Compare: 2026 SPect MIRA Base 56 vs 2018 DENGFU R01 Ultralight 58cm

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of SPect MIRA

Bar type unusual for category

This: Aero Bar
Category: Drop Bar

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of DENGFU R01

Stack	565mm	579mm +14mm
Reach	392mm	398mm +6mm
Stack to Reach Ratio	1.44:1	1.45:1
Seat Tube Length, C-T	—	565mm
Seat Tube Length, C-C	—	520mm
Top Tube Length, Effective/Horizontal Center	—	575mm
Top Tube Length, Actual C-C	565mm	—
Top Tube Slope	—	3.9deg
Head Tube Angle	73.5deg	73.5deg +0deg
Seat Tube Angle	73deg	73deg +0deg
Head Tube Length	125mm	175mm +50mm
Bottom Bracket Drop	72mm	69mm -3mm
Bottom Bracket Height	269mm	267mm -2mm
Chainstay Length	405mm	405mm +0mm
Chainstay Length Horizontal	398.6mm	399.1mm +0.5mm
Front-Center	588mm	600mm +12mm
Front-Center Horizontal	583.5mm	595.9mm +12.4mm
Wheelbase	982mm	995mm +13mm
Fork Offset/Rake	43.5mm	44.9mm +1.4mm
Fork Length (Axle-To-Crown)	—	370mm
Trail	55.6mm mid/neutral	52.7mm -2.9mm mid/neutral
Mechanical Trail	53.4mm	50.5mm -2.9mm
Wheel Flop	15.2mm	14.3mm -0.9mm
Standover Height	781mm	—
Tire to Pedal Spindle	77mm 170 mm cranks	94mm +17mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	97mm -2mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	30mm	25mm -5mm
Tire Width Max	—	25mm
Tire Outer Diameter	682mm	672mm -10mm
Bike Length with Tires	1664mm	1667mm +3mm
Handlebar Width	—	440mm
Stem Length	—	110mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Aero Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Rim