Santiago GRX2

Photos for illustration purposes. Please check the bike spec for detailed component listings.

Santiago GRX2

Reynolds steel cycle touring road bike


Shimano GRX2 gives Santiago a wider gear range with smooth transitions

Read more

Read more

Sorry, this product isn't available at the moment.

Email When Available

Stock arriving Early 2023

Please send us this note with your email address below and we'll let you know as soon as it is available.

Santiago GRX2

We never have and never will share your information with anybody else.


Santiago knows its heritage; cold-worked, air hardened steel is steeped in the history of long distance riding. But with bang up-to-date geometry, Santiago has a refreshing feel that you know will be good for years to come: 450 mm chainstays, 1.1 m wheelbase, 71 degree head angle, a fork rake of 55 and generous tyre clearance. This makes for a truly comfortable, fast, assured bike, both in its own right (audax slaying, winter riding) or when racked up for multi-month adventures.

At a Glance

Reynolds 631 steel framed road bike with compact road set up:

..Read more
  • Frame: Sonder Santiago frame, Reynolds 631 steel
  • Fork: Sonder Santiago frame, Cromoly steel
  • Groupset: Shimano GRX2 / 2 x 11 / 11-32
  • Brakes: SRAM Rival22 hydraulic disc brakes
  • Wheelset: Sonder Nova 700c
  • Tyres: WTB All Terrain / Comp / 700 / 35
  • Tyre clearance: up to 650b x 47 mm or 700c x 37 mm
  • Bolt-through axles with 12 x 100mm up front and 12 x 142mm at the rear
  • Full rack and guard mounts, 3 sets of bottle cage bosses

The 2 x 11 gearing, with a whopping 11 – 32t cassette, offers a gear range that is wide enough to cope with any terrain, opening up the alpine passes to mere mortals with enough at the top end to cruise up on the flat. 2x builds give a wide gear range and keep the jumps between gears small.

Read less

Reynolds 631 steel tubing

Durable, smooth and assured on those multi-month trips Reynolds 631 steel is an excellent material for round-the-world touring where you’re completely dependent on your bike. We’d be surprised if you needed to get your frame repaired, but it’s comforting to know that finding a steel welder in the middle of nowhere is far easier than getting your alloy frame repaired.​

Traditional bike, contemporary geometry

Santiago’s takes classic road bike geometry as a starting point, with a longer wheelbase and higher stack height for a more comfortable riding position and assured ride, whether you’re travelling light or fully loaded up.

Generous tyre clearance

Clearance for up to 650b x 47 mm or 700c x 37 mm tyres that make your ride more comfortable and give better grip on the bitumen as you corner.

Full traditional mounts

With full rack and guard mountains, 3 sets of bottle cage bosses and extra cage mounts on the fork, Santiago can handle being fully loaded up.

Build Spec
Finishing Kit
Frame: Santiago Frame
Fork: Santiago Fork
Headset: FSA Orbit MX Headset / 1.125
Group Set
Left Brake: Shimano GRX [RX-600/RX400] Shifters / Hydraulic / Left / 2x / Flat
Right Brake: Shimano GRX [RX-600/RX400] Shifters / Hydraulic / Right / 11x / Flat
Calipers: SRAM Rival Flat-Mount Hydraulic Calipers
Rotors: Shimano RT66 Rotor / 6 Bolt / 160mm
Rear Mech: Shimano GRX RX810 Rear Derailleur / 11 / Double
Chainset: Shimano GRX Crankset [RX600 HT] / 2x / 172.5mm / 46 30t
Bottom Bracket: Shimano BB52 Bottom Bracket
Chain: Shimano HG601 Chain / 11 / 118 Links
Cassette: Shimano GRX M7000 Cassette / 11 / 11-32
Stem: Sonder Storc / 100mm
Seatpost: Sonder Seatpost / 27.2mm / 400mm
Saddle: Sonder Zone / 152 / Black
Tape/Grips: Sonder Reels / Black
Handlebar: Love Mud Hurricane / 420mm
Wheels: Sonder Nova 700c Wheelset / Shimano
Tyres: WTB All Terrain / Comp / 700 / 35
Tubes: WTB Inner Tube / 700 / 38-45
Frame & Fork: S: 3.3kg; M: 3.5kg; L: 3.7kg; XL: 3.9kg
Pedals not included with full builds
Geometry and Sizing


Generally we recommend:
Riders between 5ft 2in and 5ft 7in
Riders between 5ft 6in and 5ft 10in
Riders between 5ft 9in and 6ft 2in
Riders 6ft 2in and over
You can also take into consideration the standover height to ensure you pick a bike that will be a good fit. If you measure your inside leg and ensure there is a minimum of an inch from the toptube to your crotch this will give you enough seatpost adjustment to find your optimum saddle height.
Size Small Medium Large X-Large
ST - Seat tube 470 500 530 570
TT - Top tube 543 563 584 605
HT - Head tube 120 140 160 180
HA - Head angle 71 71 71 71
SA - Seat angle 73 73 72.5 72.5
CS - Chainstay 450 450 450 450
BB - BB drop 73 73 73 73
FO - Fork offset 55 55 55 55
WB - Wheelbase 1042 1063 1085 1106
SO - Stand over TBC TBC TBC TBC
RE - Reach 370 385 400 415
SK - Stack 566 585 604 623
Fork A-C 395 395 395 395
Frame Spec

Durable, comfortable, Reynolds steel frame

Weight (Frame and Fork): S: 3.3kg; M: 3.5kg; L: 3.7kg; XL: 3.9kg
Reynolds 631 steel, cold worked, air hardened seat tube, top tube and down tube
Chromoly fork and read frame
68 mm BSA threaded BB
Straight headtube (EC34) to fit 1 1/8” fork
100 mm front, 142 mm rear bolt-through dropouts
Standard 160 mm post mount disc brakes
Full rack/guard mounts
Tyre clearance for 700 x 37 mm, 650b x 47 mm tyres