2025 Rennstahl Stahl Bikes 853 Gravel

	S	M	L	XL	XXL
Stack	555mm	575mm	590mm	610mm	649mm
Reach	378mm	389mm	393mm	407mm	429mm
Stack to Reach Ratio	1.47:1	1.48:1	1.5:1	1.5:1	1.51:1
Seat Tube Length, C-T	470mm	530mm	550mm	580mm	610mm
Top Tube Length, Effective/Horizontal HT Top	530mm	550mm	565mm	585mm	625mm
Top Tube Slope	11.5deg	7.1deg	6.6deg	5.5deg	6.2deg
Head Tube Angle	72.5deg	72deg	72.5deg	73deg	73deg
Seat Tube Angle	74deg	73.25deg	73.25deg	73deg	73deg
Head Tube Length	140mm	150mm	165mm	185mm	230mm
Bottom Bracket Drop	72mm	71mm	70mm	69mm	69mm
Bottom Bracket Height	284mm	285mm	286mm	287mm	287mm
Chainstay Length	425mm	425mm	425mm	427mm	430mm
Chainstay Length Horizontal	418.9mm	419mm	419.2mm	421.4mm	424.4mm
Front-Center	590.6mm	606.2mm	610.8mm	624.4mm	668.1mm
Front-Center Horizontal	586.1mm	602mm	606.8mm	620.6mm	664.6mm
Wheelbase	1005mm	1021mm	1026mm	1042mm	1089mm
Fork Offset/Rake	53.3mm	46.8mm	47.5mm	46.1mm	55.7mm
Trail	56.4mm mid/neutral	66.5mm high	62.4mm mid/neutral	60.6mm mid/neutral	50.6mm mid/neutral
Mechanical Trail	53.8mm	63.2mm	59.5mm	58mm	48.4mm
Wheel Flop	16.2mm	19.5mm	17.9mm	17mm	14.2mm
Tire to Pedal Spindle	64.6mm 170 mm cranks	80.2mm 170 mm cranks	84.8mm 170 mm cranks	98.4mm 170 mm cranks	142.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	114mm 170 mm cranks	115mm 170 mm cranks	116mm 170 mm cranks	117mm 170 mm cranks	117mm 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://geometrygeeks.bike/bike/rennstahl-853-gravel-2024/

Geometry