Compare: 2020 OPEN Cycle U.P.P.E.R. Base XL vs 2025 Incolor SSR Base 60-XXL

Insights

Somewhat aggressive 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	604mm	598mm -6mm
Reach	401mm	404mm +3mm
Stack to Reach Ratio	1.51:1	1.48:1
Seat Tube Length, C-T	580mm	—
Top Tube Length, Effective/Horizontal Center	—	589mm
Top Tube Length, Effective/Horizontal HT Top	591mm	—
Top Tube Slope	5.1deg	—
Head Tube Angle	72.5deg	72.5deg +0deg
Seat Tube Angle	72.5deg	73deg +0.5deg
Head Tube Length	180mm	199mm +19mm
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	622mm	626mm +4mm
Front-Center Horizontal	617.9mm	622.1mm +4.2mm
Wheelbase	1032mm	1020.6mm -11.4mm
Fork Offset/Rake	50mm	50mm +0mm
Fork Length (On-Axis)	—	367mm
Trail	56.5mm mid/neutral	55.1mm -1.4mm mid/neutral
Mechanical Trail	53.9mm	52.5mm -1.4mm
Wheel Flop	16.2mm	15.8mm -0.4mm
Standover Height	815mm	829mm +14mm
Tire to Pedal Spindle	106.7mm 170 mm cranks	115mm +8.3mm 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	1722.7mm	1702.6mm -20.1mm
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	XL	60-XXL
Category	All-road/Gravel	Performance Road