Siablo GR

  • Gallant Grey / Aston Black / Peridot Lime
  • Gallant Grey / Aston Black / Peridot Lime
  • Gallant Grey / Aston Black / Peridot Lime
  • Gallant Grey / Aston Black / Peridot Lime


Siablo GR


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

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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.

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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.

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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.

A super versatile alloy gravel bike.

The Siablo GR has been designed from the ground up as a gravel bike, utilizing a different frame to the Siablo CX, the GR exceeds the broad demands put on the gravel category. Designed with current trends and future insight the Siablo GR is an extremely versatile bike, capable of fitting up to 700x45c tyres or 650b road plus should you want the extra comfort. Rack mounts, threaded BB, and mechanical disc brakes mean that the Siablo GR is practical and easy to service with basic tools.
 Silverback Siablo GR Gravel Bike

Hydro formed butted alloy frame

Siablo GR's frame is manufactured from hydro formed, butted 6061 alloy tubing making for a very strong frame. For this kind of application - a gravel frame, 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.

 Silverback Siablo GR Gravel Bike

SBC fork

The SBC 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. Fitted with bottle bosses on both stanchions, it greatly increases hydration capacity of the frameset. The bosses also double up as pannier mounts to increase load capacity of the Siablo GR.


 Silverback Siablo GR Gravel Bike


 Silverback Siablo GR Gravel Bike









  1. Siablo GR is designed to require minimal maintenance, and features reliable, quality components and tubeless ready wheels. No one wants to be stranded on an adventure.
  2. The GR frame has space for 2 full oversized water bottles inside the frame.
  3. The compact frame is nimble, even though the geometry is very comfortable on long rides.
  4. The lightweight SBC carbon fork has an integrated fender mounting hole, as well as 2 more water bottle or accessory mounts.
  5. Cable disc brakes are easy to adjust and maintain, and works well in all weather and terrain conditions.


Alloy GR Frame

Siablo GR is a stand alone gravel focused frame with unique geometry. The frame is designed to deal with the demands of the modern gravel enthusiast.

Gravel focused Geometry

The wheelbase of the frameset is semi-short to retain a trail capable bike, with good weight distribution under load. A slack head angle makes for a terrain capable front end that will roll challenging obstructions. The steeper seat angle aids in ascending more efficiently, with better power transfer at variable gradient increase. The GR is super capable and wants to be challenged.

Internal routing

Internal routing 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.

SBC fork

The SBC 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. Fitted with bottle bosses on both stanchions, it greatly increases hydration capacity of the frameset. The bosses also double up as pannier mounts to increase load capacity of the Siablo CF.

Disc brakes

Siablo GR features mechanical cable actuated disc brakes. Disc brakes offer all-weather performance, great modulation


CranksetShimano FC-RS510, 50x34t
CassetteShimano 105 CS-5800 11-28t, 11 Speed
Rear DerShimano 105 RD-5800, Short Cage, 11 Speed
Front DerShimano 105 FD-5800
ShiftersShimano 105 ST5800
Bottom BracketBSA
ForkSilverback Advanced Dynamics Carbon Fork, 12mm Thru Axle Dropouts, Disc Mount
HubsAlex Rims Bear Pawls BRD
RimsStan's Grail S1 700c
TyresWTB Riddler 45c, DNA Compound, 60Tpi, Aramid Bead
SeatpostSurface Aluminium, Black
SaddleSurface Ergo, Carbon Fiber Base
HandlebarSurface Alloy Handlebar, Dia:31.8mm, Reach: 70mm, Drop: 120mm
StemSurface Alloy Stem, 31.8mm, Rise 7°
FRAMEFrameSilverback Engineered Custom Triple Butted 6061 Aluminium Tapered 1-1/8"-1.5" Headtube, Integrated Headset, 12mm Thru Axle Dropouts, Flat Mount Disc Mounts
Brake setShimano 105 ST5800
Weight10.38kg (Medium Frame, with tubes, without pedals)
Weight Limit125kg - combined weight of bike and rider (including all kit). 

Disclaimer: Due to the nature of bike manufacturing, specification & finishes, component availability and price may be subject to change without prior written notification. Also images may not match final specifications due to component availability.

Due to Covid-related scheduling and component availability challenges, bike specifications are subject to change without notice. Specifications may not be exactly what is shown in the photo.


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.



  • What type of terrain is the Siablo GR suitable for?

    The Siablo GR is best suited to on-road and light off-road use.

  • Can I fit a kickstand to my Siablo GR?

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

  • Can I fit 27.5" wheels to the Siablo GR?

    Yes, the maximum clearance is 1.8".

  • What is the low gear capacity for the rear derailleur?

    The derailleur low gear capacity is 28T.

  • What type of brakes does the Siablo GR have?

    The Siablo GR has mechanical disc brakes.

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

    The Siablo GR has a maximum tyre clearance of 45C.


Customer Reviews

Based on 2 reviews Write a review



"The "gravel" bike could be considered the most interesting invention in the field of cycling. Gravel bike is a bike that combines almost all the advantages of mtb and running in one bike."

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"Silverback lansează noua Siablo GR pentru, gravel”

"We have recently seen a rather surprising increase in the popularity of gravel bikes. Not of the sliders or of the cyclocross but of the models dedicated especially for "gravel"."

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