Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Diamondback
2020 Diamondback Mason 1
Previous used estimate
$339 - $349
Actual value depends on condition, size, and local demand.
Value Guide market data · 2020 Diamondback Mason 1
12-month projected trend
9%
Direction and magnitude, not judgment
vs. category average
7%
Drops faster than category avg
Price over time - 2020 Diamondback Mason 1
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Mason model years
Compare Mason 1 models
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Overview
About this bike
Rip the trail less traveled on the Mason 1, a hard-charging 27.5+ hardtail. The Mason 1 is a hard-charging trail bike that plows through the rough stuff, yet remains fun and flickable. Plus-size tires add insane levels of traction and control without adding the weight of a rear suspension system. This hardtail gets the job done with sturdy double-wall wheels wrapped with 27.5x3.0-inch tires. An SR Suntour XCR 34 fork provides 120mm of travel to get you through the rough stuff, while Tektro Aries mechanical disc brakes keep your speed under control. The 1x10 Shimano drivetrain makes shifting simple, meaning no pesky front derailleur to fiddle with while you monster-truck over rocks and roots. Take the trail less traveled? Sure. And with the Mason 1 you’ll be ripping the trail less traveled. - Light and strong aluminum frame with precision-enhancing 9mm Boost dropouts and rear thru-axle - SR Suntour XCR34 27.5"+ suspension fork, 120mm travel, coil spring, 6061 forged alloy crown, alloy tapered steerer tube, 34mm stanchions, 110x15mm thru-axle - Shimano Deore 1x drivetrain with ultra-wide gearing takes the sting out of tough climbs - Tektro Aries mechanical disc brakes increase your control - You gain extra stability and grip thanks to wide rims shod with 3.0-inch plus-size tires
Specifications
- Subtype
- Cross Country
- Category
- Mountain
- Component Fork
- SR Suntour XCR34 27.5"+ Suspension Fork, 120mm Travel, Coil Spring, 6061 Forged Alloy Crown, Alloy Tapered Steerer Tube, 34mm Stanchions, 110x15mm Thru-axle
- Component Hubs
- Front: 32h Alloy, Boost 110x15mm, w/ CNC Disc Mount Rear: 32h Alloy, 10mm QR, Cassette w/ CNC Disc Mount, 141mm
- Component Size
- Small, Medium, Large, X-Large
- Component Stem
- DB35 Alloy, 60mm, 35mm Bar Bore
- Product Family
- Mason
- Component Axles
- Front: 110 x 15mm Rear: 148 x 12mm
- Component Chain
- KMC X10, 10 Speed
- Component Color
- Dark Blue Gloss
- Component Frame
- Mason 27.5" Plus 6061-T6 Weapons Grade Aluminum w/ Double Butted Formed Top Tube, Down Tube, Seatstays, Tapered Head Tube, ISCG-05 Tabs, 9mm Boost Dropouts, w/ Replaceable Hanger
- Component Tires
- Vee Rubber Bulldozer, 27.5x3.0 Tires
- Component Brakes
- Tektro Aries Mechanical Disc, w/ 180mm Front / 160mm Rear Rotors
- Component Pedals
- DB4L Alloy w/ Molded Traction Pins
- Component Saddle
- DB Race M-series Saddle
- Component Headset
- FSA NO.57, Sealed Cartridge for Tapered Headtube
- Component Crankset
- Alloy Arm
- Component Shifters
- Shimano Deore M6000, 10 Speed
- Component Seat Post
- DB Alloy Micro Adjust, 30.9mm
- Component Chainrings
- 30T Steel "Narrow Wide" Single Ring
- Component Handlebars
- DB35 Alloy, 760mm Wide, 15mm Rise, 35mm Bar Bore
- Component Tape Grips
- DB "Flanged" 135mm Silcone
- Component Brake Levers
- Tektro 2 Finger Alloy Linear w/ Reach Adjust
- Component Bottom Bracket
- Sealed Cartridge
- Component Rear Derailleur
- Shimano Deore M6000 Shadow Plus, 10 Speed
- Component Accessories Extras
- Tool Kit
- Component Cassette Rear Cogs
- Shimano HG500, 10 Speed, 11-42T
- Hubs
- Front: 32h Alloy, Boost 110x15mm, w/ CNC Disc Mount Rear: 32h Alloy, 10mm QR, Cassette w/ CNC Disc Mount, 141mm
- Tires
- Vee Rubber Bulldozer, 27.5x3.0 Tires
- Crankset
- Alloy Arm
- Pedals
- DB4L Alloy w/ Molded Traction Pins
- Bottom Bracket
- Sealed Cartridge
- Chain
- KMC X10, 10 Speed
- Saddle
- DB Race M-series Saddle
- Headset
- FSA NO.57, Sealed Cartridge for Tapered Headtube
- Rear Derailleur
- Shimano Deore M6000 Shadow Plus, 10 Speed
- Stem
- DB35 Alloy, 60mm, 35mm Bar Bore
- Accessories & Extras
- Tool Kit
- Axles
- Front: 110 x 15mm Rear: 148 x 12mm
- Brake Levers
- Tektro 2 Finger Alloy Linear w/ Reach Adjust
- Brakes
- Tektro Aries Mechanical Disc, w/ 180mm Front / 160mm Rear Rotors
- Chainrings
- 30T Steel "Narrow Wide" Single Ring
- Fork
- SR Suntour XCR34 27.5"+ Suspension Fork, 120mm Travel, Coil Spring, 6061 Forged Alloy Crown, Alloy Tapered Steerer Tube, 34mm Stanchions, 110x15mm Thru-axle
- Frame
- Mason 27.5" Plus 6061-T6 Weapons Grade Aluminum w/ Double Butted Formed Top Tube, Down Tube, Seatstays, Tapered Head Tube, ISCG-05 Tabs, 9mm Boost Dropouts, w/ Replaceable Hanger
- Handlebars
- DB35 Alloy, 760mm Wide, 15mm Rise, 35mm Bar Bore
- Seat Post
- DB Alloy Micro Adjust, 30.9mm
- Shifters
- Shimano Deore M6000, 10 Speed
- Tape/Grips
- DB "Flanged" 135mm Silcone
- Color
- Dark Blue Gloss
- Size
- X-Large
- Cassette/Rear Cogs
- Shimano HG500, 10 Speed, 11-42T
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.