2022 Starling Cycles Roost Base

	MEDIUM	LARGE	EXTRA LARGE
Stack	660mm	660mm	669mm
Reach	440mm	475mm	505mm
Stack to Reach Ratio	1.5:1	1.39:1	1.32:1
Seat Tube Length, C-T	410mm	440mm	480mm
Top Tube Length, Effective/Horizontal Center	603mm	638mm	671mm
Top Tube Slope	25.9deg	21.8deg	18.1deg
Head Tube Angle	64deg	64deg	64deg
Seat Tube Angle	76deg	76deg	76deg
Head Tube Length	120mm	120mm	130mm
Bottom Bracket Drop	50mm	50mm	50mm
Bottom Bracket Height	327mm	327mm	327mm
Chainstay Length	425mm	430mm	435mm
Chainstay Length Horizontal	422.1mm	427.1mm	432.1mm
Front-Center	781.6mm	816.5mm	851.4mm
Front-Center Horizontal	780mm	814.9mm	849.9mm
Wheelbase	1202mm	1242mm	1282mm
Fork Offset/Rake	46mm	46mm	46mm
Fork Length (On-Axis)	553mm	553mm	553mm
Trail	132.7mm very high	132.7mm very high	132.7mm very high
Mechanical Trail	119.3mm	119.3mm	119.3mm
Wheel Flop	52.3mm	52.3mm	52.3mm
Tire to Pedal Spindle	234.5mm 170 mm cranks	269.4mm 170 mm cranks	304.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	157mm 170 mm cranks	157mm 170 mm cranks	157mm 170 mm cranks

Published Sizing Recommendations

Height

5 ft 6 in

5 ft 10 in

5 ft 9 in

6 ft 1 in

6 ft 0 in

6 ft 4 in

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.starlingcycles.com/bikes/roost-hardtail/