2018 Specialized Bicycles Amira Base

Category
Triathlon
Design
Drop Bar, Rigid, non-suspension corrected
Frame
Carbon/Composite
Fork
Carbon/Composite
Features
Rim brake, Women's
Very upright stack and reachvs category
Very upright stack and reachvs category
Very upright stack and reachvs category
Very upright stack and reachvs category
Very upright stack and reachvs category

Geometry

44
48
51
54
56
Stack
504mm
516mm
529mm
548mm
565mm
Reach
365mm
371mm
378mm
378mm
380mm
Stack to Reach Ratio
1.38:1
1.39:1
1.4:1
1.45:1
1.49:1
Seat Tube Length, C-T
390mm
420mm
460mm
490mm
510mm
Top Tube Length, Effective/Horizontal Center
491mm
502mm
515mm
535mm
547mm
Top Tube Slope
15.3deg
12.9deg
9.6deg
8.5deg
8.2deg
Head Tube Angle
70.5deg
71.25deg
72deg
72deg
72deg
Seat Tube Angle
76deg
76deg
76deg
74deg
74deg
Head Tube Length
105mm
115mm
125mm
145mm
165mm
Bottom Bracket Drop
73mm
73mm
73mm
73mm
72mm
Bottom Bracket Height
262mm
262mm
262mm
262mm
263mm
Chainstay Length
405mm
405mm
405mm
405mm
408mm
Chainstay Length Horizontal
398.4mm
398.4mm
398.4mm
398.4mm
401.6mm
Front-Center
576.3mm
580.2mm
582.2mm
588.2mm
596.8mm
Front-Center Horizontal
571.6mm
575.6mm
577.6mm
583.6mm
592.4mm
Wheelbase
970mm
974mm
976mm
982mm
994mm
Fork Offset/Rake
54mm
54mm
49mm
49mm
49mm
Fork Length (Axle-To-Crown)
369mm
369mm
369mm
369mm
369mm
Trail
61.3mm
mid/​neutral
56.7mm
mid/​neutral
57.3mm
mid/​neutral
57.3mm
mid/​neutral
57.3mm
mid/​neutral
Mechanical Trail
57.8mm
53.7mm
54.5mm
54.5mm
54.5mm
Wheel Flop
19.3mm
17.3mm
16.9mm
16.9mm
16.9mm
Standover Height
692mm
718mm
735mm
758mm
777mm
Tire to Pedal Spindle
71.3mm
170 mm cranks
75.2mm
170 mm cranks
77.2mm
170 mm cranks
83.2mm
170 mm cranks
91.8mm
170 mm cranks
Pedal Spindle to Ground Clearance
92mm
170 mm cranks
92mm
170 mm cranks
92mm
170 mm cranks
92mm
170 mm cranks
93mm
170 mm cranks

Base Build

44
48
51
54
56
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
24mm
24mm
24mm
24mm
24mm
Tire Outer Diameter
670mm
670mm
670mm
670mm
670mm
Bike Length with Tires
1640mm
1644mm
1646mm
1652mm
1664mm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
Triathlon
Source:https://www.specialized.com/us/en/shop/Bikes/Road-Bikes/Triathlon-Bikes/Amira/c/triathlonAmira