Compare: 2023 BMC Switzerland Kaius 01 One 51 vs 2026 evolve CIMA GR Base M

Insights

Somewhat aggressive stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of BMC Switzerland Kaius

Somewhat upright stack and reach vs trend of progressive gravel bikes

Stack	530mm	556mm +26mm
Reach	397mm	384mm -13mm
Stack to Reach Ratio	1.34:1	1.45:1
Seat Tube Length, C-T	452mm	—
Seat Tube Length, C-TTT	—	480mm
Top Tube Length, Effective/Horizontal Center	559mm	—
Top Tube Length, Effective/Horizontal Unknown	—	543mm
Top Tube Slope	10.5deg	8.2deg -2.3deg
Head Tube Angle	71deg	71deg +0deg
Seat Tube Angle	73deg	74deg +1deg
Head Tube Length	106mm	126mm +20mm
Bottom Bracket Drop	80mm	80mm +0mm
Bottom Bracket Height	271mm	281mm +10mm
Chainstay Length	—	425mm
Chainstay Length Horizontal	420mm	417.4mm -2.6mm
Front-Center	610mm	610mm +0mm
Front-Center Horizontal	597mm	604.6mm +7.6mm
Wheelbase	1017mm	1022mm +5mm
Fork Offset/Rake	50mm	54mm +4mm
Fork Length (Axle-To-Crown)	387mm	395mm +8mm
Trail	68mm high	67.2mm -0.8mm high
Mechanical Trail	64.3mm	63.5mm -0.8mm
Wheel Flop	20.9mm	20.7mm -0.2mm
Standover Height	722mm	782mm +60mm
Tire to Pedal Spindle	89mm 170 mm cranks	79mm -10mm 170 mm cranks
Pedal Spindle to Ground Clearance	101mm 170 mm cranks	111mm +10mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	40mm	50mm +10mm
Tire Width Max	44mm	—
Tire Outer Diameter	702mm	722mm +20mm
Bike Length with Tires	1719mm	1744mm +25mm
Crank Length	170mm	—
Stem Length	90mm	—
Stem Angle	-12.5deg	—
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