Pivot Cycles is no stranger to aluminum construction. Owner/designer Chris Cocalis is one of the most accomplished aluminum frame makers in the business. Beginning with the Mach 4, Pivot's first five models were wrought from the stuff, and they featured a number of innovative construction techniques that set stiffness-to-weight standards which approached the best carbon frames of their day.
That said, even Chris admits that carbon composites have all but eliminated the demand for metal mountain bikes, which explains why when Pivot launched its Mach 6 into the ultra-competitive all-mountain/enduro category, it was carbon fiber from head to tail. Like most bike makers, Pivot's first carbon offerings had evolved from existing aluminum-framed models - so the Mach 6 was a bold statement: Pivot was playing the carbon game for keeps. Or so it seemed.Mach 6 AluminumWith sales of his carbon XC, DH and trail bikes setting new records for Pivot, why would Cocalis backtrack to make an aluminum Mach 6? The official answer is that some hydro-forming techniques have emerged that can produce variable wall thicknesses which can be prescribed at almost any location along the tube's length. At the same time, those frame members can be profiled and tapered to add stiffness where necessary, or slimmed to reduce weight. Cocalis figured that by employing those forming techniques, Pivot could once again challenge the strength-to-weight values of elite carbon fiber frames with an aluminum chassis. Another motivating factor (no surprise here), was that an aluminum chassis could substantially undercut the sticker price of a comparably equipped Mach 6 Carbon. Finally, a large number of elite level riders have not warmed up to carbon and would prefer a metal mountain bike. Enter, the Mach 6 Aluminum.
Details:• Frame: variable-thickness hydro-formed aluminum tubes, dw-link suspension, ISCG05 tabs, 148 x 12mm Boost axle spacing, 92mm PressFit bottom bracket.
• New, cold-forged wider and stiffer linkage designs with Enduro Max cartridge bearings
• Suspension Travel: 155mm (6.1”)
• Wheel size: 27.5"
• Shock: Custom-tuned Fox Factory Kashima Float DPS Shock with EVOL air sleeve
• Fork: Fox 36 Float (designed to work with forks from 150 to160mm travel, 40mm offset)
• External and internal cable routing
• Internal stealth dropper post compatible
• New removable front derailleur mount for Shimano’s side-swing front mech'
• Post mount disc brake attachments
• Same geometry as Mach 6 Carbon
• Medium frame weight: 7.4 pounds (3.36kg) including shock
• Sizes: X-small, small, medium, large, X-large
• MSRP: Complete builds start at $3499 USD, Frame and shock - $1999..
• Contact:
Pivot Cycles According to Pivot's press release, both the Mach 6 carbon and the new aluminum model have been designed to incorporate the new 148mm "Boost" rear hub spacing, which adds plenty of room for tires up to 2.4 inches wide, without lengthening the chainstays. Additional benefits of Boost are more symmetrical spoke lacing for the rear wheel and a better chain line for one-by drivetrains. Pivot states that most Shimano cranksets will operate with Boost spacing (all narrow Q-factor cranks fail the test), and some Race Face cranksets can adapt, but SRAM customers will need the extra three-millimeter-spaced Boost cranksets to get the proper chain line. In the back, Pivot says that only a Boost hub will work in order to obtain proper brake rotor and hub flange spacing. Boost forks, however, are not required.
Both the Mach 6 Aluminum and Carbon models share an all new linkage and yoke arrangement, which is said to dramatically increase the frame's lateral stiffness and shock stability. The suspension rocks on Duramax bearings which are cageless, with extra balls added to enhance their load carrying capacity at low rotational speeds. Here is the official word from the Pivot Press release:
| All-new linkages offer huge gains in overall stiffness - the upper linkage alone is 40-percent wider, 150-percent stiffer, and utilizes larger bearings at the frame attachment point. The new, redesigned clevis is now lighter, stronger and provides increased clamping force on the shock body. |
Pivot's new hydro-forming and variable wall thickness technology is less apparent in the curving top and down tubes, but is definitely showcased by the lower section of the seat tube, where it bulges to reinforce the dw-link rocker pivots - and by the swingarm, which uses a wildly formed central strut that widens to pick up the asymmetrical chainstays and then tapers to brace the seatstay assembly from the left side of the junction. All of the cable housing runs are full-length and external, with the exception of the internally routed right chain stay and a seat-tube port for a Stealth-style dropper post.
Suspension is specifically tuned for the Mach 6's dw-link suspension, as it uses a variable leverage rate that requires an air-sprung shock. The standard damper is a Fox Kashima Float shock with the DPS damping system. Pivot explains it like this:
| The Mach 6 Aluminum is spec'd with the 2016 Fox Factory Kashima with the new EVOL air sleeve, custom tuned specifically for enduro and trail riding. DPS stands for Dual Piston System - the shock features two separate sets of valving, similar to what you would find in Fox's external reservoir Float X design, while the EVOL sleeve significantly reduces the force required to initiate travel, for the ultimate in small bump compliance and better bottom-out resistance. |
Pivot also warns that the Mach 6 Aluminum (and the 2016 carbon Mach 6) was designed to work with the progressiveness of an air spring. and that coil shocks cannot provide the necessary spring curve, and will result in excessive bottoming. That should not be a huge issue, as the performance of air-sprung shocks has been elevated to near-perfection by pro-level enduro competition. Another possible concern is the yoke type rear shock attachment, which Pivot has designed to work with conventional shock eyes. The good news is that Pivot's yoke is compatible with most popular shocks, including the Cane Creek DB InLine.
The new Mach 6 Aluminum is available in five sizes, from X-small through X-large, to fit riders from 4-foot, eleven inches (150cm ) to well over six feet tall (+190cm ). Beyond the switch to Boost hub spacing, the
Mach 6's geometry is the same as the 2015 carbon version, which is a good thing. Pivot will offer a wide range of builds, from pro-level Shimano XTR and SRAM XX1, to more attainable Shimano SLX and SRAM X1-based ensembles. Pricing and weights of all build options have not been released, but complete builds will start at $3499 and Mach 6 Aluminum frames with the Fox Kashima Float Evol shock wil retail for $1999 USD. Watch PB for an upcoming review of Pivot's latest long-travel trailbike and in the meantime, enjoy their video edit on both the 2016 Mach 6 Aluminum, and the Boost-updated Mach 6 Carbon:
Videographer: Cameron Sylvester, Nomadik Motion"
The most versatile enduro bike in the world just got stronger, stiffer and now offers two frame material options for the ultimate in rider choice. Pivot is proud to introduce the new Mach 6 Carbon and Mach 6 Aluminum - choice of Bernard Kerr, Aaron Chase and the Pivot-Vittoria Pro Enduro Team. - Pivot Cycles"
And, Here's the 2016 Mach 6 Carbon:
MENTIONS: @pivotcycles
But when I got to the part where I read: "Boost axle spacing, 92mm PressFit bottom bracket.", my heart stopped like a knife had gone through it.
Back to dreaming of owning a Norco.
The necessity of a stronger/stiffer wheel is arguable as the vast majority of riders will hardly flex a wheel, leaving the only tangible benefit to boost being the ability to run "plus sized" tires, which many new boost equipped bikes cannot.
And clearance for 2.4 tyres, I've put 2.4 tyres on all of my bikes without any problem, with 135x12 spacing. Told you, a solution to a problem that doesn't exist
Heck 2.4 fits on my solo/5010 without boost also
metro.co.uk/2015/01/08/whats-that-smell-the-average-brit-doesnt-wash-for-three-months-of-the-year-5013689
I'm off for a shower, it is Tuesday after all
nice looking bike but would not buy with such little tyre clearance.
But this only allows for 2.4 max so that's won't work here. I think scott allows 2 sizes...
@taletotell Yeah, I was thinking something along those lines too. It's possible Pivot tried to make their frame a little burlier than the Santa Cruz. But modern Santa Cruz frames are pretty much unanimously praised for their stiffness and durability, so how much burlier would you really want the bike to be? At some point you're just adding weight to the frame for no added benefit.
HAHAHA who am i kidding!!
Of course, I also bought it in 2012, so I can excuse the "2012 geometry!"
Now, if they'd just make a 5.7C in true 27.5" (not the crap conversion that works with tiny tires only), with a bit more reach and internal dropper and cable routing, and I'd be one happy camper.
In what world is that even remotely true? I live in Bellingham, home to a half dozen high end mountain bike shops. Looking at the "serious mountain bike" section of the floor in those shops, I'd say you're looking at about 2/3 aluminum, 1/3 carbon - not in the closeout section, but for brand new stock. If carbon had truly "all be eliminated" demand for alloy frames, would these retailers stock those alloy frames?
I think carbon, if well done, is great. But I think the segment of the market where carbon dominates is a very narrow niche. That blanket statement makes very little sense to me. I'd suspect that what happened here is Pivot discovering that going all carbon was just a little more boutique than they really wanted to be...
So far Intense and Pivot have made this move...maybe others but they are the two boutique brands I can think of. I would love a top-end Carbon bike and frankly could likely afford it but if I can buy a comparable Alu bike that is only a pound heavier for $1500+ cheaper it only makes sense.
I agree with you that we'll see more carbon in bikes in the future. My point was that alloy bike frames are still dominating (i.e., RC's comment about demand for alloy bikes being all but eliminated seems, at best, a few years premature). I'm not sure Carbon will ever fully take over - there are some applications that just lend themselves to aluminum in a way that composites can't, at least not at decent cost/benefit. Both aluminum and carbon are energy intensive in different stages of their sourcing/production/manufacturing, and both require a fair amount of tooling for mass production. But large scale composite manufacturing is only really coming into its own, thanks to aerospace and automotive demand (there's a company here in WA that's making carbon fiber tubs for BMW mass production cars in an industrial, rather than artisanal, process - that sort of thing will eventually make composites much more mainstream than they are today).
I have to laugh when people talk about "plastic" bikes, so I definitely get where you're coming from with those quotes.
spoken like a true marketing manager - I won't be buying a plastic frame anytime soon.
Richard Cunningham? *scrolls to top* Yup, Richard Cunningham.
But for serious, I am a little surprised so many enduro guys are running coils.
I'm sure the engineers had nothing to do with it.
Thats a nice looking bike, I'd run it.
Coot
(in Pivot's defense, they have taken care of him)
I'm assuming you are talking about the park in your neighborhood where you take your children to play on the swings?
The line @ 1:40 is now closed off. "Stava line"
The trail @1:14 is a green circle that people pedal up to get to the good's and others push strollers down.
I could care less what you ride on your own time but if you make an edit in here be a pro about it, the world is watching.
I really dislike external cabling, especially running down the most vulnerable part of the frame, and then to put a bottle there? hello, giardiasis...
No thanks, Awful geometry.
But then all the 18-25 year old know it alls on this site starting pissing and moaning, "Now my bike is obsolete and my parts aren't interchangeable with every new bike on the market. Evil money grubbing industry!"
Basically it's a slightly wider hub that's just wide enough not to fit in your old bike. You could adapt your old wheels to fit in the new wider frames, but then you'd be missing out on the benefit of the wider hub flanges.
www.amazon.com/gp/product/B00AXE635O?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00