Your Basket - 0 Items - £0.00 Checkout
CBOOFATX52
  •  
  •  
  •  
  •  
  •  
4 Reviews
On-One 'Fatty' Fat Bike On-One 'Fatty' Fat Bike
In stock
Current Build Queue: 3-5 Working Days
From $1,374.99

The Fatty just got fatter, two-fold in fact, with a 2x10 SRAM X5 set-up and a new carbon fork as standard. The Fat Bike is one of the most versatile bikes out there, able to tackle terrain that other bikes simply run from.

  • No need for suspension with tyres this big
  • Lightweight carbon fork
  • 2x10 SRAM X5 gearing
  • Not just for snow and sand!

Full Description

Description

New Fat bike with two chainrings up front and twice the amount of gears. The Fatty Fat Bike features some of the most progressive 'fat' geometry out there. Since hitting the scene over a year ago we've evolved it further to meet the changing demands and advancements of the fat bike world. This new build has a 2x10 SRAM X5 set-up, increasing things two-fold. More gears, more fat, more fun.

For all terrain riding, whatever the conditions, whatever the weather, there can be but one option. Based around the huge 4" tyres and 70mm rims, the Fatty grips to surfaces that just aren't made for confident two wheeled riding. 6061 CNC'd aluminium hubs with a 135mm axle at the front, 170mm rear keep the Fatty rolling over anything you encounter. At 6-15 psi they soak up shocks like a suspension fork, and allow you to tune your ride through your tyre pressure.

We've kept the SRAM X5 groupset on it but doubled it up; two up front, ten at back. What this means is you have twice as many gears, and a lower climbing gear to tackle even more ground than before. You could say it's twice as good because of this, and you would be correct.

Why get Fat? Why not?! It's a totally new experience, trail capable and fun fun fun. Our chief 'fatty' tester Jon "Shaggy" Ross, rode the whole of the gruelling Trans Provence race route on his proto Fatty, solidly putting this genre on the map for trail capable handling. Four inches of bouncy rubber might be a world away from 150mm full suspension bikes, but it's like comparing cheese and chocolate. Fat was good, now get fatter.

Full Spec

Custom options available
On components showing this spanner
Brake Front Avid DB3 Hydraulic Disk Brake / Front / 900mm / 20 Post To IS / Black
Brake Rear Avid DB3 Hydraulic Disk Brake / Rear / 1600mm / 20 Post To IS / Black
Cassette SRAM PG 1030 Cassette / 10 Speed / 11-36T
Chain SRAM PC1031 10 Speed 114 Link Chain
Chainset SRAM X5 Fat Bike Chainset / 175mm / 36-22T / Black / GXP
Forks On-One Carbon Fatty Fork / 1 1/8 Inch / White
Front Mech SRAM X5 Front Mech / 2x10 / Max 38T / High Direct Mount / Dual Pull
Grips On-One Half Bob Lock-On Grips / Black
Handlebars El Guapo Ancho B Handlebar / 760mm / Black / 31.8mm Clamp
Rear Mech Sram X5 Rear Mech / 10 Speed / Black / Medium
Saddle WTB Volt Saddle On-One Edition / Black
Seatclamp On-One Forged Quick Release Seatclamp / 34.9mm / Black
Seatpost On-One Twelfty MTB Seatpost / 31.6mm / Anodised Black
Shifter Front Sram X5 Trigger Shifter / 2 Speed / Left Hand / Black
Shifter Rear Sram X5 Trigger Shifter / 10 Speed / Right Hand / Black
Stem On-One Hot Box Stem / 60mm / Polished Black / 7 degrees / 31.8mm Clamp
Tyres On-One Floater Fat Tyre / 4.0 inch / 120 TPI / Folding / Black
Wheelset On-One Fatty V2 Wheelset / Black / 32F32R / Shimano/SRAM
Frame Spare El Guapo HDM Spacer / Black / 100mm BB  
Brake spare Avid Compression Hose Fitting / Single  
Head Set On-One Superlight CNC Spacer Set 20+15+10+5 / 1 1/8 inch / Black  
Inner Tube On-One 26" Fatty Fatbike Tube / Presta / 28mm  
Frame Spare El Guapo HDM Mech Clamp / 34.9mm / 73mm BB  
Wheel Spare On-One Fatty V2 Wheelset Front Hub Adaptor / Pair  
Brake spare Avid Threaded Barb / Single  
Brake spare Avid Clean Sweep G2CS Rotor / 160 mm / 6 Bolt  
Brake spare Avid Clean Sweep G2CS Rotor / 180mm / 6 Bolt  
Head Set On-One Smoothie Mixer Tapered Headset 1 1/8 Inch - 1.5 Inch Black  

Key features

Geometry

Bike frame geometry
    16" 18" 20"
 
A Head Angle (°) 68 68 68
B Head Tube Length (mm) 100 120 140
C Effective Top Tube (mm) 570 595 610
D Seat Angle (°) 73 73 73
E

Seat Tube Length Centre to Top (inch)

16 18 20
F Chainstay Length (mm) 445 445 445
G Standover Height (mm) 740 740 740

Sizing Guide

Sizing Guide

Rider Height Inside Leg Suggested Frame Size Stem Length
5′6″ to 5′10″ 28”-31” 16” 40-60mm
5′9″ to 6′1″ 30”-34” 18” 40-60mm
6′10" to 6′3″ 33”-36” 20” 40-60mm

Sizing Notes

All frame size recommendations are approximate. A good fit will also depend on the correct choice of stem length, correct bike set-up for the rider and riding style.

Correct frame size choice can also depend on a rider’s torso and limb length.

If you're unsure about the size you need, please call our customer services team to see if we can help +44 (0)1709 38 66 66

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? Call our technical experts

503-894-8956

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
16 inch Pearl White 16 inch Pearl White $1,374.99 24 in stock
20 inch Pearl White 20 inch Pearl White $1,374.99 10 in stock
18 inch Pearl White 18 inch Pearl White $1,374.99 Lots in stock
Step 2: Choose your options

Need help?

Call our technical experts on: 01709 386666

Choose Brake Setup

Brake Setup
Select
Rear brake LEFT - like normal    
Select
Rear brake RIGHT - like the Euros    

Choose Components

Bottle Cages
Select
No Bottle Cages Thanks  FREE
Select
Planet X Alloy Bottle CageSilver $4.10 i
Select
Planet X Alloy Bottle CageRed Anodised $4.10 i
Select
Planet X Alloy Bottle CageBlack $4.10 i
Select
Selcof Policarb Bottle CageWhite $8.20 i
Select
Selcof Policarb Bottle CageBlack $8.20 i
Select
Selcof Carbon BottlecageWhite $17.80 i
Select
Selcof Carbon BottlecageBlack $20.60 i
Select
Pair Of Planet X Pro Carbon Bottle Cages - Gloss Black $48.10 i
Chain
Select
SRAM PC1051 10 Speed Chain 114 Links $6.90 i
Select
SRAM PC1031 Chain116 Links $6.90 i
Select
SRAM PC1031 10 Speed 114 Link Chain  FREE i
Select
SRAM PC1071 10 Speed Chain114 Link $20.60 i
Forks
Select
On-One Carbon Fatty Fork1 1/8 Inch | Black  FREE i
Select
On-One Carbon Fatty Fork1 1/8 Inch | White  FREE i
Frame
Select
On-One Fatty Frame20 inch | Pearl White $205.99 i
Select
On-One Fatty Frame16 inch | Pearl White $205.99 i
Select
On-One Fatty V2 Frame18 inch | Pearl White $205.99 i
Front Mech
Select
SRAM X5 Front Mech2x10 | Max 38T | High Direct Mount | Dual Pull  FREE i
Select
SRAM X5 Front Mech2x10 | Max 38T | High Direct Mount | Dual Pull $19.20 i
Select
Sram X7 Front Mech2x10 | Direct Mount | Direct $31.60 i
Grips
Select
On-One Half Bob Lock-On Foam GripsBlack  FREE i
Select
On-One Half Bob Lock-On GripsWhite  FREE i
Select
On-One Half Bob Lock-On GripsClear  FREE i
Select
On-One Half Bob Lock-On GripsBlack  FREE i
Handlebars
Select
El Guapo Ancho B Handlebar760mm | White | 31.8mm Clamp  FREE i
Select
El Guapo Ancho B Handlebar760mm | Black | 31.8mm Clamp  FREE i
Select
On-One Knuckleball HandlebarHard | Black | 777mm $27.30 i
Select
On-One Knuckleball HandlebarHard | Black | 747mm $27.30 i
Select
On-One Knuckleball HandlebarHard | White | 777mm $27.30 i
Select
On-One Knuckleball HandlebarChewy | White | 747mm $27.30 i
Select
On-One Knuckleball HandlebarHard | White | 747mm $27.30 i
Select
On-One Knuckleball HandlebarChewy | Black | 747mm $27.30 i
Pedals
Select
No Pedals Thanks  FREE
Select
On-One Platform Pedals/ Clear $4.10 i
Select
On-One Platform Pedals/ Red $4.10 i
Select
On-One Platform Pedals/ Black $5.50 i
Select
On-One Platform Pedals/ Glow in Dark $6.90 i
Select
El Guapo Delgado Pro PedalBlack $41.20 i
Select
On-One Park Hill Flats PedalsRaw $55.00 i
Select
On-One Park Hill Flats PedalsBlack $55.00 i
Select
Shimano XT M785 SPD Trail PedalsMTB $68.50 i
Select
Look S-Track Carbon MTB Pedals with Ti AxlePair $191.99 i
Saddle
Select
WTB Speed She Comp Ladies SaddleBlack  FREE i
Select
WTB Volt Saddle On-One EditionBlack  FREE i
Select
WTB SL8 Pro SaddleBlack $27.70 i
Seatclamp
Select
On-One Forged Quick Release Seatclamp34.9mm | Black  FREE i
Select
On-One TECH Series CNC Quick Release Seatclamp34.9 mm | Black $6.90 i
Seatpost
Select
On-One Seatpost Twelfty Sport MTB Seatpost- Black31.6mm  FREE i
Select
On-One Twelfty MTB Seatpost31.6mm | Anodised Black  FREE i
Select
Thomson Elite Seatpost31.6mm | Black | 410mm | Inline $55.00 i
Select
Rockshox Reverb 125mm Drop Seatpost31.6mm | 420mm | Black | Left 1500mm $206.49 i
Stem
Select
On-One Hot Box Stem60mm | Polished Black | 7 degrees | 31.8mm Clamp  FREE i
Select
On-One Hot Box Stem90mm | Polished Black | 7 degrees | 31.8mm Clamp  FREE i
Select
On-One Hot Box Stem50mm | Polished Black | 7 degrees | 31.8mm Clamp  FREE i
Select
On-One Hot Box Stem80mm | Polished Black | 7 degrees | 31.8mm Clamp  FREE i
Select
On-One Hot Box Stem100mm | Polished Black | 7 degrees | 31.8mm Clamp  FREE i
Select
El Guapo Corto Stem55mm | Black $41.30 i
Select
El Guapo Corto Stem45mm | Black $41.30 i
Select
On-One Ultralight CNC Stem70 mm | Black | 31.8 mm Clamp $27.50 i
Select
On-One Ultralight CNC Stem60 mm | Black | 31.8 mm Clamp $27.50 i
Select
El Guapo Corto Stem35mm | Black $41.30 i
Select
On-One Ultralight CNC Stem50 mm | Black | 31.8 mm Clamp $27.50 i

Rest of range