Mason 1

97 % of 100
Assembly Options Professionally assembled by your local dealer, or DIY the assembly - its up to you!
Financing Available Buy Now, Pay Later with Klarna. We’ve partnered with Klarna to offer flexible payment options to pay over time.
30 Day Returns Our love your ride guarantee – if you’re not 100% happy with your bike, we’re not happy either. Click here for more details
Frame Warranty Covered for at least 5 years! Check out the details to see if your bike qualifies for longer.
Mechanical Disc
Tire Size
Frame material

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 27.5×3.0-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 1×10 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.

  • 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, 10mm QR, Cassette w/ CNC Disc Mount, 141mm
  • Spokes 14g Stainless Steel
  • Rims Diamondback MD35 35mm Doublewall, Tubeless Compatible, 32h
  • Tires Vee Rubber Bulldozer, 27.5x3.0 Tires, Tubeless Ready
  • 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 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 Tool Kit, Tubeless Compatible - Requires Tubeless Tape, Valves and Sealant to complete (not included).
  • Brakes Tektro Aries Mechanical Disc, w/ 180mm Front / 160mm Rear Rotors
  • Product ID 4501

* Specifications are subject to change without notice

Frame Size SM/ 5'4"-5'7" MD/ 5'7"-5'10" LG/ 5'10"-6'1" XL/ 6'1"-6'4"
Rider Height - - - -
Bike Stand Over Height 727.0 mm 752.0 mm 788.0 mm 823.0 mm
Bike Seat Tube Length 420.0 mm 460.0 mm 510.0 mm 560.0 mm
Bike Top Tube Length 590.0 mm 605.0 mm 625.0 mm 640.0 mm
Bike Head Tube Length 110.0 mm 110.0 mm 125.0 mm 140.0 mm
Bike Head Angle 68.0 ° 68.0 ° 68.0 ° 68.0 °
Bike Seat Angle 74.0 ° 74.0 ° 74.0 ° 74.0 °
Bike Wheel Base 1113.0 mm 1131.0 mm 1149.0 mm 1168.0 mm
Bike Chain Stay Length 435.0 mm 435.0 mm 435.0 mm 435.0 mm
Bike Fork Offset 51.0 mm 51.0 mm 51.0 mm 51.0 mm
Bike Bb Height 330.0 mm 330.0 mm 330.0 mm 330.0 mm
Bike Bb Drop 55.0 mm 55.0 mm 55.0 mm 55.0 mm
Bike Stem Length 60.0 mm 60.0 mm 60.0 mm 60.0 mm
Bike Handlebar Width 760.0 mm 760.0 mm 760.0 mm 760.0 mm
Bike Crank Length 170.0 mm 175.0 mm 175.0 mm 175.0 mm
Bike Seat Post Length 350.0 mm 350.0 mm 350.0 mm 350.0 mm
Bike Stack 590.0 mm 590.0 mm 604.0 mm 617.0 mm
Bike Reach 421.0 mm 435.0 mm 451.0 mm 462.0 mm
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