Quiver

2018 Specialized Tarmac Ultralight vs 2018 Orbea Orca Aero Base

We can't match sizes for these two: one of them has no stack and reach for the sizes shown.

What changes on the Orbea Orca Aero Base

Frame stack
n/a
One of the bikes has no number for this
Frame reach
n/a
One of the bikes has no number for this
Wheelbase
n/a
One of the bikes has no number for this
Head angle
n/a
One of the bikes has no number for this
Chainstays
+3 mm
Longer: more planted

The two frames

2018 Specialized Tarmac Ultralight (54)The Specialized Tarmac Ultralight frame drawn to scale.J 973

Only the Specialized Tarmac Ultralight is drawn. The Orbea Orca Aero Base numbers we have for size 47 are missing the reach, stack, head angle, seat angle and wheelbase.

Geometry side by side

MeasurementSpecialized Tarmac Ultralight 54Orbea Orca Aero Base 47Difference
Reach384mmnot listed
Stack544mmnot listed
Head tube angle73°not listed
Seat tube angle74°not listed
Effective top tube540mmnot listed
Chainstay length405mm408+3 mm
Wheelbase973mmnot listed
BB drop72mmnot listed
BB height268mmnot listed
Standover775mmnot listed
Seat tube length481mmnot listed
Fork length363mm370+7 mm
Head tube length143mmnot listed

Differences are the Orbea Orca Aero Base minus the Specialized Tarmac Ultralight. Full charts: 2018 Specialized Tarmac Ultralight, 2018 Orbea Orca Aero Base.

Where each sits in its class

Specialized Tarmac UltralightOrbea Orca Aero Base

AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted

Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.

What each ships with

The stock build of each bike's first listed trim. Parts that match are dimmed.

PartSpecialized Tarmac UltralightS-Works UltralightOrbea Orca Aero Base
FrameSpecialized S-Works Tarmac SL6not listed
ShifterSpecialized C-clipsnot listed

Know what is on every bike.

Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.

Explore the app
A Transition Relay build sheet: frame, fork, shock and drivetrainThe Relay’s ride photo galleryThe Relay’s ride spectrum and 2D frame geometryThe garage: five bikes and 99 recorded partsA Specialized Tarmac SL8 road build sheet