Siablo CX Ultegra


Siablo CX Ultegra


Price incl. VAT excl. Local Import Taxes & Shipping Costs.

Bike Finance 'Find out more'

BTBF Members Qualify for a 5% Discount


Secured and trusted checkout with:


Hands of Hope

Your Purchase does good, gives back and makes a lasting impact. 5% of profits of all products is donated to the Joyce Meyer Hands of Hope Initiative. No cost to you.

Joyce Meyer Ministries - (

Homes on Heads

With Your Purchase of any Helmet, you contribute to placing more Homes on Heads. Make a lasting impact to those who are homeless, or who may have lost their homes due to any national disaster. 5% of profits of helmets gets donated to the Joyce Meyer Ministries who will help us with this Initiative. No cost to you.

Joyce Meyer Ministries - (


SPEEDLAB ships from Monday to Friday with the exception of public holidays. We ship complete orders only, i.e. the dispatch usually takes place as soon as all ordered items are ready for dispatch. Please contact the SPEEDLAB service team if you wish a partial delivery.


Depending on destination country, package size, volume and weight, SPEEDLAB ships with the carriers German Post, DHL, German parcel service, DPD, USP. Deliveries of bulky goods, for example complete bicycles, will be handled by selected forwarding companies.

For return shipments SPEEDLAB cooperates with German Post, DHL and DPD. Large bulky goods like bicycles will be picked up by a forwarding company.

In Germany and most European countries the are shipped with DHL, Hermes, DPD, UPS, German Post.




  • Germany 5,99 Euro DHL / DPD / Hermes / German post
  • Rest of Europe: 13,99 Euro (DHL, DPD, Hermes)
  • Rest of world: 29,99 Euro DHL
  • Cash on Delivery + 4,9 €


For all items marked with this symbol, which are ordered on business days from Monday to Friday by 3 p.m. (CET), we offer the DHL Express shipping option or UPS for selected delivery countries. The DHL Express&UPS option is subject to an additional surcharge. It can be selected during the ordering process, provided that all items in the shopping cart offer the Express option. In addition the DHL Express option must be available for the selected delivery adress.

An order within the EU usually arrives the following business day. Depending on the postal code of the delivery address, longer parcel delivery times may occur.


  • Germany 15 Euro (DHL, UPS, TNT)
  • Rest of Europe – 49 EURO (DHL, UPS, TNT )
  • Rest of world – on request

In-stock items will be shipped within Germany in 1-2 working days, within Europe and worldwide in 1-3 working days. Unfortunately the delivery at a certain date given by you is not possible due to logistic reasons.

Should the ordered item not be in stock, the delivery time is extended analogue to the delivery in our warehouse. Information regarding the availability can be obtained at +49-7022-9-777-818 or

Please note: The ordered goods may be subject to a partial delivery.

Import Taxes, Customs Duties and Fees / National VAT

The indicated prices including VAT. In addition to the calculated SPEEDLAB shipping costs customers not living in the EU have to pay the national VAT and duty in their country for the imported goods.

Transport Damage

If you receive a damaged shipment please refuse the receipt if possible. Anyway, please get in touch with the Bike24 service team by e-mail or phone as soon as possible. We will be happy to solve the issue.


The SPEEDLAB team will do its best to fulfill your change requests.

The wish to cancel must be declared within 14 days after receipt of the goods. The return must take place within 14 days after the declaration of the cancellation.

Before the actual dispatch of your order, it can still be canceled. Please send us your request as soon as possible using the contact form or call us by phone. Should the payment have been charged already, it will be refunded in a timely manner.

Pack everything you want to return to SPEEDLAB carefully and include your order number. Remove the old shipping label and attach the return label to the package. You can return the package at DHL and Hermes stations. For all other countries: Please contact us with your return request and our customer service will arrange the process. Usually, SPEEDLAB covers the return costs.

A return will be processed at SPEEDLAB within a few working days. Once your request has been successfully processed it will be confirmed by e-mail. A possibly necessary refund will be processed directly afterwards.

Ultegra Cyclocross race bike, ready to get dirty.

Siablo CX Ultegra is a dedicated cyclocross race bike, proven on the world cup circuit with the OMX Pro team. Featuring an Ultegra groupset, the CX Ultegra is ready to get dirty.

6061 Hydro formed Alloy frame

Siablo CX's frame is manufactured from hydro formed, butted 6061 alloy tubing making for a very strong frame. For this kind of application - a CX race bike, a strong aluminium frame is a reliable choice. Hydro forming is a process to shape alloy tubing from the inside, using pressurized water and/or oil into a negative mold cavity resulting in stronger thin wall tubing.

Ultegra Groupset

Shimano's Ultegra 6800 2x11spd is the groupset of choice on the CX Ultegra. ULTEGRA series is "pro-proven" as it is a direct trickle down from the DURA-ACE groupsets. It stands for state-of-the-art technology, proven in pro races, the technology used in ULTEGRA 6800 series with 11-speed, advanced designed brakes, latest chain treatments etc.










  1. The CX frame is custom triple butted hydro-formed 6061 alloy. That means the end point wall thickness of the tubes are thicker where they are welded, with the middle wall thickness thinner, making them strong where they need to be, yet resulting in an overall lighter frame.
  2. CX race circuit tested geometry. OMX Pro team rode and tested these bikes during race season, ensuring that it works like it should.
  3. Shimano Ultegra groupset is a firm favourite for plenty of CX enthusiasts, offering quality, reliability and great performance.
  4. Gone are the days of the squeak without actually slowing down. Rim brakes are out and disc brakes are in. And no rim explosions due to excessive brake surface wear.
  5. The Siablo is make to stand out, durable bright graphics under the clearcoat, will look great covered in mud and grass!
  6. At this price you will be hard pressed to find another quality bike that comes close to this level of specification. BIC - yes please!


CX race Geometry

Geometry of the Siablo CX has been fine tuned for the specific needs of CX athletes. Balance, traction, power delivery and great handling are all positively influenced by the geometry.

6061 Hydro formed Alloy frame

Siablo CX's frame is manufactured from hydro formed, butted 6061 alloy tubing making for a very strong frame. For this kind of application - a CX race bike, a strong aluminium frame is a reliable choice. Hydro forming is a process to shape alloy tubing from the inside, using pressurized water and/or oil into a negative mold cavity resulting in stronger thin wall tubing.

Internal routing

Internal routing on the CX frame keeps the cockpit neat and cables out of harm's way. Also full length housing internal cables have less chance s of dirt ingression, keeping maintenance down.

Thru axle dropouts

Thru-axles effectively bolt the wheel to the frame or fork. By comparison, QR systems only slot in place, and compress the dropout to retain the wheel. The increased strength and stiffness of thru-axles can be attributed to both the increase in effective engagement area and the fixing mechanism to the dropout. The thru-axle system is significantly safer, with fewer points for potential failure.

Carbon CX fork

The Siablo CX carbon race Fork has all-round performance, while retaining absolute functionality. Equipped with fender mounts to protect both rider and components from unwanted debris spray in wet conditions. This fork features internal routing, disc mounts and is super light.

Disc brakes

Siablo CX features hydraulic disc brakes. Hydraulic disc brakes offer a light lever feel, all-weather performance, great modulation and plenty of stopping power.


Fulcrum Racing 700 DB, Asymmetric, alloy double Wall wheels, with Schwalbe Racing Ralph, 700 x 33c tyres means that the CX is race ready.


CranksetShimano Ultegra FC-6800, 50/34T, 49/52cm: 170mm; 54/56/58/61cm: 175mm Black
CassetteShimano Ultegra CS-6800, 11 Speed, 11-25T
Rear DerShimano Ultegra RD-6800, 11 Speed
Front DerShimano Ultegra FD-6800, Double, Braze-on
ShiftersShimano Ultegra ST- RS685, 2 x 11
Bottom BracketPF30
ForkSilverback Advanced Dynamics Carbon Fork, Tapered Carbon Steerer w/Tuned offset, 12mm Thru Axle Dropouts, Disc Mount
RimsFulcrum Racing 700 DB, Asymmetric, Alloy Double Wall, Black
TyresSchwalbe Racing Ralph, 700 x 33c, Folding, Black
SeatpostSector, Alloy, Dia 27.2mm, XXS: 300mm; L: 350mm For All Other Sizes, Black
SaddlePrologo Kapa RS, STN Rail
HandlebarSector Arc, Alloy, Short Drop Bar System, W: XXS/XS: 400mm; S/M/L: 420mm; XL: 440mm, Dia 31.8mm, Black
StemSector, Alloy, XXS: 70mm; XS/S/M: 90mm; L: 100mm; XL:110mm, 7° x Dia 31.8mm, Black Anodized
FrameSilverback Engineered Custom Triple Butted 6061 Aluminium with Smooth Weld Technology, Tapered 1-1/8"-1.5" Headtube, Integrated Headset, 12mm Thru Axle Dropouts, Flat Mount Disc Mounts, Replaceable Alloy Hanger
Brake setShimano Ultegra BR-R8020, Black
Weight9.5kg est
Weight Limit125kg - combined weight of bike and rider (including all kit). 

Disclaimer: Due to the nature of bike manufacturing, specification, finishes and price may be subject to change without prior written notification.


Proper bike fit is as important as getting the right bike for the job. Long term comfort and performance can be greatly improved with the right size bike. This acts as a guide only, so if you are unsure, please visit your Silverback reseller to be professionally measured and sized for the perfect fit.



  • Would I be able to run 27.5" tyres on this bike?

    No, the Siablo CX is compatibley with 700C wheel size.

  • Does the frame have fender mounts?

    Yes, the frame has fender compatible mounting points.

  • What is the maximum tyre clearance of the Siablo CX?

    The Siablo CX has a maximum tyre clearance of 33C.

  • Does the Siablo CX have a carbon fork?


  • Does the Siablo CX frame have a kickstand mount?

    Yes, the Siablo CX has an 18mm kickstand mount. Compatible with the Speedkit Kickstand CL-KA98 on Speedlab.

  • What is the warranty on this frame?

    Limited lifetime warranty

  • What type of brakes does the Siablo CX have?

    The Siablo CX has hydraulic disc brakes.


Customer Reviews

Based on 3 reviews Write a review

Recently Viewed.