Siablo GR


  • Custom Triple Butted hydro-formed 6061 Alloy frame, disc mounts
  • Silverback Carbon fork, tapered steerer, disc mounts
  • Stan's Grail S1 700c rims
  • Weight: 10.38kg
Terms & Conditions Apply


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 700x47c 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.
Gravel Bike - Siablo GR - Silverback Bikes

Surface Components are meticulously designed to create FSS - full system synergy. Surface control parts, wheels, saddles and dropper posts are engineered to offer reliable performance and component integration.

Silverback Ergonomic Science

Your Better Riding Experience



Shop at Speedlab



Shop at Speedlab



Shop at Speedlab



Shop at Speedlab


Crankset Shimano FC-RS510, 50x34t
Cassette Shimano 105 CS-5800 11-28t, 11 Speed
Rear Der Shimano 105 RD-5800, Short Cage, 11 Speed
Front Der Shimano 105 FD-5800
Shifters Shimano 105 ST5800
Bottom Bracket BSA
Fork Silverback Advanced Dynamics Carbon Fork, 12mm Thru Axle Dropouts, Disc Mount
Rear shock -
Hubs Alex Rims Bear Pawls BRD
Rims Stan's Grail S1 700c
Tyres WTB Riddler 45c, DNA Compound, 60Tpi, Aramid Bead
Seatpost Surface Aluminium, Black
Saddle Surface Ergo, Carbon Fiber Base
Handlebar Surface Alloy Handlebar, Dia:31.8mm, Reach: 70mm, Drop: 120mm
Stem Surface Alloy Stem, 31.8mm, Rise 7°
Frame Silverback Engineered Custom Triple Butted 6061 Aluminium Tapered 1-1/8"-1.5" Headtube, Integrated Headset, 12mm Thru Axle Dropouts, Flat Mount Disc Mounts
Brake set Shimano 105 ST5800
Weight 10.38kg (Medium Frame, with tubes, without pedals)
Weight Limit 125kg
Travel -

Siablo GR Geometry
Map Type XS S M L XL XXL
A SEAT TUBE C/T 440 475 510 530 550 580
B HEAD TUBE ANGLE 71 71 71.5 71.5 72 72.5
C SEAT TUBE ANGLE 74.5 74 73.5 73.5 73 72.5
D TOP TUBE 515 532 555 570 585 600
E REACH 369.7 376.4 388.1 397.5 400.5 403.1
F CHAINSTAY LENGTH 430 430 430 430 430 430
G BB HEIGHT 288.8 288.8 288.8 288.8 288.8 288.8
H WHEELBASE 997 1011 1025 1040 1045 1049
I HEAD TUBE LENGTH 95 115 135 155 175 195
J STACK 523.8 542.7 563.5 582.5 603.4 824.4
K STANDOVER 736.1 759 782.8 800.7 818.8 841.8
L FORK OFFSET 45 45 45 45 45 45



  1. Jaco Le Roux

    The Siablo GR is a good allrounder, I personally wouldn’t ride singletrack with it, that’s what MTB’s are for. On the road it rides like a very comfortable roadbike. It is definitely not as stiff as a carbon roadbike, but that is a good thing when going on gravel. It is fast enough on tar roads. On the gravel it is fast and very forgiving. It absorbs most bumps even corrugations are absorbed. It does get little bumpy when there are a lot of bigger holes or rough rock outcrops in the road. But even a MTB doesn’t really absorb those kinds of bumps on a gravel road. All over this bike is fun to ride all day long.

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