2022 Bearclaw Bicycle Co. Thunderhawk 650b Road+

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Titanium
Fork
Carbon/Composite
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Very aggressive stack and reachvs category

Geometry

48
51
52.5
54
55.5
57
58.5
60
62
Stack
549.3mm
558mm
569.4mm
578.8mm
588.3mm
597.7mm
607.1mm
616.6mm
635.5mm
Reach
367.5mm
374.7mm
375.9mm
383mm
390.1mm
397.3mm
404.9mm
411.5mm
433.7mm
Stack to Reach Ratio
1.49:1
1.49:1
1.51:1
1.51:1
1.51:1
1.5:1
1.5:1
1.5:1
1.47:1
Seat Tube Length, Unknown
480mm
510mm
525mm
540mm
555mm
570mm
585mm
600mm
620mm
Top Tube Length, Effective/Horizontal Unknown
525mm
540mm
550mm
560mm
570mm
580mm
590mm
600mm
628mm
Top Tube Slope
10deg
7.6deg
7.3deg
6.6deg
6deg
5.3deg
4.7deg
4.2deg
4deg
Head Tube Angle
69.5deg
70.5deg
71deg
71deg
71deg
71deg
71deg
71deg
71deg
Seat Tube Angle
74deg
73.5deg
73deg
73deg
73deg
73deg
73deg
73deg
73deg
Head Tube Length
125mm
130mm
140mm
150mm
160mm
170mm
180mm
190mm
210mm
Bottom Bracket Drop
70mm
70mm
70mm
70mm
70mm
70mm
70mm
70mm
70mm
Bottom Bracket Height
275.3mm
275.3mm
275.3mm
275.3mm
275.3mm
275.3mm
275.3mm
275.3mm
275.3mm
Chainstay Length
430mm
430mm
430mm
430mm
430mm
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
424.3mm
424.3mm
424.3mm
424.3mm
424.3mm
424.3mm
424.3mm
424.3mm
424.3mm
Front-Center
603.6mm
603.6mm
603.8mm
614mm
624.4mm
635.4mm
645.6mm
655.4mm
672.9mm
Front-Center Horizontal
599.5mm
599.5mm
599.7mm
610mm
620.4mm
631.5mm
641.8mm
651.6mm
669.2mm
Wheelbase
1023.8mm
1023.8mm
1024mm
1034.3mm
1044.7mm
1055.8mm
1066.1mm
1075.9mm
1093.5mm
Fork Offset/Rake
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
49mm
Fork Length (Axle-To-Crown)
405mm
405mm
405mm
405mm
405mm
405mm
405mm
405mm
405mm
Trail
76.8mm
high
70.3mm
high
67.1mm
high
67.1mm
high
67.1mm
high
67.1mm
high
67.1mm
high
67.1mm
high
67.1mm
high
Mechanical Trail
71.9mm
66.3mm
63.4mm
63.4mm
63.4mm
63.4mm
63.4mm
63.4mm
63.4mm
Wheel Flop
25.2mm
22.1mm
20.7mm
20.7mm
20.7mm
20.7mm
20.7mm
20.7mm
20.7mm
Tire to Pedal Spindle
88.3mm
170 mm cranks
88.3mm
170 mm cranks
86mm
172.5 mm cranks
96.2mm
172.5 mm cranks
106.5mm
172.5 mm cranks
115.1mm
175 mm cranks
125.3mm
175 mm cranks
135mm
175 mm cranks
152.6mm
175 mm cranks
Pedal Spindle to Ground Clearance
105.3mm
170 mm cranks
105.3mm
170 mm cranks
102.8mm
172.5 mm cranks
102.8mm
172.5 mm cranks
102.8mm
172.5 mm cranks
100.3mm
175 mm cranks
100.3mm
175 mm cranks
100.3mm
175 mm cranks
100.3mm
175 mm cranks

650b Road+ Build

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
1714.5mm
1714.5mm
1714.7mm
1725mm
1735.4mm
1746.5mm
1756.8mm
1766.6mm
1784.2mm
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
100mm
100mm
110mm
110mm
120mm
Stem Angle
10deg
10deg
10deg
10deg
10deg
10deg
10deg
10deg
10deg

Published Sizing Recommendations

Height
4 ft 11 in
to
5 ft 3 in
5 ft 3 in
to
5 ft 6 in
5 ft 5 in
to
5 ft 8 in
5 ft 7 in
to
5 ft 10 in
5 ft 9 in
to
6 ft 0 in
5 ft 11 in
to
6 ft 2 in
6 ft 1 in
to
6 ft 4 in
6 ft 3 in
to
6 ft 6 in
6 ft 5 in
to
6 ft 8 in

Stack and Reach vs. Category Trend

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/