Compare: 2020 OPEN Cycle U.P.P.E.R. Base S vs 2023 Airwolf YFR066 Base XS - 49

Insights

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

Design deviates from other sizes of OPEN Cycle U.P.P.E.R.

Somewhat aggressive stack and reach vs trend of endurance road bikes

Design deviates from other sizes of Airwolf YFR066

Stack	522mm	526mm +4mm
Reach	365mm	383mm +18mm
Stack to Reach Ratio	1.43:1	1.37:1
Seat Tube Length, C-T	520mm	—
Seat Tube Length, Unknown	—	470mm
Top Tube Length, Effective/Horizontal HT Top	528mm	—
Top Tube Slope	2.9deg	8.1deg +5.2deg
Head Tube Angle	69.5deg	71deg +1.5deg
Seat Tube Angle	72.5deg	75deg +2.5deg
Head Tube Length	105mm	105mm +0mm
Bottom Bracket Drop	70mm	70mm +0mm
Bottom Bracket Height	275.3mm	266mm -9.3mm
Chainstay Length	420mm	420mm +0mm
Chainstay Length Horizontal	414.1mm	414.1mm +0mm
Front-Center	592mm	593mm +1mm
Front-Center Horizontal	587.9mm	588.9mm +1mm
Wheelbase	1002mm	1003mm +1mm
Fork Offset/Rake	50mm	45mm -5mm
Trail	75.7mm high	68.1mm -7.6mm high
Mechanical Trail	70.9mm	64.4mm -6.5mm
Wheel Flop	24.8mm	21mm -3.8mm
Standover Height	743mm	—
Tire to Pedal Spindle	76.7mm 170 mm cranks	87mm +10.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	105.3mm 170 mm cranks	96mm -9.3mm 170 mm cranks

Wheel Size	650B/27.5 in 584 mm BSD	700C/29 in 622 mm BSD
Tire Width	2.1in	25mm -28.3mm
Tire Outer Diameter	690.7mm	672mm -18.7mm
Bike Length with Tires	1692.7mm	1675mm -17.7mm
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

Actions	Collection I've Ridden	Collection I've Ridden
Source	https://opencycle.com/UP	https://www.aliexpress.com/item/1005004256426343.html?spm=a2g0o.store_pc_home.promoteWysiwyg_503471845.1005004256426343
Brand	OPEN Cycle	Airwolf
Bike	2020 U.P.P.E.R. Base	2023 YFR066 Base
Size	S	XS - 49
Category	All-road/Gravel	Endurance Road