Dirt Rag Magazine

Inside Line: Pivot updates the Mach 6 with new carbon and aluminum frames

In the rapidly moving world of all-mountain bikes, the Mach 6 was far from old or outdated, but Pivot isn’t a company to sit on its laurels (whatever the hell that means).


Mach 6 Carbon

Instead, it updated the carbon bike, and released an aluminum version of the well received frame. Both bikes use a new linkage that claims to be 150 percent stiffer, has larger bearings and lighter linkages. Sounds good to me. The rear end gets Boost 148 spacing, because that is what’s happening, like it or not, and there are solid reasons to make the change. For those with the cheese, you can get your Di2 on with Pivot’s Cable Port System, a first for long travel bikes.



Frame details

  • Full carbon frame featuring leading edge carbon fiber materials and Pivot’s proprietary hollow core internal molding technology.
  • 155mm (6.1 inches) of renowned dw-link suspension
  • 27.5 wheels for the fastest descents and superior rollover in technical terrain
  • Pivot’s new ultra-stiff, DH-inspired, double-wishbone rear triangle design
  • All new, cold-forged wider and stiffer upper and lower linkage design with Enduro Max Cartridge Bearings
  • New 12 x 148 mm Boost rear spacing for maximum stiffness and control.
  • Custom-tuned Fox Factory Kashima Float X shock with EVOL air sleeve.
  • Designed to work with forks from 150-160 mm in travel
  • All new internal cable routing, featuring Pivot’s Cable Port System and full Di2 integration
  • Internal stealth dropper post compatible
  • New Pivot removable front derailleur mount for a clean frame design with 1X and perfect front shifting with Shimano’s side-swing 2X system.
  • Post mount disc brake mounts for precision and weight savings
  • PF92 bottom bracket for light weight, durability and ease of maintenance
  • Rubberized leather chainstay, inner seat stay, and down tube protectors for a quiet ride and higher impact resistance
  • Medium frame weight: 6.5 pounds including shock.
  • Available in sizes XS, S, M, L, XL for riders between 4’10″ and 6’2″+


Mach 6 Aluminum


And much as we love carbon bikes, our kid’s college accounts, or our microbrew beer funds often prefer metal frames. The aluminum version of the Mach 6 is far from cheap, but at $2,000, it undercuts the carbon frame ($3,000) by a cool grand. Fully built up, the Mach 3 Aluminum starts at $3,500 while the Mach 6 Carbon completes start at $4,700. The metal frame is claimed to be as stiff as the carbon, but weight is where the penalty is paid, with a 7.4 pound frame and shock in size medium, which isn’t heavy, but it does tip the scales at almost a pound heavier than the 6.5 pound carbon frame.



Another nice touch is a full size range, from extra small through extra large, which covers a lot of heights, something that can be missing in some smaller brands S, M, L sizing.

Pivot’s newest aluminum frameset utilizes next-generation, variable wall thickness hydro-forming – bringing carbon-level strength, stiffness, precision, and control to produce the ultimate aluminum frame design



Carbon frames and compete bikes are shipping to dealers as I type. I’d pick a blue frame with the new XT.




Aluminum will follow in September. I like the orange, also with XT, although the new SRAM GX would be swell as well.




In action


Inside Line: Our first look at the New Pivot Mach 429 Trail


The latest Pivot trail and all-mountain bikes—the Mach 4 and Mach 6—have been a big success, but most recently the 29ers have been restricted to the cross-country end of its lineup. Now the new Mach 429 Trail lets 29er fans—ourselves included—enjoy the excellent dw-link suspension on more rowdy trails.


Pivot started the design with a ride experience in mind, not a travel number, so while it may seem odd that the bike ended up with 116mm of travel, the new linkage design features influences from the Mach 6 and Phoenix downhill bike for a much larger feel. The suspension moves through a custom tuned Fox Float DPS shock with two sets of valves and pistons similar to what is found in the dual chamber Fox Float X shock.


The full carbon frame is designed for a 120mm or 130mm fork and while it’s sold as a 29er, the Boost spacing front and rear allow it to fit a 27.5×3.0 wheel and tire too.


While most of Pivot’s mountain bikes have internal cable routing, the 429 Trail routes its cables on the bottom of the down tube for easy maintenance—though the dropper post has stealth routing. Those cables run to a direct mount or standard rear derailleur and a Shimano side-swing front derailleur.


If built with a single chainring, the mount is removable for a cleaner look. The external routing also makes the frame a little less expensive than the Mach 4 or Mach 6. Like all Pivot bikes, the bottom bracket shell is a Shimano PF92 that allows the frame and bottom bracket junction to be as large and stiff as possible.


The geometry is in line with the current trend with a longer front center and slacker head tube angle. At 67.5 degrees it is on par with the new breed of 29er trail bikes like the Kona Process 111, Evil The Following, Specialized Camber EVO and Transition Smuggler.


The Mach 429 Trail frame and shock will be available in two colors and sell for $2,499 when they go on sale at the end of July and complete bikes will be available in eight different build kits from $3,999.


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