Bike-on-Bike

Generated by Bike Insights
700C/29 in × 38 mm
700C/29 in × 40 mm

Insights

Very upright stack and reach vs trend of hybrid bikes
Design deviates from other sizes of Specialized Bicycles Sirrus
Average stack and reach vs trend of fitness bikes

Geometry

Stack
651mm
597mm
-54mm
Reach
386mm
407mm
+21mm
Stack to Reach Ratio
1.69:1
1.47:1
Seat Tube Length, Unknown
510mm
495mm
-15mm
Top Tube Length, Effective/Horizontal Unknown
590mm
Top Tube Length, Unknown
581mm
Top Tube Slope
17deg
12.6deg
-4.4deg
Head Tube Angle
71deg
71deg
+0deg
Seat Tube Angle
73.5deg
73deg
-0.5deg
Effective Seat Tube Angle, Unknown
73.5deg
Head Tube Length
186mm
175mm
-11mm
Bottom Bracket Drop
70mm
75mm
+5mm
Bottom Bracket Height
279mm
276mm
-3mm
Chainstay Length
440mm
435mm
-5mm
Chainstay Length Horizontal
434.4mm
428.5mm
-5.9mm
Front-Center
644mm
644.9mm
+0.9mm
Front-Center Horizontal
639.6mm
640.5mm
+0.9mm
Wheelbase
1074mm
1069mm
-5mm
Fork Offset/Rake
51mm
50mm
-1mm
Fork Length (Axle-To-Crown)
395mm
Trail
66.2mm
high
68mm
+1.8mm
high
Mechanical Trail
62.6mm
64.3mm
+1.7mm
Wheel Flop
20.4mm
20.9mm
+0.5mm
Standover Height
831mm
773mm
-58mm
Tire to Pedal Spindle
120mm
175 mm cranks
121.4mm
+1.4mm
172.5 mm cranks
Pedal Spindle to Ground Clearance
104mm
175 mm cranks
103.5mm
-0.5mm
172.5 mm cranks

Build

Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
38mm
40mm
+2mm
Tire Outer Diameter
698mm
702mm
+4mm
Bike Length with Tires
1772mm
1771mm
-1mm
Crank Length
175mm
172.5mm
-2.5mm
Handlebar Width
680mm
680mm
+0mm
Stem Length
90mm
90mm
+0mm
Stem Angle
0deg
Suspension Type
Rigid, non-suspension corrected
Rigid, non-suspension corrected
Bar Type
Flat Bar
Flat Bar
Frame Material
Aluminum
Aluminum
Fork Material
Unknown
Carbon/Composite
Brake Type
Disc
Disc

Meta

Actions
Source
https://www.specialized.com/us/en/sirrus-x-40/p/200213?color=322036-200213
https://www.giant-bicycles.com/us/fastroad-ar-2-2025
Brand
Bike
Size
Category