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The Orro Terra Gravel equipped with a Shimano 105 groupset with hydraulic disc brakes is an extremely versatile gravel road bike suitable for anything from the daily commute to weekend adventure rides


Orro Terra Gravel Shimano 105 Hydro Gravel Road Bike in Copper


Orro Terra Gravel Shimano 105 Hydro Gravel Road Bike in Copper

Season : 2020

Brand : Orro


Weight : 20KG

The Terra Gravel Shimano 105 Hydraulic Disc is Orro’s original gravel bike, the latest iteration of this very popular bike has been updated to enable wider 35mm tyres to be fitted.

Equipped with the ever-dependable Shimano 105 drivetrain, hydraulic disc brakes and a Fulcrum Racing 900 wheel package this Terra Gravel is an extremely versatile bike equally at home on the daily commute or long weekend venture rides.

The Orro Bikes design team is based at the foot of the Iconic Ditchling Beacon climb in East Sussex an area of outstanding natural beauty, a feature each year on the annual London to Brighton Bike ride and almost every major UK professional Cycle race that has been held within the UK.

Each Orro bike is designed from the ground up with a UK riders perspective in mind, almost all models are hand-assembled by the Orro technicians at their Ditchling assembly facility

Key Features and Benefits

  • Built using triple-butted 6061 aircraft grade aluminum the frame is equally adept at adventures as it is commutes.
  • Designed with venturesome riders in mind; those who may want to take the shortcut along the towpath; hammer the bridleways instead of the tarmac.
  • This latest version of the Terra Gravel now comes with 35mm tyre clearance (32mm with guards) which allows for ultimate control, comfort and grip.

Full Specification

  • Frame:  Terra Gravel Frame Thru Axle
  • Fork:  Terra Gravel Fork Thru Axle including Thru Axles
  • Number of Gears:  22
  • Gear Shifters:  Shimano 105 STI Black
  • Chainset:  Shimano 105 172.5mm Black
  • Chainrings:  50/34T
  • Rear Cassette:  Shimano 105 11-30T
  • Chain:  Shimano HG-601
  • Front Derailleur:  Shimano 105 Black
  • Rear Derailleur:  Shimano 105 SS Cage Black
  • Bottom Bracket:  Shimano BB-RS500 Press-fit
  • Pedals:  N/A
  • Rims:  Fulcrum Racing 900 Wheelset
  • Front Hub:  Fulcrum Racing 900 Wheelset
  • Rear Hub:  Fulcrum Racing 900 Wheelset
  • Front Tyre:  Vittoria Zaffiro IV 700x28c
  • Rear Tyre:  Vittoria Zaffiro IV 700x28c
  • Brakes:  Shimano 105 Disc 7000 Hydraulic, with 140mm rotors
  • Handlebars:  Deda Zero 1 Alloy
  • Handlebar Tape:  Orro Bar Tape Black 3.0mm
  • Headset:  Token Omega A83/2 1-1/8 + 1.5 Black
  • Stem:  Deda Zero 1 Alloy
  • Saddle:  Prologo Kappa-3 STN Black/Black '17
  • Seatpost:  Token Offset Seatpost 27.2x350mm
  • Accessories:  N/A
  • Weight:  N/A

Road Bike Sizing Guide

Road bikes as the name implies are for road use. There are a growing number of “gravel” or “adventure” bikes which are based on road bicycles, but feature wider and more versatile tyres and disc brakes, so you can also do light trail riding such as towpaths. They are also more pothole resistant!

Sizing is normally in cm, and is a measurement from the centre of the chain-wheel axle (The BB or bottom bracket) and the top of the frame seat tube. Some are measured to the centre of the seat tube where it meets the top tube (otherwise known as the crossbar).

That measurement is on road bikes normally in CM – and no-one really knows why! Some road bikes will use “T-Shirt Sizing” so S, M, L, XL etc. but there will be a geometry chart that then shows the measurement in CM.

What is your height? Your suggested bicycle size
Feet/Inches Centimetres Suggested Size
4'10" - 5'0" 148cm - 152cm XX-Small (47-48cm)
5'0" - 5'3" 152cm - 160cm X-Small (49-50cm)
5'3" - 5'6" 160cm - 168cm Small (51-53cm)
5'6" - 5'9" 168cm - 175cm Medium (54-55cm)
5'9" - 6'0" 175cm - 183cm Large (56-58cm)
6'0" - 6'3" 183cm - 191cm X-Large (58-60cm)
6'3" - 6'6" 191cm - 198cm XX-Large (61-63cm)

If you need any more advice on bike sizing for road bikes please contact us and we can help you make the right choice.

Technical Information

Geometry for Orro Terra Gravel 2020 Gravel Road Bike

Orro Terra Gravel Geometry Chart

  X-Small Small Medium Large X-Large
A. Effective Top Tube (mm) 502 526 551 579 607
B. Head Tube (mm) 100 130 160 192 225
C. Head Tube Angle 72.0° 72.2° 72.5° 72.7° 73°
D. Wheelbase (mm) 978 995 1012 1029 1047
E. Seat Tube Angle 75.6° 74.9° 74.2° 73.3° 72.6°
F. Chainstay Length (mm) 425 425 425 425 425
G.Stack (mm) 517 546 574 606 637
H. Reach (mm) 368 377 387 397 407


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