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.
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.