DiamondBack Mason '16

$2,000.00 $1,375.98
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Our popular Mason line is comfortable at the front of the pack. An established leader in the slack big-wheel hardtail category, it made sense to continue to push the limits with the emergence of 27.5 Plus and Boost technology. In a nutshell, this new configuration means significant gains in traction and wheel stiffness, with very little loss from its 29” wheel. If you’ve ridden a previous incarnation of the Mason, this may be hard to believe. But it’s true. We made sure to keep the ride characteristics as similar as we could: the butted/formed aluminum frame is low-slung and slack, with a 120mm fork. The ride has stayed distinctly all-mountain, especially with the increase in traction from running this wide of a tire. Avid hydraulic brakes, a wide-range 2×10 SRAM drivetrain, and wide bars indicate that the Mason is ready to lead the way again.


  • 6061-T6 aluminum frame with 148x12 Boost dropouts
  • Rockshox Reba 120mm 27.5+ fork w/rebound and lockout control
  • Raceface Ride cranks, 36/22teeth
  • Avid DB1 hydraulic disc brakes, 180/180mm rotors
  • SRAM X-5 10spd Shifters & Rear Derailleur
  • Size Guide
    Convert mm to inches
    Seat Tube Length **394.0mm432.0mm483.0mm533.0mm
    Standover Height775.0mm787.0mm800.0mm831.0mm
    Top Tube Length *572.0mm602.0mm620.0mm643.0mm
    Head Tube Length110.0mm110.0mm110.0mm110.0mm
    Head Angle66.5mm66.5mm66.5mm66.5mm
    Seat Angle73.0mm73.0mm73.0mm73.0mm
    Chain Stay Length440.0mm440.0mm440.0mm440.0mm
    Fork Offset40.0mm40.0mm40.0mm40.0mm
    BB Height330.0mm330.0mm330.0mm330.0mm
    Stem Length45.0mm45.0mm60.0mm60.0mm
    Handlebar Width740.0mm740.0mm740.0mm740.0mm
    Crank Length170.0mm175.0mm175.0mm175.0mm
    Seat Post Length350.0mm350.0mm350.0mm350.0mm
    * Measured Horizontally** Measured from Center
  • Specs
    SizesS/15.5"  M/17"  L/19"  XL/21" 
    FrameMason 27.5" Plus 6061-T6 Weapons Grade Aluminum w/Formed Top Tube, Butted / Formed Down Tube / Seatstays, Tapered Head Tube, ISCG, 148x12mm Boost Spec Dropouts
    ForkRockshox Reba 27.5+, 120mm, Air, external rebound adj. w/turnkey lockout, Magnesium Lowers, Alloy 1.5 Tapered Steerer Tube
    HeadsetFSA No57 Taper 1.5 / 1 1/8" Alloy cups, Sealed Cartridge
    CranksRaceface Ride 36/22T
    Bottom BracketRaceface Outboard Bearing
    F. DerailleurSRAM X5 High Direct Mount
    R. DerailleurSRAM X7 Type 2.1
    ShifterSRAM X5 10spd
    CogsetShimano HG50 10spd (11-36t)
    ChainSRAM PC-1031 Power Link - Gold
    BrakesAvid DB1 Hydraulic Disc, 180mm/180mm Centerline Rotors
    Brake LeversAvid DB1 Hydraulic Levers w/ Tooled Reach Adj.
    Front HubAlloy Disc 32h Boost 110x15mm Thru Axle, Sealed Cartridge Bearing
    Rear HubAlloy Disc 32h Boost 148x12mm Thru Axle, 4 Sealed Cartridge Bearing
    Spokes14g Stainless Steel
    RimsDB OffPiste32 Doublewall Disc, 32h Tubless Compatible
    TiresSchwalbe Nobby Nic 27.5x2.9" Performance, Folding, Tubless Compatible
    HandlebarDB35, 760mm width, 15mm rise, 35mm barbore
    GripsDB4L "Lock on" 135mm Kraton
    StemDB35, 60mm length, 35mm barbore
    SeatpostDB Micro Adjust 30.9mm
    SeatDB Race M-series saddle
    ExtrasOwner’s Manual, Chainstay Protector, Clear Coat, H20 bottle mounts
    NoteSpecifications Subject to Change