silverback SIABLO CF GRX 2025
2025 Road
Estimate price |
3,489$
Weight | 9.5 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Carbon -
Groupset GRX 800, GRX 600 -
Suspension Rigid -
Drivetrain 1 × 11 -
Brakes Shimano GRX 400 Hydraulic Disc
Sizing
Recommended size guide.
XS
152cm - 161cm
SM
159cm - 169cm
MD
167cm - 176cm
LG
174cm - 184cm
XL
182cm - 192cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Full Carbon Frame, Internal Cable Routing, Flat-mount Disc Brake Mounts. Supports 700C and 650B Wheelsize, including Internal Routed Dropper Post Compatible.
Suspension Fork
700C Full Carbon Fork, 100x12mm Hub Spacing, for Internal Cable Routing
Drivetrain
Rear Derailleur
Shimano RD-RX810 GRX Rear Derailleur, 11 speed, Direct Attachment
Shift Levers
L: Shimano ST-RX600 with BR-RX400 (F) Disc Brake Assembled, J-Kit
Cassette
Shimano CS-M5100 Deore Cassette, 11 speed, 11-42T
Crank
Shimano GRX FC-RX600, 11 speed, 40T, 175mm
Bottom Bracket
Pressfit PF30
Chain
Shimano CN-HG601-11 Chain, 120 Links
Pedals
Not Included
Wheels
Front Hub
F: 12x100mm
Rear Hub
F: 12x100mm
Rims
Vision Alloy, 27mm Internal Width, 30mm height, 28H
Tires
Vittoria Terreno Dry 700x38c
Brakes
Brakes
Shimano BR-RX400 Hydraulic Disc
Cockpit
Stem
SURFACE Alloy Stem, 31.8mm, Rise 7°
Handlebar
SURFACE Alloy Handlebar, Dia: 31.8mm, Reach: 77mm, Drop: 128mm, Flare: 16°
Grips
Surface Handlebar Wrap, Seude Black, Plug with Expander Bolt
Headset
Token A83-15 Headset, IS52/40 IS52/40
Seat
Saddle
SURFACE Saddle, Steel Rails
Seatpost
SURFACE Alloy, 27.2mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.447 mm | 1.485 mm | 1.511 mm | 1.532 mm | 1.546 mm |
| Bottom Bracket Height | 286 mm | 286 mm | 286 mm | 286 mm | 286 mm |
| Front Center | 593 mm | 598 mm | 598 mm | 609 mm | 625 mm |
| Rake | 48 mm | 47 mm | 47 mm | 47 mm | 48 mm |
| Trail | 73 mm | 70 mm | 67 mm | 64 mm | 63 mm |
| Stack | 537 mm | 557 mm | 568 mm | 590 mm | 609 mm |
| Reach | 371 mm | 375 mm | 376 mm | 385 mm | 394 mm |
| Top Tube Length | 520 mm | 535 mm | 550 mm | 565 mm | 580 mm |
| Seat Tube Angle | 74.5 ° | 74 ° | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 490 mm | 520 mm | 540 mm | 560 mm | 580 mm |
| Head Tube Angle | 70.5 ° | 71 ° | 71.5 ° | 72 ° | 72 ° |
| Head Tube Length | 120 mm | 140 mm | 150 mm | 170 mm | 190 mm |
| Chainstay Length | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm |
| Wheelbase | 1010 mm | 1015 mm | 1015 mm | 1026 mm | 1042 mm |
| Bottom Bracket Drop | 63 mm | 63 mm | 63 mm | 63 mm | 63 mm |
| Standover Height | 751 mm | 778 mm | 798 mm | 815 mm | 833 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 152 cm | 159 cm | 167 cm | 174 cm | 182 cm |
| Rider Max Height | 161 cm | 169 cm | 176 cm | 184 cm | 192 cm |