Compare: 2023 Seaboard GR02 Base 59 vs 2026 OPEN Cycle U.P. 2.0 XL

Insights

Somewhat aggressive 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	611.8mm	620mm +8.2mm
Reach	404.5mm	404mm -0.5mm
Stack to Reach Ratio	1.51:1	1.53:1
Seat Tube Length, C-T	—	518mm
Seat Tube Length, Unknown	590mm	—
Top Tube Length, Effective/Horizontal HT Top	—	584mm
Top Tube Length, Effective/Horizontal Unknown	580mm	—
Top Tube Slope	4.5deg	12.6deg +8.1deg
Head Tube Angle	72deg	72.5deg +0.5deg
Seat Tube Angle	74deg	73.5deg -0.5deg
Head Tube Length	19mm	—
Bottom Bracket Drop	70mm	72mm +2mm
Bottom Bracket Height	278mm	284mm +6mm
Chainstay Length	425mm	425mm +0mm
Chainstay Length Horizontal	419.2mm	418.9mm -0.3mm
Front-Center	637.1mm	634mm -3.1mm
Front-Center Horizontal	633.2mm	630.1mm -3.1mm
Wheelbase	1052.4mm	1049mm -3.4mm
Fork Offset/Rake	50.1mm	50mm -0.1mm
Trail	60.4mm mid/neutral	59.8mm -0.6mm mid/neutral
Mechanical Trail	57.5mm	57.1mm -0.4mm
Wheel Flop	17.8mm	17.2mm -0.6mm
Standover Height	—	815mm
Tire to Pedal Spindle	119.1mm 170 mm cranks	108mm -11.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	108mm 170 mm cranks	114mm +6mm 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	1748.4mm	1761mm +12.6mm
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	59	XL
Category	All-road/Gravel	All-road/Gravel