Compare: 2023 Airwolf gravel yfr045 49 vs 2026 TanTan Cycling (Seraph) GR257 Base 480

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	520mm -17mm
Reach	371mm	363mm -8mm
Stack to Reach Ratio	1.45:1	1.43:1
Seat Tube Length, C-TTT	—	449mm
Seat Tube Length, Unknown	490mm	—
Top Tube Length, Effective/Horizontal Center	—	510mm
Top Tube Slope	7.4deg	8deg +0.6deg
Head Tube Angle	70.5deg	70deg -0.5deg
Seat Tube Angle	74.5deg	74.3deg -0.2deg
Head Tube Length	120mm	86mm -34mm
Bottom Bracket Drop	67mm	77mm +10mm
Bottom Bracket Height	279mm	284mm +5mm
Chainstay Length	435mm	435mm +0mm
Chainstay Length Horizontal	429.8mm	428.1mm -1.7mm
Front-Center	594mm	587.9mm -6.1mm
Front-Center Horizontal	590.2mm	582.9mm -7.3mm
Wheelbase	1020mm	1011mm -9mm
Fork Offset/Rake	50mm	55mm +5mm
Fork Length, Unknown	—	405mm
Trail	69.5mm high	72.9mm +3.4mm high
Mechanical Trail	65.5mm	68.5mm +3mm
Wheel Flop	21.9mm	23.4mm +1.5mm
Tire to Pedal Spindle	75.5mm 172.5 mm cranks	56.9mm -18.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	106.5mm 172.5 mm cranks	114mm +7.5mm 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	1733mm +21mm
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