Name: 2026 Rennstahl Stahl Bikes 853 PI Gravel
Brand: Rennstahl Stahl Bikes

	S	M	L	XL	XXL
Stack	555mm	580mm	599mm	610mm	649mm
Reach	380mm	389mm	393mm	407mm	429mm
Stack to Reach Ratio	1.46:1	1.49:1	1.52:1	1.5:1	1.51:1
Seat Tube Length, Unknown	460mm	530mm	545mm	565mm	610mm
Top Tube Length, Effective/Horizontal Unknown	545mm	550mm	565mm	585mm	625mm
Top Tube Slope	12.6deg	7.6deg	8deg	6.9deg	6.2deg
Head Tube Angle	72.5deg	72deg	72.5deg	73deg	73deg
Seat Tube Angle	74deg	73.5deg	73.25deg	73deg	73deg
Head Tube Length	140mm	160mm	175mm	185mm	230mm
Bottom Bracket Drop	72mm	71mm	70mm	69mm	65mm
Bottom Bracket Height	289mm	290mm	291mm	292mm	296mm
Chainstay Length	450mm	450mm	450mm	450mm	450mm
Chainstay Length Horizontal	444.2mm	444.4mm	444.5mm	444.7mm	445.3mm
Front-Center	587.2mm	592.9mm	600.6mm	612.2mm	647mm
Front-Center Horizontal	582.8mm	588.6mm	596.5mm	608.3mm	643.7mm
Wheelbase	1027mm	1033mm	1041mm	1053mm	1089mm
Fork Offset/Rake	48.2mm	32.6mm	35mm	34.4mm	34.6mm
Trail	63.3mm mid/neutral	83mm very high	77.1mm high	74.5mm high	74.2mm high
Mechanical Trail	60.4mm	79mm	73.6mm	71.2mm	71mm
Wheel Flop	18.2mm	24.4mm	22.1mm	20.8mm	20.8mm
Tire to Pedal Spindle	56.2mm 170 mm cranks	61.9mm 170 mm cranks	64.6mm 175 mm cranks	76.2mm 175 mm cranks	111mm 175 mm cranks
Pedal Spindle to Ground Clearance	119mm 170 mm cranks	120mm 170 mm cranks	116mm 175 mm cranks	117mm 175 mm cranks	121mm 175 mm cranks

Published Sizing Recommendations

Height

165 cm

171 cm

168 cm

179 cm

178 cm

186 cm

185 cm

201 cm

195 cm

205 cm

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.1bike4life.com/rennstahl/bikes/853-pi-gravel

2026 Rennstahl Stahl Bikes 853 PI Gravel