Mason 1

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Mason 1

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$799.99
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Mason 1

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What’s the deal with these so-called 27.5 plus bikes? In a nutshell, bigger tires. If that doesn’t sound exactly revolutionary, consider this: Plus-size tires add insane levels of traction and control to trail bikes without adding weight and slowing you down. The Diamondback Mason 1 is a hard-charging hardtail that plows through the rough stuff, yet remains fun and flickable.

The Mason 1 gets the job done and keeps things simple with sturdy double wall wheels wrapped with 27.5 x 3.0 inch tires. The 1x10 drivetrain keeps 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.

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
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
Headset FSA NO.57, Sealed Cartridge for Tapered Headtube
Cranks Alloy Arm w/ 30T Steel "Narrow Wide" Single Ring
Bottom Bracket Sealed Cartridge
Rear Derailleur Shimano Deore M6000 Shadow Plus, 10 Speed
Shifter Shimano Deore M6000, 10 Speed
Cogset Shimano HG500, 10 Speed, 11-42T
Chain KMC X10, 10 Speed
Front Hub 32h Alloy, Boost 110x15mm, w/ CNC Disc Mount
Rear Hub 32h Alloy, 9mm QR, Cassette w/ CNC Disc Mount
Spokes 14g Stainless Steel
Rims Diamondback 35mm Doublewall, 32h
Tires Chaoyang Big Daddy 27.5 x 3.0
Brakes Tektro Aries Mechanical Disc, w/ 180mm Front / 160mm Rear Rotors
Brake Levers Tektro 2 Finger Alloy Linear w/ Reach Adjust
Pedals DB4L Alloy w/ Molded Traction Pins
Handlebar DB35 Alloy, 760mm Wide, 15mm Rise, 35mm Bar Bore
Grips New DB "Flanged" 135mm Silcone
Stem DB35 Alloy, 60mm, 35mm Bar Bore
Seat DB Race M-series Saddle
Seatpost DB Alloy Micro Adjust, 30.9mm
Extras Owner’s Manual, Assembly Guide, Tool Kit*
Bike Size SM/15.5 MD/17 LG/19 XL/21
Seat Tube Length 395.0mm 420.0mm 470.0mm 520.0mm
Stand Over Height 754.0mm 758.0mm 777.0mm 798.0mm
Top Tube Length 570.0mm 585.0mm 614.0mm 640.0mm
Stack 604.0mm 604.0mm 604.0mm 604.0mm
Reach 400.0mm 418.0mm 435.0mm 455.0mm
Head Tube Length 110.0mm 110.0mm 110.0mm 110.0mm
Head Angle 68.0° 68.0° 68.0° 68.0°
Seat Angle 73.0° 73.0° 73.0° 73.0°
Wheel Base 1089.0mm 1131.0mm 1149.0mm 1168.0mm
Chain Stay Length 440.0mm 440.0mm 440.0mm 440.0mm
Fork Offset 51.0mm 51.0mm 51.0mm 51.0mm
BB Drop 55.0mm 55.0mm 55.0mm 55.0mm
Stem Length 60.0mm 60.0mm 60.0mm 60.0mm
Handlebar Width 760.0mm 760.0mm 760.0mm 760.0mm
Crank Length 170.0mm 175.0mm 175.0mm 175.0mm
Seat Post Length

Customer Reviews Write Your Own

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Great bike. Impressed with DB and 27.5+

Review by Donny
Overall Quality

Impressed with quality of bike and the feel of the monster 27.5+ tyres. The slate blue is gorgeous. It is a sexy, mean and tough looking machine. Pictures do not do it justice. Lost no agility from my previous bikes with old school 26" wheels. Got this to be a reliable second bike to my 2008 specialized enduro elite when I'm too busy to rebuild air shock and fork... and for a loaner for my buddies that I am trying to get into the sport... and a test to see if I want to get the plus sized tyres on my next bike... a DB Catch or DB Release later this fall or next spring. Jury is still out on big tires, but I AM SERIOUSLY IMPRESSED. I will be riding this often. Back wheels do double as shocks. Can bunny hop with ease and have never been able to wheelie/manual better. I'm 5'10"175 lbs and I got the large. Fits perfect. 34mm Stanchions are stout and stiff. Don't let the mountain bike geeks fool you, there is much to be said with coil/spring forks, including little to no maintenance. My 1998 Schwinn Moab 2 with the old Judy coil fork bombed down Porcupine Rim to almost every great trail in the rockies... and this Mason 1 is 10x that bike. Even with the lower end fork, I would consider this to be an all mountain bike. Funny how we think a $600-$800 bike is budget, but this can take you where ever you need to go. Well played, DB. Well played. Great engineering and value. I will be back for more.

(Posted on 8/3/2018)

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