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Planet X Pro Carbon XLS Cyclocross Frameset Planet X Pro Carbon XLS Cyclocross Frameset
From £499.99
In stock

Our most popular full carbon cyclocross bike is strong, fast and beautiful. Exceptional performance for cross racing, road riding, or exploring the trails.

  • Full carbon frame and fork
  • Disc brake specific
  • Use: CX racing / road riding / trails / commuting
  • Rear spacing: 135mm
  • BSA 68mm British standard bottom bracket
  • Weight: 1.82kg frame and fork (size XL, 59cm)
Full description and spec

Size guide and geometry


Cyclocross is growing fast. Drawn by the fun of the mud and the thrill of the racing, cyclists are taking to the 'cross course in droves. CX is a balance of speed and skill and the Planet X XLS is an eternal favourite of the scene, thanks to its contemporary and refined carbon chassis and race-tuned geometry. Whether youre looking to upgrade to carbon or discs, the XLS is the perfect place to start.

The XLS represents the evolution of technology within cyclocross, namely, the introduction of disc brakes. If you're a road rider that's never experienced disc stopping power, you'll be thrilled with their performance. No longer must you compromise on speed - on discs you can brake later into corners and shred mud like never before, as the discs stay clean. This performance increase is even more outstanding when coupled with the XLS' lightweight carbon frame and fork. We've cleverly flattened profile top-tube for comfy shouldering over the roughest off-road terrain, too. Theres big tyre clearance, too, to avoid mud clogging. With features like these, we've made sure the XLS is future-proof.

The XLS frame is beefed-up around the main frame joints for extra strength so it can easily handle the rough stuff. In fact, the XLS wants to be ridden hard, to show off how efficiently it transfers every watt of pedal-power into speed. Go on, drop the hammer, search for the limit, gap the field.

Of course, with a bike this tough, theres the added advantage of using it for multiple types of riding. Wash off the race mud and enjoy its versatility as a commuter or road bike. Put some slick-tyres in there for the weekend club run. The XLS is quickly gaining popularity for good reason!

Full carbon construction gives a superbly light chassis - leading to characteristics, UK Cyclocross Blogger "CrossJunkie" refers to as "snappy handling and a very stiff response to hard out of the saddle efforts."

We'll leave it to Crossjunkie to sum up the bike - read his review here -

This is the new definitive cross race winner.

Its BSA Threaded Bottom Bracket allows for easy fitting and good bearing life in muddy British conditions. Big cross sections make for solid power transfer, but optimal layup and subtle monocoque shaping allows for compliance to keep you from being jarred from the path. Take note of the flattened top tube - it makes the ride better and it also means the bike sits on your shoulder nicely. Carbon's great like that.

Please Note: this frame is designed to run a top pull front derailleur such as Shimano's CX70. If you want to run a conventional road front derailleur then you will need to buy a pulley.

  • Note: Headset not included; available for purchase - model: FSA No.42 ACB/MT.

    Frame Essentials

    Don't forget your new frame essentials and spares to get you up and rolling.

Frame Details

Frame MaterialToray T700 Carbon
Fork MaterialToray T700 Carbon with carbon steerer
Approx. Frame Weight (g)1223g (54cm)
Approx. Fork Weight (g)769g (uncut steerer)
Seat Clamp Size (mm)34,9
Front Mech Clamp Size (mm)34,9
Disc mount160mm direct post mount
Rear spacing135mm
Seatpost Size (mm)31,6
Bottle Cage Bosses2 sets
Headset typeFSA "No.42 ACB/MT"

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.




Bike frame geometry
Head Angle (°)A71.272.372.572.7
Head Tube (mm)B120133147162
Effective TT (mm)C516535555568
Seat Angle (°)D74.473.973.573
Seat Tube C - T (mm)E510540570590
Chainstay (mm)F425425425425
BB Drop (mm)G60606060
Reach (mm) 370377391392
Stack (mm) 529546560575

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
51cm Flanders 51cm Flanders £499.99
Sold Out
59cm Sky / Red 59cm Sky / Red £499.99
Step 2: Choose your options

Need help?

Contact our technical experts

Choose Components

Planet X Pro Carbon XLS Cyclocross Frameset59cm | Sky | Red  FREE i
Planet X Pro Carbon XLS Cyclo Cross Frameset57cm | Stealth Black  FREE i

Optional Accessories

Front Mech Roller
Planet X Front Mech Roller £2.99 i
Handle Bar We have a range of handlebars on offer, here's a few of our most popular options.
Selcof Jack Woodhead Handlebar40cm £9.99 i
Selcof Zeta 6061 Alloy Road Bar42cm | Matt Black | 31.8mm Clamp £19.99 i
Selcof Zeta 6061 Alloy Road Bar38cm | Matt Black | 31.8mm Clamp £19.99 i
Selcof Zeta 6061 Alloy Road Bar44cm | Matt Black | 31.8mm Clamp £19.99 i
Headset Need a headset? See our options below.
Selcof SPORT Integrated Cup Angular Contact Cartridge Bearing V2 Headset For Tapered 1" 1/8th 1.5" Fork Steerer £29.99 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.)
Planet X Superlight Headset Spacer Pack1 1/8 inch | Black £3.99 i
Planet X Headset Spacer Set1 1/8" | 15mm + 10mm + 5mm | Black £4.99 i
Spare Rear Mech Hanger We're hoping you'll never need it but you never know. Grab a spare.
Planet X Frame Replacement Rear Mech HangerXLS £24.99 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.
Selcof Zeta 6061 Alloy Stem120mm | Matt Black | 10 degrees | 31.8mm £14.99 i
Selcof Zeta 6061 Alloy Stem100mm | Matt Black | 10 degrees | 31.8mm £14.99 i
Selcof Zeta 6061 Alloy Stem80mm | Matt Black | 10 degrees | 31.8mm £14.99 i
Selcof Zeta 6061 Alloy Stem90mm | Matt Black | 10 degrees | 31.8mm £14.99 i
Selcof Zeta 6061 Alloy Stem130mm | Matt Black | 10 degrees | 31.8mm £14.99 i
Selcof Zeta 6061 Alloy Stem110mm | Matt Black | 10 degrees | 31.8mm £14.99 i
Wheels Get your bike rolling with a set of wheels, see our offers below.
Gipiemme Roccia Equipe 700c/29 Inch Disc WheelsetBlack | Shimano/SRAM 10/11sp £99.99 i
Vision Team 30 Disc Road Centre Lock WheelsetQR Front | QR 135mm Rear | Shimano 11 Speed £199.99 i

Rest of range

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