2021 Riverside 900 Base

	S	M	L	XL
Stack	574mm	602mm	623mm	642mm
Reach	410mm	411mm	414mm	423mm
Stack to Reach Ratio	1.4:1	1.46:1	1.5:1	1.52:1
Seat Tube Length, Unknown	410mm	475mm	500mm	520mm
Top Tube Length, Effective/Horizontal Unknown	585mm	595mm	605mm	620mm
Top Tube Slope	19deg	15deg	14.5deg	14.1deg
Head Tube Angle	71.5deg	71.5deg	72deg	72deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	120mm	150mm	170mm	190mm
Bottom Bracket Drop	54mm	54mm	54mm	54mm
Bottom Bracket Height	304mm	304mm	304mm	304mm
Chainstay Length	458mm	458mm	458mm	458mm
Chainstay Length Horizontal	454.8mm	454.8mm	454.8mm	454.8mm
Front-Center	633.5mm	643.5mm	648.5mm	664.4mm
Front-Center Horizontal	631.2mm	641.2mm	646.2mm	662.2mm
Wheelbase	1086mm	1096mm	1101mm	1117mm
Fork Offset/Rake	45mm	45mm	45mm	45mm
Trail	72.3mm high	72.3mm high	69mm high	69mm high
Mechanical Trail	68.6mm	68.6mm	65.6mm	65.6mm
Wheel Flop	21.8mm	21.8mm	20.3mm	20.3mm
Tire to Pedal Spindle	105.5mm 170 mm cranks	115.5mm 170 mm cranks	120.5mm 170 mm cranks	136.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	134mm 170 mm cranks	134mm 170 mm cranks	134mm 170 mm cranks	134mm 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:Decathlon Bikes

Geometry