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Black Mountain Cycles
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Monster Cross Disc

2020 Black Mountain Cycles Monster Cross Disc 650b

Category
All-road/Gravel
Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Steel
Features
Disc brake
XS (44cm)
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S (47cm)
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M (50cm)
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L (53cm)
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XL (56cm)
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XXL (59cm)
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Somewhat upright stack and reachvs category
Very upright stack and reachvs category
Very upright stack and reachvs category
Very upright stack and reachvs category
Very upright stack and reachvs category
Somewhat upright stack and reachvs category

Geometry

XS (44cm)
S (47cm)
M (50cm)
L (53cm)
XL (56cm)
XXL (59cm)
Stack
568mm
589mm
608mm
629mm
648mm
667mm
Reach
365mm
364mm
368mm
382mm
390mm
404mm
Stack to Reach Ratio
1.56:1
1.62:1
1.65:1
1.65:1
1.66:1
1.65:1
Seat Tube Length, C-T
440mm
470mm
500mm
530mm
560mm
590mm
Top Tube Length, Effective/Horizontal Center
530mm
540mm
555mm
575mm
595mm
615mm
Top Tube Slope
16.6deg
15.5deg
14.2deg
12.8deg
11.5deg
10.2deg
Head Tube Angle
71deg
71.5deg
71.5deg
72deg
72deg
72deg
Seat Tube Angle
74deg
73.5deg
73deg
73deg
72.5deg
72.5deg
Head Tube Length
120mm
140mm
160mm
180mm
200mm
220mm
Bottom Bracket Drop
72mm
72mm
72mm
70mm
70mm
70mm
Bottom Bracket Height
267mm
267mm
267mm
269mm
269mm
269mm
Chainstay Length
438mm
438mm
438mm
438mm
438mm
438mm
Chainstay Length Max
438mm
438mm
438mm
438mm
438mm
438mm
Chainstay Length Horizontal
432mm
432mm
432mm
432.4mm
432.4mm
432.4mm
Chainstay Length Horizontal Max
432mm
432mm
432mm
432.4mm
432.4mm
432.4mm
Front-Center
599mm
599mm
610mm
620mm
635mm
655mm
Front-Center Horizontal
598mm
598mm
608mm
617.6mm
627.6mm
647.6mm
Wheelbase
1030mm
1030mm
1040mm
1050mm
1060mm
1080mm
Wheelbase Max
1030mm
1030mm
1040mm
1050mm
1060mm
1080mm
Fork Offset/Rake
55mm
55mm
55mm
50mm
50mm
50mm
Fork Length (On-Axis)
410mm
410mm
410mm
410mm
410mm
410mm
Trail
58.6mm
mid/​neutral
55.4mm
mid/​neutral
55.4mm
mid/​neutral
57.6mm
mid/​neutral
57.6mm
mid/​neutral
57.6mm
mid/​neutral
Mechanical Trail
55.4mm
52.6mm
52.6mm
54.8mm
54.8mm
54.8mm
Wheel Flop
18mm
16.7mm
16.7mm
16.9mm
16.9mm
16.9mm
Standover Height
756mm
778mm
802mm
828mm
851mm
875mm
Tire to Pedal Spindle
90mm
170 mm cranks
90mm
170 mm cranks
101mm
170 mm cranks
111mm
170 mm cranks
126mm
170 mm cranks
146mm
170 mm cranks
Pedal Spindle to Ground Clearance
97mm
170 mm cranks
97mm
170 mm cranks
97mm
170 mm cranks
99mm
170 mm cranks
99mm
170 mm cranks
99mm
170 mm cranks

650b Build

XS (44cm)
S (47cm)
M (50cm)
L (53cm)
XL (56cm)
XXL (59cm)
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
Tire Width
47mm
47mm
47mm
47mm
47mm
47mm
Tire Width Max
50mm
50mm
50mm
50mm
50mm
50mm
Tire Outer Diameter
678mm
678mm
678mm
678mm
678mm
678mm
Bike Length with Tires
1708mm
1708mm
1718mm
1728mm
1738mm
1758mm

Published Sizing Recommendations

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

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://blackmtncycles.com/tech-info/mcd-frame-tech/
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