees 74.5 74 73.8 73.5 73 72.5
    Head Tube Angle - Degrees 71 71.3 71.5 72.5 73 73
    Chain Stay Length - mm 418 420 420 422 425 428
    BB Drop - mm 73 72 72 70 68 68
    Wheel Base - mm 984 999 1003 1012 1028 1045
    Head Tube Length - mm 130 145 160 180 200 220
    Reach - mm 362 373 374 385 394 403
    Stack (Includes headset) - mm 544 559 574 594 616 632
    Front Centre - mm 577 590 594 602 612 626



    Rear Axle Spacing: 142mm x 12mm  |  Head Tube Diameter (Internal): 44mm
    Seat Clamp Size: 30.0mm  |  Seat Post Size: 27.2mm
    Rotor Size: 140-160mm  |  Brakes: Disc Only, Flat Mount
    Max Tyre Clearance: 700C x 25 - 32C
    BB Shell: T47 Threaded |  Weight Approx: 2050g** (54)

    Bidon Mounts: 3 x Mounts
    Hanger: Curve Hanger

    Fork Rake: 45mm  |  Fork Length (Axle to Crown): 370mm
    Fork Weight (Uncut 300mm Steerer): 415g**  |  Steerer: Tapered 1 1/8 - 1.5

    **Weights may vary slightly from delivered product, weighed on different scales.


    Columbus Spirit

    Down Tube: Columbus Spirit  |  Top Tube: Columbus Spirit
    Seat Tube: Columbus Life  |  Chain Stays: Cro-Mo
    Seat Stays: Cro-Mo |  Head Tube: Cro-Mo
    Drop Outs: Cro-Mo



     Curve Cycling Belgie Spirit Titanium Disc All-Road Bike

    Belgie Spirit Steel FAQs



    Q - Can I bring my own groupset and/or build kit (full or partial) to Curve or a Curve dealer to complete my build?

    A - Yes. No worries. Curve or a Curve dealer can help guide you through the process from start to finish.

    Q - How long will it take to receive my Belgie Spirit Steel frame?

    A - Currently approx. 10 days on available stock. If it's not in stock unfortunately you will never recieve it.

    Q - Is the Belgie Spirit Steel available in a non-disc version?

    A - No. We promote disc 100%.

    Q - I would like a complete bike but different from the above spec. Can I still order it through Curve or a Curve dealer?

    A - Yes. No worries. We will treat it as a custom build. Almost any wish list you have can be catered for. Curve or your closest Curve dealer can handle it.

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