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On-One Big Dog 29" Mountain Bike Frame On-One Big Dog 29" Mountain Bike Frame
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1 Review
From £249.99
In stock

Sweet spot handling with a classic steel sprung vibe, Big Dog is your 29er trail best friend. Big Dog blends modern 29er geometry with a classic steel ride character to create a smooth rolling, sweetly sprung all rounder with tons of character. Hand welded triple butted steel frame and a big tyre compatible back end guarantee all day comfortable control. Full description and spec

Size guide and geometry

Description

Hand welded triple butted, gusset reinforced steel main tubes with custom tapered, curved and plated back end for a trail smoothing character with bombproof strength. Balanced 29er handling in four sizes. Stable and confident without being crazy stretched and slack. You want Hello Dave for that.. Threaded BB shell, big clearance chain stay plate Boost bolt through axle and replaceable gear hanger for crash/transport survival.

External cable routing for the smooth, simple operation. Stealth dropper post routing and rear rack mounts for enduro or exploro. Lacquered raw finish for naked build detail appreciation (with eventual cosmetic rat bike rust) or genuinely dayglo paint for ultimate pop.Custom upgrades let you build your ultimate trail best friend for a crazy low cost.

Notes:-

  • Designed for 120-130mm suspension, but works ok with 490-500mm rigid forks.
  • Intended to be used with a 35-50mm stem (if using riser bars) - other bars may need a longer stem.
  • 32t boost chainring is design spec, but larger may fit (tbc).
  • 160mm rear rotor is design spec, but larger may fit (tbc).
  • Headset is EC44 lower cup, ZS44 upper cup.
  • 31.6mm seatpost with 34.9mm clamp
  • 29 x 2.6in tyre maximum
  • 650b x 2.8 fits (just).

Frame Details

Frame Material4130 DB
Frame Weight, Approx, (med) (g)2.7kg (Medium)
Fork 120-130mm
Fork Weight, Approx (g)TBC
FR Axle (mm)TBC
RR Axle (mm)148 BOOST
Seatpost Size (mm)31.6
Seat Clamp Size (mm)34.9
Front Mech TypeNA
Wheels29" or 650B
Max Tyre2.6" (29) 2.8" (650b)
Mudguard mountsNA
Rack MountsREAR
Bottle Cage Bosses1
Brake TypeChainstay Mount
Bottom Bracket73mm BSA
Headset Type44mm
Fork Length (mm)TBD
Cable RoutingEXT
Dropper Compatible

Max Chainring

Max Rear Rotor
Yes, Stealth

32t

160mm

Buying a bike from Planet X?

Why are prices so low?
We sell direct to the customer. With Planet X you get unrivalled value for money as we cut out the middleman. By designing and building everything ourselves, we provide excellent service, and make sure you get exactly what you pay for. This means we deliver first-class bikes, components, and accessories at the best prices in our industry.

How it works
You order your bike your way. Simply select the frame size and colour you want and choose from the range of customisation options with components to fit your needs. Your bike will be passed to one of our expert mechanics to build your bike exactly the way you want it.

Buying online in confidence
For advice on sizing and specifications, contact us via Live Chat and one of our in-house experts will be happy to assist with perfecting your bike. More information on building a bike is available on our dedicated bikes built to order page

Buy in confidence

Built in the UK

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 Yorkshire. Working with the leading component vendors and fabrication facilities, we create bikes with unrivalled performance and provide exceptional value for money.

Chat with one of our experts today and we will help put together the custom bike of your dreams.

Geometry

Geometry

Size

Bike frame geometry
  SMALL MED LRGXLG
AHead Angle (degrees)65.065.065.065.0
B Head Tube (mm)100110120135
C Top Tube Effective(mm)580615630655
D Seat Tube Angle (degrees)75757575
E Seat Tube C-T Actual (mm)380420460500
F Chainstays (mm)444444444444
G BB Drop (mm)58585858
I Stack (mm)609619628641
J Reach (mm)415446460480
K Front Centre (mm)725762779807
M Fork Offset (mm)51515151
O Wheelbase (mm)1169120612231251
P Standover (mm)XXXX

Need help? Contact our technical experts

Visit our Contact Us page

Custom build option available
add to basket and customise
Build your order below
Step 1: Choose your size and colour below
Frame View size guide
ED Black No Decal Large ED Black No Decal Large £249.99
Customise
ED Black No Decal Medium ED Black No Decal Medium £249.99
Customise
ED Black No Decal Small ED Black No Decal Small £249.99
Customise
ED Black No Decal X-Large ED Black No Decal X-Large £249.99
Customise
Gloss Orange Large Gloss Orange Large £249.99
Customise
Gloss Orange Small Gloss Orange Small £249.99
Customise
Gloss Orange X-Large Gloss Orange X-Large £249.99
Customise
Raw Phosphate Small Raw Phosphate Small £249.99
Customise
Step 2: Choose your options

Need help?

Contact our technical experts

Choose Components

Frame
Select
On-One Big Dog 29" Mountain Bike FrameGloss Orange | Small  FREE i
Select
On-One Big Dog 29" Mountain Bike FrameED Black No Decal | X-Large  FREE i
Select
On-One Big Dog 29" Mountain Bike FrameRaw Phosphate | Small  FREE i
Select
On-One Big Dog 29" Mountain Bike FrameGloss Orange | Large  FREE i
Select
On-One Big Dog 29" Mountain Bike FrameED Black No Decal | Small  FREE i
Select
On-One Big Dog 29" Mountain Bike FrameRaw Phosphate | Medium  FREE i
Select
On-One Big Dog 29" Mountain Bike FrameED Black No Decal | Medium  FREE i
Select
On-One Big Dog 29" Mountain Bike FrameGloss Orange | X-Large  FREE i
Select
On-One Big Dog 29" Mountain Bike FrameED Black No Decal | Large  FREE i

Optional Accessories

Headset Need a headset? See our options below.
Select
NO THANKS  FREE
Select
Selcof Semi-Integrated Cup Cartridge Bearing Headset For Tapered 1 1/8th 1.5 Fork Steerer £59.99 i
Headset Spacers Spacers make a big difference on riding position, see our range below. (Please Note: Maxium height for steerer is 40mm of spacers.)
Select
NO THANKS  FREE
Select
Planet X Superlight Headset Spacer Pack1 1/8 inch | Black £2.99 i
Select
Planet X Headset Spacer Set1 1/8" | 15mm + 10mm + 5mm | Black £2.99 i
Seat Clamp Need a seatclamp? Check out our range below.
Select
NO THANKS  FREE
Select
Selcof Forged Alloy Bolt Up Seatclamp34.9 mm £4.99 i
Select
On-One 6061T6 Forged Alloy Seatclamp Bolt Up34.9 mm £4.99 i
Select
On-One Forged Alloy Bolt Up Seatclamp V234.9mm | 13mm | Black £4.99 i
Select
On-One Forged Quick Release Seatclamp34.9mm | Black £4.99 i
Select
On-One TECH Series CNC Quick Release Seatclamp34.9 mm | Black £7.99 i
Seatpost Need a seatclamp? Check out our range below.
Select
NO THANKS  FREE
Select
On-One Twelfty V2 6061 Alloy Seatpost31.6mm | 400mm | Black £9.99 i
Select
El Guapo Bronco Seatpost (Grey Logo)31.6mm £10.00 i
Select
El Guapo Bronco Seatpost (Black Logo)31.6mm £14.99 i
Select
On-One Seatpost Twelfty Sport MTB Seatpost- Black31.6mm £14.99 i
Spare Rear Mech Hanger We're hoping you'll never need it but you never know. Grab a spare.
Select
NO THANKS  FREE
Select
On-One Frame Replacement Rear Mech HangerBootzipper & Big Dog £24.99 i
Spare Thru Axle
Select
NO THANKS  FREE
Select
On-One Big Dog & Bootzipper 29er Thru AxlesRear 148 x 12mm £20.00 i
Stem Why not grab a stem? You can change the geometry of your ride and get the right fit - choose the stem length that's right for you.
Select
NO THANKS  FREE
Select
On-One Hot Box Stem90mm | Polished Black | 7 degrees | 31.8mm Clamp £12.00 i
Select
On-One Hot Box Stem70mm | Polished Black | 7 degrees | 31.8mm Clamp £12.00 i
Select
El Guapo Stallion Stem60mm | Grey £14.99 i
Select
On-One Hot Box Stem60mm | Polished Black | 7 degrees | 31.8mm Clamp £14.99 i
Select
On-One Hot Box V2 Stem60mm | 7 Degree | 31.8mm £19.99 i
Select
On-One Hot Box V2 Stem50mm | 7 Degree | 31.8mm £19.99 i
Select
El Guapo Stallion Stem50mm | Grey £19.99 i
Select
On-One Hot Box V2 Stem70mm | 7 Degree | 31.8mm £19.99 i

Rest of range

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