Quiver

2015 Specialized Tarmac Pro Disc Race UDi2 vs 2015 Specialized Allez Elite

The Specialized Allez Elite size closest to your 54 is the 54. Compare the 54 instead

What changes on the Specialized Allez Elite

Compared with the Specialized Tarmac Pro Disc Race UDi2 in 54, the Specialized Allez Elite in 58 places the top of the head tube 62 mm higher and 15 mm further forward, relative to the bottom bracket. Its wheelbase is 29 mm longer, which can contribute to stability at speed.

Frame stack
+62 mm
Higher front end
Frame reach
+15 mm
Longer frame reach
Wheelbase
+29 mm
Longer: steadier at speed
Head angle
+0.5°
Steeper: sharper steering
Chainstays
+2 mm
About the same

The two frames

2015 Specialized Tarmac Pro Disc Race UDi2 (54) and 2015 Specialized Allez Elite (58), lined up at the bottom bracketBoth frames drawn to scale. The Specialized Tarmac Pro Disc Race UDi2 is drawn in full with its measurements, and the Specialized Allez Elite is the colored outline on top.J 978

Specialized Tarmac Pro Disc Race UDi2, 54Specialized Allez Elite, 58Drawn to scale and lined up at the bottom bracket.

Geometry side by side

MeasurementSpecialized Tarmac Pro Disc Race UDi2 54Specialized Allez Elite 58Difference
Reach387mm402mm+15 mm
Stack543mm605mm+62 mm
Head tube angle73°73.5°+0.5°
Seat tube angle73.5°73°−0.5°
Effective top tube548mm587mm+39 mm
Chainstay length405mm407mm+2 mm
Wheelbase978mm1007mm+29 mm
BB drop69mm67.5mm−2 mm
Standover775mm817mm+42 mm
Seat tube length481mm540mm+59 mm
Head tube length140mm205mm+65 mm

Differences are the Specialized Allez Elite minus the Specialized Tarmac Pro Disc Race UDi2. Full charts: 2015 Specialized Tarmac Pro Disc Race UDi2, 2015 Specialized Allez Elite.

Where each sits in its class

Specialized Tarmac Pro Disc Race UDi2Specialized Allez Elite

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 Pro Disc Race UDi2Pro Disc Race UDi2Specialized Allez EliteElite
ShifterShimano 785 Di2Shimano Tiagra
DerailleurShimano Ultegra Di2Shimano Tiagra
CassetteShimano UltegraShimano Tiagra
ChainShimano UltegraKMC X-10
WheelsetRoval Rapide CL 40 SCSSpecialized AXIS Classic
TireSpecialized Turbo ProSpecialized Espoir Sport
BrakeShimano 785Specialized Axis 1.0
SaddleSpecialized Toupe ExpertSpecialized Toupé Sport
Cranksetnot listedShimano Tiagra

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