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Details

  • Large 29er wheels roll over obstacles easier and faster thanks to more momentum and a decreased angle of attack; plus, you get more tire contact for enhanced traction
  • RockShox Sektor Silver front fork to conquers trail obstacles with 140mm of travel
  • 6061-T6 weapons-grade aluminum frame boasts an array of formed and butted-and-formed tubes along with a tapered head tube to deliver a strong, stiff and responsive ride
  • Slack 66.5° head tube angle offers stable, confidence-inspiring handling on aggressive trails; 16.77 in. long chainstays make it easier to get the front up over obstacles
  • SRAM X5 shifter guides the SRAM X5 rear derailleur quickly and precisely through the 10 gears
  • RaceFace Respond single-ringed crankset with MRP chain guide is paired with 10-speed, 11-36t cassette for good all-around gearing; ISCG 05 tabs make an upgrade easy
  • Avid Elixir 5 hydraulic disc brakes deliver responsive braking thanks to a 180mm rotor up front and 160mm rotor in the back
  • Diamondback AM290 rims spin smoothly around sealed cartridge bearing hubs and are wrapped with Kenda Nevegal 29 x 2.2 (front) and Slant 6 29 x 2.0 (rear) tires
  • 15mm thru axle up front and 142x12mm thru axle in the rear ensure stiff, strong performance at the critical wheel/frame interface
  • Specs on the Diamondback Diamondback Mason 29er hardtail mountain bike are subject to change

Imported.

All bicycles sold at REI include a free warranty tune-up. New bikes go through a normal break-in period, after which readjustment is important for longevity and performance. Bring your new bike in to your local REI for its free tune-up within 20 hours of use or 6 months from purchase, whichever comes first. Contact your nearest REI bike shop to schedule this important service.

View all Diamondback Hardtail Mountain Bikes

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Specs

Best Use Mountain Biking
Frame 6061 aluminum
Bike Suspension Front Suspension
Fork Rock Shox Sektor Silver, 140mm travel with 15mm thru-axle
Crankset Raceface Ride, 32t
Bottom Bracket Raceface
Shifters SRAM X5
Rear Derailleur SRAM X5
Rear Cogs SRAM PG-1030, 11-36, 10-speed
Number of Gears 10 gear(s)
Brakes Avid DB1 hydraulic disc
Brake Levers Avid DB1
Rims Diamondback AM290
Front Hub Alloy, 32h
Rear Hub Alloy, 32h
Wheel Size 29 inches
Tires (Front) Kenda Nevegal 29 x 2.2 / (Rear) Slant 6 29 x 2.0
Handlebar Shape Riser Bar
Handlebar DB ProBar
Stem DB alloy
Seat Post DB SL309 Alloy Micro Adjust
Saddle DB Mason
Pedals DB Sound alloy platform
Headset FSA No. 57
Chain SRAM PC-1031
Weight Unavailable
Bike Weight Bike weight is based on median size, as sold, or the average of two median sizes.
Gender Unisex
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