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On-One Space Chicken SRAM Force 1 Gravel Bike 27.5 Wheels On-One Space Chicken SRAM Force 1 Gravel Bike 27.5 Wheels
In stock
Bikes showing as in stock we aim to build on Thursday 13th of December.
Don't forget to choose your custom options, and look at the amazing deals on wheels too!

Pre-ordered bikes will take a little longer, but we'll keep you in the loop
From £1,999.99
In stock

650b version of our terrain chomping and mile-eating Space Chicken. On-One's unique Gravel bike, is a versatile big wheeler that can run 650b or 700c wheels with tyres up to 47mm, this is the 650b version. Kitted out with Reverb Stealth routing, thru-axle dropouts and built to take a single front ring between 28-42 it's part gravel bike, part tourer, part cyclocross and all fun. It's a true monster.

650b Gravel Bike (29er too)

  • SRAM Force HRD
  • Huge mud and tyre clearances
  • Pannier, mudguard and triple bottle mounts
  • Reverb Stealth routing
  • Full Description

    Description

    While the 650b Space Chicken's name might not make any sense everything else about it makes perfect sense. Built for adventurous riders who want to tackle any trail and explore the backcountry under their own steam the Space Chicken is equipped for the long haul. Handbuilt from IM carbon it's surprisingly lightweight, especially if you're coming from steel or titanium frames. With 650b wheels you've space for wider tyres, making it more capable in the rough stuff and enhancing stability by keeping your centre of gravity coloser to the ground.

    With thru axles, disk brakes, Stealth Dropper routeing, internal cable routeing, 3 bottle mounts, rear pannier mounts and space for full mudguards we've included all the details that any adventurer could need. What you don't see on the inside is just as important as what's on the outside and that's why you'll find extra layers of carbon on the seat-tube and top-tube to help support the weight of your bikepacks. An extra bottle cage on the downtube helps you carry enough liquid for the long haul.

    The Space Chicken's versatility works hand in hand with our carefully developed frame geometry. Swapping between 650b/700c wheels isn't an issue, ride whatever you fancy. With space for 650b tyres up to 48mm, you can choose wheels to match the conditions. We've included a dropped RHS chainstay to help clear wider tyres and offer more space for bigger chainrings. Whether you're a beast looking to run a 42t front ring for fast CX riding or a serious diesel engine who'll grind out the miles with fully loaded panniers and bikepacks on a 28t the Space Chicken is for you.

    Groupset: SRAM Force 1 is a 1x 11 speed groupset that brings a host of great new features to the party. A single front chainring with 'Narrow-wide' tooth profile ensures chain retention. Add in the extra chain tension that comes from the 'clutch mech' design and you have the best chain security you can ride. SRAMs wide-range cassette to give you the maximum gear options for powering up and down the trails, whilst powerful Force 1 HRD hydraulic brakes give effortless stopping power and great modulation so you can finesse your braking efforts to suit the surface conditions. An all-round elite level groupset with significant advantages over its competitors in the field. We've upgraded to SRAM extra wide 11-42 cassette, giving you an even wider gear range than ever before, there's no better bike for tackling the steepest tracks.

    Wheelset: Clement Ushuaia The Clement brand has a proud history, many cycling legends have raced on their tubs and they've finally moved into manufacturing their very own wheels. The Ushuaia wheelsets are intended for Gravel and adventure riding and come in a number of different sizes. All wheels share the same construction including a tubeless ready, hookless rim and double butted J-bend spokes. 6-pawl freehub Centre Lock disc fitting Gravel / Adventure wheelset featuring tubeless compatible bead seat and a strong 25mm deep profile. 23mm internal width makes them perfect for tyres from 28mm+

    Simply put these wheels are made for adventure. They're made for lugging loads across continents, uphill, down dale, over mountain and across the plains. They're named after the southernmost tip of South America. They're not superlight lightweight XC racing queens; they're solid, durable, and utterly dependable for mile after mile.

    Gravel, touring, cyclocross, big wheels, big tyres, huge load carrying ability, built for 1X drivetrains, dropper seat post ready and kitted with flat mount disk brakes the Space Chicken is ready for anything- are you?

    We're only making them in limited numbers. We know the market for such a specialised beast as this probably consists of only a handful of die-hard bike adventurers. But what the hell, you only live once. On-One didn't get famous by following by not taking a few risks.

    >Tyre sizes: 650b 43mm knobbies, 47mm slick/

    Weight: 9.1kg

    Check out the Nick Cook's Space Chicken Review in Totally Active Magazine

    Please Note: All customisable options will be fitted by our trained mechanics.

    Full Spec

    Custom options available
    On components showing this spanner
    Bar Tape Planet X Soft Touch Handlebar Tape / Black
    Brake Setup UK Brake Lever Setup Rear Brake Left
    Handlebar Selcof Sterrato Flared Gravel Handlebar / 42cm
    Saddle San Marco Monza Start Saddle / Black / Carbon Steel
    Stem Selcof Zeta 6061 Alloy Stem / 100mm / Matt Black / 10 degrees / 31.8mm
    Tyres Clement X'Plor MSO Tyre / Folding Bead / 650b / 42mm / 60TPI
    Inner Tube Vavert 27.5" Inner Tube / 1.75" - 2.125" / Presta / 48mm  
    Brake spare SRAM Hydraulic Hose Fitting Kit Includes Barb And Olive / Single Olive  
    Brake spare SRAM Hydraulic Hose Fitting Kit Includes Barb And Olive / Single Barb  
    Brake spare SRAM Flat Mount Disc Brake Mounting Hardware / 32mm / Single  
    Seat Clamp Selcof Forged Alloy Bolt Up Seatclamp / 34.9 mm  
    Head Set Planet X Headset Spacer Set / 1 1/8" / 15mm + 10mm + 5mm / Black  
    Frame Spare Selcof Carbon Steerer Fork Bung MK 2 / 1 1/8 inch  
    Chain SRAM PC1110 11 Speed Chain / 116 Links  
    Seat Post On-One Seatpost Twelfty Sport MTB Seatpost- Black / 30.9mm  
    Bottom Bracket SRAM GXP XR Bottom Bracket (With Spacers) / 68/73mm  
    Brake spare Avid Centreline Disc Brake Rotor / 160mm Centrelock  
    Cassette SRAM PG1130 Cassette / 11-42T  
    Head Set Selcof Integrated Cup Angular Contact Cartridge Bearing Headset For Tapered 1 1/8th 1.5 Fork Steerer  
    Rear Mech SRAM Force 1 Rear Mech / 11 Speed / Long Cage  
    Wheel Pair Clement Ushuaia 650B Center Lock Wheelset Incl QR And 12mm X 12/142mm Conversion Kit  
    Gear / Brake Lever SRAM Force 1 Hydraulic Disc Brake Lever with Flat Mount Caliper / 1 Speed Left  
    Gear / Brake Lever SRAM Force 1 Hydraulic Disc Brake Lever with Flat Mount Caliper / 11 Speed Right  
    Crank Set SRAM Force 1 GXP Chainset (No BB) / 172.5mm / 42T  

    Key features

    Versatile Carbon Gravel Bike
    The Space Chicken is the ultimate Gravel bike ready for anything. 650b or 700c wheels, 1X drivetrains, hydraulic brakes, big mud clearances and space for all the racks and packs you could ever need. It even features dropper post routing
    SRAM Force 1 Groupset
    SRAM's ultimate 1x drivetrain, for skinny wheeled bikes. All the performance of SRAM Force with gear ratios and hydraulic brakes designed for CX use.
    Clement Ushuaia Wheelset 6 Bolt
    A Gravel / Adventure ready disc disc brake wheelset featuring tubeless compatible bead seat and a strong 25mm deep profile. Light, strong and ready to roll.
    Customise your bike
    Because we hand build our bikes you can customise your bike how you like it. Simply choose your frame size then select from an array of choices so your bike is just how you like it.
    Direct To Customer
    At Planet X we supply everything we make direct to customer, there's no middle men or wholesalers adding anything to the cost. That's why we're able to offer you unmatched value for money- straight from our warehouse to your door
    Yorkshire Born and Bred
    Our bikes are designed, tested and assembled in Yorkshire. Every model is put through its paces across the toughest road or off-road routes that the Peak District has to offer. Just like us, they are Yorkshire Born and Bred
    Finance Options Available
    Buy now, Pay Later and 12, 24 & 36 Month Finance available. Subject to Application & Status, Terms and conditions apply

    Geometry

    Geometry

    Size & Specs

    Bike frame geometry
      S/51cmM/54cmL/57cmXL/60cm
    AHead Angle (degrees)69.571.072.572.5
    B Head Tube (mm)104131154181
    C Top Tube C-C Effective(mm)527551568591
    D Seat Tube Angle (degrees)72.2572.2572.2572.25
    E Seat Tube C-T (mm)510540570600
    F Chainstays (mm)422422422422
    G BB Drop (mm)69716971
    I Stack frame(mm)521552579610
    J Reach frame (mm)365376387398
    K Front Centre (mm)592598604621
    L Fork Length (mm)396396396396
    m Offset (mm)50505050
    O Wheelbase (mm)998100910201031

    Buying a bike from Planet X?

    Why are prices so low?
    Our prices are lower than the competition because we sell direct to you the customer; there are no middlemen to take a slice of the price you pay. We design and build everything ourselves so you get exactly what you pay for and that includes amazing service and unrivalled value for money.

    How it works
    You can buy from us in three different ways. You can call into one of our showrooms and try the bike you want before you place your order. You can order online via our website, or if you're too busy to call into the shop but would like advice on sizing and specifications then you can email or call our customer service dept. You'll receive the same great service no matter how you buy.

    Buying online in confidence
    Simply select your frame size and colour below and choose from the range of customisable options. Your bike will then be passed to one of our expert mechanics to build YOUR bike exactly the way YOU want it.

    Buy in confidence

    Crash replacement policy

    2 year warranty

    Custom built to your specifications

    Built to order in the UK
    Built to order in the UK

    We design and assemble every bike we sell right here in Yorskhire. We work with the leading component vendors and fabrication facilities  to create bikes of unrivalled performance and value for money.

    Can't see the upgrades you want on your bike? Give us a call today and we can build the custom bike of your dreams.

    Need help? E-Mail our technical experts

    [email protected]

    Custom build option available
    add to basket and customise
    Build your bike in 3 simple steps.
    Step 1: Select bike size and colour (by choosing a frame)
    Frame View size guide Stock
    Large (57) Anthracite and Red Large (57) Anthracite and Red £1,999.99 In Stock
    Medium (54) Anthracite and Red Medium (54) Anthracite and Red £1,999.99 In Stock
    Medium (54) Flame Grilled Medium (54) Flame Grilled £1,999.99 In Stock
    Small (51) Anthracite and Red Small (51) Anthracite and Red £1,999.99 In Stock
    Step 2: Choose your options

    Need help?

    Contact our technical experts

    Choose Components

    Bar Tape Add the finishing touch to your bike by customising the colour of your bar tape - Make it unique!
    Select
    Planet X Soft Touch Handlebar TapeBlack  FREE i
    Select
    Planet X Non-Slip Textured Gel Bar TapeMicro Grip Texture | Black £12.00 i
    Select
    Planet X Cork Gel Bar TapeBlack £6.99 i
    Select
    Selcof Eolo Soft Bar TapeBrown £9.99 i
    Select
    Selcof Eolo Soft Bar TapeFluro Pink £9.99 i
    Select
    Selcof Eolo Soft Bar TapeBlue £9.99 i
    Select
    Selcof Eolo Soft Bar TapeFluro Yellow £9.99 i
    Select
    Selcof Eolo Soft Bar TapeFluro Orange £9.99 i
    Select
    Selcof Eolo Soft Bar TapeBlack £9.99 i
    Select
    Selcof Eolo Soft Bar TapeWhite £9.99 i
    Select
    Selcof Eolo Soft Bar TapeFluro Green £9.99 i
    Select
    Selcof Eolo Soft Bar TapeRed £9.99 i
    Select
    Cinelli Caleido EVA Bar TapeBlack (Multi Colour) £24.99 i
    Brake Setup
    Select
    UK Brake Lever Setup Rear Brake Left  FREE i
    Select
    EURO - USA DISC & EXO3 Brake Lever Setup Rear Brake Right £50.00 i
    Frame
    Select
    On One Space Chicken 650+/ 700c Carbon Gravel FramesetMedium (54) | Anthracite and Red  FREE i
    Select
    On One Space Chicken 650+/ 700c Carbon Gravel FramesetLarge (57) | Anthracite and Red  FREE i
    Select
    On One Space Chicken 650+/ 700c Carbon Gravel FramesetSmall (51) | Anthracite and Red  FREE i
    Select
    On One Space Chicken 650+/ 700c Carbon Gravel FramesetMedium (54) | Flame Grilled  FREE i
    Handlebar Our standard build is usually perfect but you can choose a bar that suits your needs.
    Select
    Selcof Sterrato Flared Gravel Handlebar40cm £10.00 i
    Select
    Selcof Sterrato Flared Gravel Handlebar44cm £10.00 i
    Select
    Selcof Sterrato Flared Gravel Handlebar42cm  FREE i
    Saddle Have a preference on saddle design or simply want a lighter saddle? Upgrade now!
    Select
    San Marco Monza Start SaddleBlack | Carbon Steel  FREE i
    Select
    Selle Italia Lady Flow SaddleBlack £25.00 i
    Select
    Selle Italia MAN FlowBlack £25.00 i
    Select
    San Marco Regal EVO Woven SaddleBlack | Manganese £45.00 i
    Select
    San Marco Aspide Dynamic Supercomfort SaddleBlack | Manganese | Wide £45.00 i
    Select
    San Marco Aspide Dynamic Supercomfort SaddleBlack | Manganese | Narrow £45.00 i
    Select
    San Marco Aspide Open Fit Racing SaddleXsilite Rails | Black £45.00 i
    Select
    Selle Italia SLR Saddle FlowTi 316 | Black £55.00 i
    Select
    Selle Italia SLR SaddleTi 316 | Black £55.00 i
    Select
    San Marco Shortfit Racing SaddleBlack | Xsilite £50.00 i
    Stem Our standard build is normally great, but you can change the geometry of your ride and get the right fit - choose the stem length that's right for you.
    Select
    Selcof Zeta 6061 Alloy Stem90mm | Matt Black | 10 degrees | 31.8mm £10.00 i
    Select
    Selcof Zeta 6061 Alloy Stem100mm | Matt Black | 10 degrees | 31.8mm  FREE i
    Select
    Selcof Zeta 6061 Alloy Stem80mm | Matt Black | 10 degrees | 31.8mm £10.00 i
    Select
    Selcof Zeta 6061 Alloy Stem130mm | Matt Black | 10 degrees | 31.8mm £10.00 i
    Select
    Selcof Zeta 6061 Alloy Stem120mm | Matt Black | 10 degrees | 31.8mm £10.00 i
    Select
    Selcof Delta Carbon Road Stem31.8mm | 110mm £49.99 i
    Select
    Selcof Delta Carbon Road Stem31.8mm | 100mm £49.99 i
    Select
    Selcof Delta Carbon Road Stem31.8mm | 90mm £49.99 i
    Select
    Selcof Delta Carbon Road Stem31.8mm | 120mm £49.99 i
    Tyres
    Select
    Clement X'Plor MSO TyreFolding Bead | 650b | 42mm | 60TPI  FREE i
    Select
    Clement Strada USH Tyre 650bFolding Bead | 42mm | Black | 60TPI £20.00 i
    Select
    Maxy Fasty Folding Tyre650B | 34mm | Black with Tan Sidewall £40.00 i
    Select
    Clement Strada USH Tyre 650bTubeless Ready | 42mm | Black £40.00 i
    Select
    Clement X'Plor MSO TyreTubeless Ready | 650b | 42mm | 60TPI £40.00 i
    Select
    Rock N Road Folding Tyre650B (Tubeless Ready) | 43mm | Amber £40.00 i

    Optional Accessories

    Bottle Cage We're famous for our bottle cages, don't miss out and treat your yourself to a bottle cage for your new bike.
    Select
    NO THANKS  FREE
    Select
    Planet X Nightwolf Plastic Bottle CageBlack £4.99 i
    Select
    Planet X Stainless Steel Bottle CageBrushed £9.99 i
    Select
    Selcof Carbon BottlecageBlack £19.99 i

    Rest of range