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Ridley Orion/Shimano 105 Complete Road Bike - 2012

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Item # RID000L

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Item # RID000L


Don't be fooled by the low price of the Ridley Orion/Shimano 105 Complete Road Bike - 2012. High tech frame details, a smart component spec, and a ride quality that traces right back to Ridley's ProTour-level Damocles and Excalibur frames make it more than just a great value.

The Orion has an oversized, semi-round/semi-square down tube with a reinforced bottom bracket that maximizes both stiffness and power transfer. It's reminiscent, in our minds, of the "Squoval" tubing on the Cervélo R3 — it's rounded boxy shape is difficult to explain in words, but it's directly correlated to its resistance to both torsional and lateral flex. It's no different from the Helium, Noah, Damocles, and Excalibur: The Orion is a pure race bike, and it's at home in any conditions — flat or hilly, smooth roads or jarring. And not unlike the Excalibur, Ridley built the Orion to deliver the sort of compliant ride that's nice on sub-two hour rides, but absolutely necessary when you're out for four-plus hours. You can rest assured that its stiffness under power doesn't make it a jackhammer on chip and seal roads.

Also like other Ridley frames raced in the professional circuit, the Orion has been built with a monocoque design. This one-piece construction method allows for enhanced quality control and a lighter final structure. It's made from 24-ton carbon fiber. By definition, it has a tensile strength of 24 tons-per-square-millimeter. It's less expensive than the 30-ton and 40-ton carbon used in the Damocles and Noah, which means that Ridley has to use a bit more of it to achieve the intended stiffness and strength. However, the Orion forgoes a 3K weave cosmetic layer of carbon, instead it's all unidirectional fabric and is simply painted. With all that to say, the Orion weighs in within 100 grams of the Damocles and costs an astonishing 40% less.

Shimano's venerable 105 group handles shifting and braking duties, while a FSA Gossamer 50/34t compact crankset and Tiagra 12-25t cassette round out the drivetrain. For the rest of the build, Ridley's own 4ZA Stratos components make up the bulk of it. The 4ZA Stratos alloy bar and stem are an excellent complement to the 4ZA R-Blade carbon/aluminum fork. And in keeping with the theme of speed, the included Fulcrum Racing 7 wheels are light enough to race on, yet tough enough to handle any roads you'll encounter. These wheels have been cased with Vittoria Rubino Pro II 23c tires.

The Ridley Orion/Shimano 105 Complete Road Bike - 2012 is available in the color Red and in the size X-Large. Given its sloping geometry, we strongly suggest that you focus on the virtual top tube length as you make a determination of the proper size. It uses an integrated 1-1/8in headset, a 31.6mm seatpost, an English bottom bracket, and a 34.9mm clamp-on front derailleur.

Tech Specs

Frame Material:
Carbon fiber
Fork Material:
[blades] carbon fiber, [dropouts] aluminum
1.125 in FSA Integrated
Shimano 105
Front Derailleur:
Shimano 105
Rear Derailleur:
Shimano 105
50/34 t FSA Gossamer
Crank Arm Length:
172.5 mm
Bottom Bracket:
68mm English
not included
12-25 t Shimano Tiagra
Shimano 105
Brake Levers:
Shimano 105
Brake Calipers:
Shimano 105
4ZA Stratos
Handlebar Width:
42 cm
Bar Tape:
4ZA Stratos
Prologo Kappa
4ZA Stratos
Fulcrum Racing 7
Continental Ultra Sport
Tire Size:
700 c x 23 mm
Claimed Weight:
18.78 lb
Recommended Use:
road cycling and racing
Manufacturer Warranty:
5 years on frame

sizing chart

Bike size by rider height


Geometry chart


Geometry Chart



Seat Tube


Effective Top Tube






Stand Over

Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop




XXS 45.0cm 51.5cm 50.5cm 38.0cm 69.0cm 11.0cm 72.0o 75.0o 6.8cm 40.5cm 96.9cm
XS 48.0cm 52.5cm 53.0cm 37.5cm 74.0cm 13.0cm 72.0o 74.0o 6.8cm 40.5cm 97.4cm
S 51.0cm 54.5cm  54.5cm 38.5cm 75.0cm 14.5cm 73.0o 73.5o 6.6cm 40.5cm 97.7cm
M 54.0cm 56.5cm 57.5cm 39.0cm  78.0cm 17.5cm 73.5o 73.0o 6.6cm 40.5cm 99.0cm
L 57.0cm 58.5cm 60.2cm 40.0cm  81.0cm 20.5cm  73.5o 72.5o 6.3cm 40.8cm 100.3cm
XL 60.0cm 60.0cm 62.5cm 40.5cm 84.0cm 23.0cm 74.0o 72.5o 6.3cm 40.8cm 101.2cm

Ridley Orion Geometry Chart

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