2019 Bearclaw Bicycle Co. Thunderhawk 650b Road+

	48	51	52.5	54	55.5	57	58.5	60	62
Stack	550.6mm	559.2mm	570.6mm	580mm	591.4mm	600.9mm	610.4mm	619.9mm	640.9mm
Reach	367.3mm	374.7mm	381.4mm	383.2mm	387.6mm	391.3mm	396.6mm	399.5mm	414.7mm
Stack to Reach Ratio	1.5:1	1.49:1	1.5:1	1.51:1	1.53:1	1.54:1	1.54:1	1.55:1	1.55:1
Seat Tube Length, Unknown	480mm	510mm	525mm	540mm	555mm	570mm	585mm	600mm	620mm
Top Tube Length, Effective/Horizontal Unknown	520mm	535mm	545mm	555mm	565mm	575mm	585mm	595mm	623mm
Top Tube Slope	10.1deg	7.7deg	7.2deg	6.7deg	6.3deg	5.8deg	5.3deg	4.8deg	4.8deg
Head Tube Angle	69.5deg	70.5deg	71deg	71deg	71.5deg	71.5deg	71.5deg	71.5deg	72.5deg
Seat Tube Angle	74deg	73.5deg	73.5deg	73deg	72.8deg	72.5deg	72.3deg	72deg	72deg
Head Tube Length	125mm	130mm	140mm	150mm	160mm	170mm	180mm	190mm	210mm
Bottom Bracket Drop	68mm	68mm	68mm	68mm	68mm	68mm	68mm	68mm	68mm
Bottom Bracket Height	277.3mm	277.3mm	277.3mm	277.3mm	277.3mm	277.3mm	277.3mm	277.3mm	277.3mm
Chainstay Length	428mm	428mm	428mm	428mm	428mm	428mm	428mm	428mm	428mm
Chainstay Length Horizontal	422.6mm	422.6mm	422.6mm	422.6mm	422.6mm	422.6mm	422.6mm	422.6mm	422.6mm
Front-Center	598.8mm	599.8mm	605.3mm	610.2mm	613.7mm	620.7mm	628.1mm	635.1mm	646.3mm
Front-Center Horizontal	594.9mm	595.9mm	601.4mm	606.4mm	609.9mm	616.9mm	624.4mm	631.4mm	642.7mm
Wheelbase	1017.5mm	1018.5mm	1024mm	1029mm	1032.5mm	1039.5mm	1047mm	1054mm	1065.3mm
Fork Offset/Rake	47mm	47mm	47mm	47mm	47mm	47mm	47mm	47mm	47mm
Fork Length, Unknown	405mm	405mm	405mm	405mm	405mm	405mm	405mm	405mm	405mm
Trail	78.9mm high	72.4mm high	69.2mm high	69.2mm high	66mm high	66mm high	66mm high	66mm high	59.6mm mid/neutral
Mechanical Trail	73.9mm	68.3mm	65.4mm	65.4mm	62.6mm	62.6mm	62.6mm	62.6mm	56.9mm
Wheel Flop	25.9mm	22.8mm	21.3mm	21.3mm	19.9mm	19.9mm	19.9mm	19.9mm	17.1mm
Tire to Pedal Spindle	83.5mm 170 mm cranks	84.5mm 170 mm cranks	87.4mm 172.5 mm cranks	92.4mm 172.5 mm cranks	95.9mm 172.5 mm cranks	100.3mm 175 mm cranks	107.8mm 175 mm cranks	114.8mm 175 mm cranks	126mm 175 mm cranks
Pedal Spindle to Ground Clearance	107.3mm 170 mm cranks	107.3mm 170 mm cranks	104.8mm 172.5 mm cranks	104.8mm 172.5 mm cranks	104.8mm 172.5 mm cranks	102.3mm 175 mm cranks	102.3mm 175 mm cranks	102.3mm 175 mm cranks	102.3mm 175 mm cranks

	48	51	52.5	54	55.5	57	58.5	60	62
Wheel Size	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD
Tire Width	2.1in	2.1in	2.1in	2.1in	2.1in	2.1in	2.1in	2.1in	2.1in
Tire Width Max	2.35in	2.35in	2.35in	2.35in	2.35in	2.35in	2.35in	2.35in	2.35in
Tire Outer Diameter	690.7mm	690.7mm	690.7mm	690.7mm	690.7mm	690.7mm	690.7mm	690.7mm	690.7mm
Bike Length with Tires	1708.2mm	1709.2mm	1714.7mm	1719.7mm	1723.2mm	1730.2mm	1737.7mm	1744.7mm	1756mm
Crank Length	170mm	170mm	172.5mm	172.5mm	172.5mm	175mm	175mm	175mm	175mm
Handlebar Width	40cm	40cm	42cm	42cm	42cm	44cm	44cm	46cm	46cm
Stem Length	70mm	80mm	80mm	90mm	90mm	100mm	100mm	110mm	120mm
Stem Angle	10deg	10deg	10deg	10deg	10deg	10deg	10deg	10deg	10deg

Published Sizing Recommendations

Height

4 ft 11 in

5 ft 3 in

5 ft 6 in

5 ft 5 in

5 ft 8 in

5 ft 7 in

5 ft 10 in

5 ft 9 in

6 ft 0 in

5 ft 11 in

6 ft 2 in

6 ft 1 in

6 ft 4 in

6 ft 3 in

6 ft 6 in

6 ft 5 in

6 ft 8 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.

Learn more about the Upright/Aggressive Scale

Category Trend

All-road/Gravel

Source:https://bearclawbicycleco.com/thunderhawk-titanium-650b-gravel-bike/

Suggest Bike Edit

2019 Bearclaw Bicycle Co. Thunderhawk 650b Road+

Geometry

650b Road+ Build

Published Sizing Recommendations

Stack and Reach vs. Category Trend