Diamondback Mason Comp

Name: Diamondback Mason Comp
Brand: Diamondback

2017 MountainTrail Manufacturer page

Last known price: $1,999

Prices shown first for United States
Fork travel: 130 mm
Wheels: 27.5″
Drivetrain: 1 × 11 30t / 10–42t
Gear range: 420%
Weight: 13.15 kg 29.0 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

13 of 22 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Mason 27.5" Plus 6061-T6 Weapons Grade Aluminum w/ Double Butted Formed Top Tube, Down Tube, Seatstays, Tapered Head Tube, 148x12mm Boost Spec Dropouts, w/ Replaceable Hanger Not identified

Suspension

1 part

Fork
- Fox 34

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

5 parts

Front hub

32h Alloy, Boost 110x15mm Thru-axle, Sealed Cartridge Bearing, w/ CNC Disc Mount Not identified
Rear hub

32h Alloy, Boost 148x12mm Thru-axle, 4 Sealed Cartridge Bearing, w/ XD Cassette Body Not identified
Rims
- Diamondback
Spokes

14g Stainless Steel Not identified
Tires
- Schwalbe Nobby Nic

Cockpit and contact points

7 parts

Grips

DB4L "Lock on" 135mm Kraton Not identified
Handlebar

DB35 Alloy, 760mm Wide, 15mm Rise, 35mm Bar Bore Not identified
Headset
- FSA
Pedals

DB4L Alloy Platform w/ Replaceable Pins Not identified
Saddle

DB Race M-series Saddle Not identified
Seatpost
- KS
Stem

DB35 Alloy, 60mm, 35mm Bar Bore Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 418mm

Stack 604mm

Wheelbase 1131mm

Head angle 68.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	400	418	435	455
Stackmm	604	604	604	604
Top tube lengthmm	570	585	614	640
Seat tube lengthmm	395	420	470	520
Head tube lengthmm	110	110	110	110
Head tube angle	68°	68°	68°	68°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	440	440	440	440
Wheelbasemm	1089	1131	1149	1168
Front centermm	655	697	715	734
Bottom bracket dropmm	55	55	55	55
Bottom bracket heightmm	330	330	330	330
Standover heightmm	754	758	777	798
Fork rakemm	51	51	51	51
Trailmm	113	89	88	89
Stack/reach ratio	1.51	1.45	1.39	1.33
Suspension and parts
Crank lengthmm	170	175	175	175
Handlebar widthmm	760	760	760	760
Stem lengthmm	60	60	60	60

Not published by the manufacturer: Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum
Bicycle weight: 13.15 kg

29.0 lb

Suspension

Suspension configuration: Hardtail
Front travel: 130 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 11
Smallest sprocket: 10
Largest sprocket: 42
Lowest gear: 19.6 in
Highest gear: 82.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
Tire width: 2.8″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

130 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2017
Sample: 429 bicycles with this information
Coverage: 95.7% of the class

Lowest gear

19.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2017
Sample: 416 bicycles with this information
Coverage: 92.8% of the class

Highest gear

82.5 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2017
Sample: 416 bicycles with this information
Coverage: 92.8% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.5 km/h
Highest gear: 31.6 km/h

Total gear range 420%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 19.6–82.5 gear inches
Class reference (p10–p90): 16.8–94.9 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2017
Lowest gear: 416 bicycles with this information, 92.8% of the class
Highest gear: 416 bicycles with this information, 92.8% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2017 builds

Differences across 2017 builds
Specification	This bicycle Diamondback Mason Comp	Diamondback Mason	Diamondback Mason Pro	Diamondback Mason Trail
Frame
Bicycle weight	13.15 kg	12.8 kg	13.02 kg	13.22 kg
Suspension
Front travel	130 mm	120 mm	130 mm	120 mm
Drivetrain
Smallest chainring	30	28	30	30
Largest chainring	30	28	30	30
Rear sprockets	11	11	11	10
Smallest sprocket	10	11	10	11
Largest sprocket	42	42	42	40
Lowest gear	19.6 in	18.3 in	19.6 in	20.6 in
Highest gear	82.5 in	70.0 in	82.5 in	75.0 in
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost	Rigid seatpost