2021 Diamondback Bicycles Mason 2 Base

Design
Flat Bar, Hardtail (Front suspension)
Frame
Aluminum
Suspension
120mm fork travel
Features
Disc brake
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

SM
MD
LG
XL
Stack
590mm
590mm
604mm
617mm
Reach
421mm
435mm
451mm
463mm
Stack to Reach Ratio
1.4:1
1.36:1
1.34:1
1.33:1
Seat Tube Length, C-T
420mm
460mm
510mm
560mm
Top Tube Length, Effective/Horizontal Center
590mm
605mm
625mm
640mm
Top Tube Slope
19.1deg
14.7deg
10.9deg
7.3deg
Head Tube Angle
68deg
68deg
68deg
68deg
Seat Tube Angle
74deg
74deg
74deg
74deg
Head Tube Length
110mm
110mm
125mm
140mm
Bottom Bracket Drop
55mm
55mm
55mm
55mm
Bottom Bracket Height
308.1mm
308.1mm
308.1mm
308.1mm
Chainstay Length
435mm
435mm
435mm
435mm
Chainstay Length Horizontal
431.5mm
431.5mm
431.5mm
431.5mm
Front-Center
683.7mm
698.7mm
720.6mm
737.5mm
Front-Center Horizontal
681.5mm
696.5mm
718.5mm
735.5mm
Wheelbase
1113mm
1128mm
1150mm
1167mm
Fork Offset/Rake
51mm
51mm
51mm
51mm
Trail
91.7mm
very high
91.7mm
very high
91.7mm
very high
91.7mm
very high
Mechanical Trail
85mm
85mm
85mm
85mm
Wheel Flop
31.9mm
31.9mm
31.9mm
31.9mm
Standover Height
727mm
752mm
788mm
823mm
Tire to Pedal Spindle
150.6mm
170 mm cranks
160.5mm
175 mm cranks
182.5mm
175 mm cranks
199.4mm
175 mm cranks
Pedal Spindle to Ground Clearance
138.1mm
170 mm cranks
133.1mm
175 mm cranks
133.1mm
175 mm cranks
133.1mm
175 mm cranks

Base Build

SM
MD
LG
XL
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
Tire Width
2.8in
2.8in
2.8in
2.8in
Tire Outer Diameter
726.2mm
726.2mm
726.2mm
726.2mm
Bike Length with Tires
1839.2mm
1854.2mm
1876.2mm
1893.2mm
Crank Length
170mm
175mm
175mm
175mm
Handlebar Width
760mm
760mm
760mm
760mm
Stem Length
60mm
60mm
60mm
60mm

Published Sizing Recommendations

Height
5 ft 4 in
to
5 ft 7 in
5 ft 7 in
to
5 ft 10 in
5 ft 10 in
to
6 ft 1 in
6 ft 1 in
to
6 ft 4 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
Hardtail Trail MTB
Source:https://www.diamondback.com/mason-2-d42