Compare: 2026 SPect MIRA Base 51 vs 2021 DENGFU FM098 Disc 52cm

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

Somewhat aggressive stack and reach vs trend of performance road bikes

Design deviates from other sizes of DENGFU FM098

Stack	519mm	525mm +6mm
Reach	376mm	384mm +8mm
Stack to Reach Ratio	1.38:1	1.37:1
Seat Tube Length, C-T	—	460mm
Top Tube Length, Effective/Horizontal Center	—	537.5mm
Top Tube Length, Effective/Horizontal Unknown	535mm	—
Top Tube Slope	—	9.2deg
Head Tube Angle	72deg	73deg +1deg
Seat Tube Angle	73deg	73.7deg +0.7deg
Head Tube Length	82mm	120mm +38mm
Bottom Bracket Drop	74.5mm	70mm -4.5mm
Bottom Bracket Height	266.5mm	273mm +6.5mm
Chainstay Length	405mm	405mm +0mm
Chainstay Length Horizontal	398.1mm	398.9mm +0.8mm
Front-Center	580mm	572.3mm -7.7mm
Front-Center Horizontal	575.9mm	568.1mm -7.8mm
Wheelbase	974mm	967mm -7mm
Fork Offset/Rake	52.5mm	43mm -9.5mm
Fork Length, Unknown	—	368mm
Trail	55.6mm mid/neutral	59.9mm +4.3mm mid/neutral
Mechanical Trail	52.9mm	57.3mm +4.4mm
Wheel Flop	16.3mm	16.7mm +0.4mm
Standover Height	734mm	—
Tire to Pedal Spindle	69mm 170 mm cranks	59.3mm -9.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	96.5mm 170 mm cranks	103mm +6.5mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	30mm	32mm +2mm
Tire Width Max	—	32mm
Tire Outer Diameter	682mm	686mm +4mm
Bike Length with Tires	1656mm	1653mm -3mm
Handlebar Width	—	400mm
Stem Length	—	90mm
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	Disc