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Diamondback Mason Bike 2014

Item #: BI230A01
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USD$1,189.99 30% off USD$1,700.00 msrp
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Diamondback Mason Bike 2014

As 29er bikes become more prevelant, bike companies continue to push the envelope with new designs for the 29er market. Located in the Pacific Northwest, Diamondback needed a 29inch offering that was a bit more capable of handling local terrain that can often be aggressive if not also wet and muddy. Enter the Mason Pro All Mountain hardtail. This rig is slack and low slung—meant for today’s shredder who wants efficiency on the pedal uphill but also the freedom to charge down the other side with aggressiveness.

The Mason Pro features an All Mountain 6061-T6 Weapons Grade Aluminum frame with a formed top tube, a formed and butted down tube, a tapered head tube, a direct mount front derailleur mount, ISCG tabs and a 142×12mm Maxle drop out.

Loading up the front end is a ROCKSHOX Sektor 29 Silver fork with 140 mm of travel, a 15mm Maxle, Solo Air, external rebound adj. w/ turnkey lockout, magnesium lowers, and an alloy 1.5 tapered steerer tube. This also lends to a slack, 66.5 degree head angle. Combine this with 433mm/ 17.05" long chain stays and you can clearly see where this is going. This keeps the bike maneuverable, easy to manipulate in downhill and aired out sections, and easier to get the front end of the bike up with the slack head angle. Because the long travel fork lifts the front end of the bike up pretty high, Diamondback designed a formed, low top tube for better clearance over the bike.

32h AM290, 29” double wall disc specific rims are laced to sealed cartridge bearing hubs and SRAM Maxle QR for a stout yet light weight wheelset.
  • Angle of Attack – Larger wheels decrease your angle of attack by allowing you to roll over obstacles easier and faster. Bigger wheel = smaller obstacle.
  • Momentum – A larger wheel enables one to carry momentum easier though obstacles.
  • Surface Contact – 29”wheels are less prone to sinking in soft material such as sand and mud due to the larger contact patch causing lower ground pressure. The longer contact patch increases cornering and straight line traction.
  • Stability – The relative position of the bottom bracket/cranks to the axles in the wheels also means that your relative center of gravity is lower. This results in a feeling of riding “in” the bike rather than on top of it.
  • Tire Clearance – with more tire choices than any platform, the 29”wheel easily accommodates off road as well as commuting tires.
  • Taller Riders – 29" bikes tend to offer taller riders a more “natural” frame geometry.
The drivetrain sells itself with a RACEFACE Ride w/ Narrow-Wide 32t single ring – 10 spd crankset and a Raceface outboard bearing bottom bracket. Combine this with a SRAM X-5, Mid Cage 10spd rear derailleur and trigger shifter, and a SRAM PG-1030 10spd Cassette (11-36t) and you have a minimalist approach with a variety of options to get you up the hill with ease. AVID DB1 hydraulic disc brakes with 180mm front and 160mm rear G2 rotors offer more than enough power to stop when and where you see fit. The Mason's cockpit is decked out with Diamondback's customized DB 6061 Aluminum 3D forged stem with DB ProBar Handlebars, a 30.9mm Alloy DB Seatpost with Micro Adjust action, and the DB MASON Signature saddle.


BIKE SPECS
Sizes
15.5" SM, 17" MD, 19" LG, 21" XL
Frame
Mason 29" All Mountain 6061-T6 Weapons Grade Aluminum w/formed top tube, Butted / formed down tube / Seatstays, tapered head tube, ISCG, 142x12mm Maxle drop out
Fork
ROCKSHOX Sektor 29 Silver, 140 mm travel, 15mm Maxle, Solo Air, external rebound adj. w/turnkey lockout, magnesium lowers, Alloy 1.5 tapered steerer tube
Cranks
RACEFACE Ride w/ Narrow-Wide 32T single ring
Bottom Bracket
Raceface BB
F. Derailleur
MRP 1X - D mount chain guide
R. Derailleur
SRAM X-5, Mid Cage, 10spd
Shifter
SRAM X-5 10spd trigger
Brake Levers
AVID DB1 Hydraulic Levers w/ Tooled Reach Adj.
Brakes
AVID DB1 Hydraulic Disc w/ 180mm Front & 160mm Rear G2 Rotors
Cassette
SRAM PG-1030 10spd Cassette (11-36t)
Rims
32h AM290, 29" Doublewall Disc
Tires
KENDA Nevegal 29x2.2 frt / Slant 6 29x2.0 rear, Folding
Pedals
DB Sound Alloy w/ molded traction pins
Handlebar
DB ProBar 740mm width 31.8mm Mid Rise
Stem
DB AL6061 3D forge 31.8, 50mm ext. 7 degree rise
Seatpost
DB SL309p Alloy Micro Adjust 30.9mm
Seat
DB MASON Signature saddle
Headset
FSA No57 Taper 1.5 / 1 1/8" Alloy cups, Sealed Cartridge
Chain
SRAM PC-1031 Power Link - Gold
Hubset
Front: 32h 15mm thru axle, alloy, sealed cartridge bearing disc
Rear: 32h 142x12 sealed cartridge bearing, 12mm thru axle, Cassette w/ CNC Disc mount, w/ Sram Maxle QR
Spokes
14g Stainless Steel
Grips
DB4L 135mm Kraton
Extras
Owner’s manual, Chainstay Protector, H20 bottle mounts
Note: Specifications subject to change at any time


GEOMETRY
Size
15.5" Small
17" Medium
19" Large
21" X Large
Seat Tube Length
15"
17"
19"
21"
Standover Height
30.5"
31.0"
31.5"
32.7"
Top Tube Length
22.5"
23.7"
24.4"
25.3"
Head Tube Length
110mm
110mm
110mm
110mm
Head Angle
66.5º
66.5º 66.5º 66.5º
Seat Angle
73º 73º 73º 73º
Wheel Base
1089mm
1108mm
1127mm
1145mm
Chain Stay Length
433mm
433mm
433mm
433mm
Fork Offset
40mm
40mm
40mm
40mm
BB Height
330mm
330mm
330mm
330mm
Stem Length
45mm
45mm
60mm
60mm
Handlebar Width
740mm
740mm
740mm
740mm
Crank Length
170mm
175mm
175mm
175mm
Seat Post Length
350mm
350mm
350mm
350mm
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Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.