Compare: 2023 Seaboard GR02 Base 44 vs 2026 OPEN Cycle U.P. 2.0 S

Insights

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

Design deviates from other sizes of Seaboard GR02

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

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

Stack	536.8mm	545mm +8.2mm
Reach	362mm	368mm +6mm
Stack to Reach Ratio	1.48:1	1.48:1
Seat Tube Length, C-T	—	449mm
Seat Tube Length, Unknown	440mm	—
Top Tube Length, Effective/Horizontal HT Top	—	525mm
Top Tube Length, Effective/Horizontal Unknown	511mm	—
Top Tube Slope	13.2deg	13deg -0.2deg
Head Tube Angle	71deg	71.5deg +0.5deg
Seat Tube Angle	74.5deg	73.5deg -1deg
Head Tube Length	115mm	—
Bottom Bracket Drop	70mm	77mm +7mm
Bottom Bracket Height	278mm	279mm +1mm
Chainstay Length	425mm	425mm +0mm
Chainstay Length Horizontal	419.2mm	418mm -1.2mm
Front-Center	579.9mm	590mm +10.1mm
Front-Center Horizontal	575.6mm	585mm +9.4mm
Wheelbase	994.8mm	1003mm +8.2mm
Fork Offset/Rake	50mm	50mm +0mm
Trail	67mm high	66.4mm -0.6mm high
Mechanical Trail	63.3mm	63mm -0.3mm
Wheel Flop	20.6mm	20mm -0.6mm
Standover Height	—	745mm
Tire to Pedal Spindle	61.9mm 170 mm cranks	64mm +2.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	108mm 170 mm cranks	109mm +1mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	37mm	45mm +8mm
Tire Outer Diameter	696mm	712mm +16mm
Bike Length with Tires	1690.8mm	1715mm +24.2mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Aluminum	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	https://tsunamibicycle.com/product/seaboard-gr02-2022-gravel-bike-off-road-bike-touring-bike/	https://opencycle.com/upper-20
Brand	Seaboard	OPEN Cycle
Bike	2023 GR02 Base	2026 U.P. 2.0
Size	44	S
Category	All-road/Gravel	All-road/Gravel