Compare: 2023 Airwolf gravel yfr045 49 vs 2026 TanTan Cycling (Seraph) GR257 Base 510

Insights

Average stack and reach vs trend of all-road/gravel bikes

Design deviates from other sizes of Airwolf gravel

Somewhat upright stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of TanTan Cycling (Seraph) GR257

Stack	537mm	540mm +3mm
Reach	371mm	369mm -2mm
Stack to Reach Ratio	1.45:1	1.46:1
Seat Tube Length, C-TTT	—	488mm
Seat Tube Length, Unknown	490mm	—
Top Tube Length, Effective/Horizontal Center	—	521mm
Top Tube Slope	7.4deg	5.7deg -1.7deg
Head Tube Angle	70.5deg	71deg +0.5deg
Seat Tube Angle	74.5deg	74.3deg -0.2deg
Head Tube Length	120mm	108mm -12mm
Bottom Bracket Drop	67mm	72mm +5mm
Bottom Bracket Height	279mm	289mm +10mm
Chainstay Length	435mm	435mm +0mm
Chainstay Length Horizontal	429.8mm	429mm -0.8mm
Front-Center	594mm	593.4mm -0.6mm
Front-Center Horizontal	590.2mm	589mm -1.2mm
Wheelbase	1020mm	1018mm -2mm
Fork Offset/Rake	50mm	55mm +5mm
Fork Length, Unknown	—	405mm
Trail	69.5mm high	66.1mm -3.4mm high
Mechanical Trail	65.5mm	62.5mm -3mm
Wheel Flop	21.9mm	20.4mm -1.5mm
Tire to Pedal Spindle	75.5mm 172.5 mm cranks	62.4mm -13.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	106.5mm 172.5 mm cranks	119mm +12.5mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	35mm	50mm +15mm
Tire Width Max	45mm	57mm +12mm
Tire Outer Diameter	692mm	722mm +30mm
Bike Length with Tires	1712mm	1740mm +28mm
Crank Length	172.5mm	—
Handlebar Width	400mm	—
Stem Length	80mm	—
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc