2026 Diamant 140 Base

	M	L	XL	XXL
Stack	575mm	598mm	626mm	626mm
Reach	385mm	393mm	407mm	420mm
Stack to Reach Ratio	1.49:1	1.52:1	1.54:1	1.49:1
Seat Tube Length, C-T	500mm	540mm	580mm	620mm
Top Tube Length, Effective/Horizontal HT Top	582mm	597mm	620mm	633mm
Top Tube Slope	10.3deg	8.4deg	7.1deg	3.2deg
Head Tube Angle	69deg	69deg	69deg	69deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	145mm	170mm	200mm	200mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm
Bottom Bracket Height	283mm	283mm	283mm	283mm
Chainstay Length	468mm	468mm	468mm	468mm
Chainstay Length Horizontal	462.7mm	462.7mm	462.7mm	462.7mm
Front-Center	658mm	674.9mm	698.8mm	711.7mm
Front-Center Horizontal	654.3mm	671.3mm	695.3mm	708.3mm
Wheelbase	1117mm	1134mm	1158mm	1171mm
Fork Offset/Rake	46mm	46mm	46mm	46mm
Fork Length (Axle-To-Crown)	477mm	477mm	477mm	477mm
Trail	86.2mm very high	86.2mm very high	86.2mm very high	86.2mm very high
Mechanical Trail	80.5mm	80.5mm	80.5mm	80.5mm
Wheel Flop	28.8mm	28.8mm	28.8mm	28.8mm
Tire to Pedal Spindle	135mm 170 mm cranks	151.9mm 170 mm cranks	175.8mm 170 mm cranks	188.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Category Trend

Source:https://www.diamantrad.com/de-DE/bike/140-stepover/

Geometry