Compare: 2020 OPEN Cycle U.P.P.E.R. Base L vs 2025 Incolor SSR Base 58-XL

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.

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Incolor SSR

Stack	580mm	583mm +3mm
Reach	387mm	397mm +10mm
Stack to Reach Ratio	1.5:1	1.47:1
Seat Tube Length, C-T	560mm	—
Top Tube Length, Effective/Horizontal Center	—	571mm
Top Tube Length, Effective/Horizontal HT Top	570mm	—
Top Tube Slope	4.7deg	—
Head Tube Angle	72.5deg	72.25deg -0.25deg
Seat Tube Angle	72.5deg	73.5deg +1deg
Head Tube Length	155mm	184.5mm +29.5mm
Bottom Bracket Drop	70mm	72mm +2mm
Bottom Bracket Height	275.3mm	269mm -6.3mm
Chainstay Length	420mm	405mm -15mm
Chainstay Length Horizontal	414.1mm	398.6mm -15.5mm
Front-Center	604mm	615mm +11mm
Front-Center Horizontal	599.9mm	611.5mm +11.6mm
Wheelbase	1014mm	1010mm -4mm
Fork Offset/Rake	50mm	50mm +0mm
Fork Length (On-Axis)	—	367mm
Trail	56.5mm mid/neutral	56.7mm +0.2mm mid/neutral
Mechanical Trail	53.9mm	54mm +0.1mm
Wheel Flop	16.2mm	16.5mm +0.3mm
Standover Height	791mm	799mm +8mm
Tire to Pedal Spindle	88.7mm 170 mm cranks	104mm +15.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	105.3mm 170 mm cranks	99mm -6.3mm 170 mm cranks

Wheel Size	650B/27.5 in 584 mm BSD	700C/29 in 622 mm BSD
Tire Width	2.1in	30mm -23.3mm
Tire Outer Diameter	690.7mm	682mm -8.7mm
Bike Length with Tires	1704.7mm	1692mm -12.7mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Unknown
Fork Material	Carbon/Composite	Unknown
Brake Type	Disc	Unknown

Actions	Collection I've Ridden	Collection I've Ridden
Source	https://opencycle.com/UP	https://underdogscycling.cc/product/incolor-ssr-frameset/
Brand	OPEN Cycle	Incolor
Bike	2020 U.P.P.E.R. Base	2025 SSR Base
Size	L	58-XL
Category	All-road/Gravel	Performance Road