When Pivot’s carbon expertise is joined by ENVE, only good things are to be expected — and that’s just what you’ll find in our Mach 6 Carbon Featured Mountain Bike. Then consider RockShox’s 160mm Pike RCT3 and Reverb Stealth, along with SRAM XX1 and Shimano XTR joining the party, and this Mach 6 is easily approaching mountain bike nirvana.
One reason for the lofty status is because the 155mm-travel Mach 6 Carbon features a top tube that’s an inch to three-quarters of an inch longer than traditional all-mountain bikes. This is offset by a chainstay length that’s short. So stubby, in fact, it’s a half-inch or more shorter than a comparably sized 26-inch all-mountain bike. Pivot also went with a 66-degree head tube angle that optimized the standover height and also gave the Mach 6 a 13.6-inch bottom bracket height — low, again, for 26-inch standards.
This places the BB below the axles and settles the Mach 6’s center of gravity within the rolling stock (like 29ers) and not on top (like 26ers). The long top tube, low center of gravity, and short stays perfectly balance high-speed stability with the liveliness that new-school riders crave. With geometry sorted, Pivot naturally went with the venerable DW-Link suspension design, but with a big change.
We’ll spare you the “climbs like an animal, descends with authority” rhetoric and dive into what makes this DW-Link better than previous generations. The new Mach 6’s upper linkage eliminates the rear shock bushing, and instead, Pivot replaced it with two large Enduro max cartridge bearings and a clevis. This not only eliminates a quick-wearing maintenance headache and source of stiction and slop, but it also opened up the opportunity to work around seat tube interference problems that haunt other multi-link designs and permit those cockle-warming, stubby stays.
It’d be a shame to cover all these Mach 6 merits and ignore the carbon magic that Pivot placed into this frame, which is the reason that this bike comfortably weighs in under the 29-pound mark. From the Mach 429 to the 5.7 to the LES, Pivot’s been leading mountain bikes into the carbon realm. And given its stack of accolades, along with numerous wins in competition, it’s clear that Pivot is onto something. This is due to finite element analysis, as well as real-world testing. The result is a compact carbon fiber frame that optimizes the ratio of strength-to-weight without compromising stiffness.
Now it’s our turn. Like with all of our Featured Bikes, we went to town on the perfect spec. The Mach 6 features a FOX FLOAT X CTD to control rear movement, and that shock is complemented by a 160mm-travel RockShox Pike RCT3. It’s also equipped with a 15mm thru-axle, and there’s a 12x142mm axle at the rear. Moving on, one of the biggest contributing factors to this bike’s drool factor is ENVE’s new M70 Thirty 27.5-inch carbon wheelset.
The wheels are comprised of DT Swiss 240 hubs with the ultralight, and mega stiff, ENVE M70 Thirty 27.5-inch carbon rims. This combination, along with a slew of patented production processes, allows ENVE wheels to boast the highest strength-to-weight ratio on the market. And it’s not just the half-pound in weight savings of ENVE’s wheels that make them the desirable upgrade they are — it’s the carbon ride quality, too. Wrapping the rims are fast-rolling Maxxis High Roller II EXO tubeless tires.
Turning the rear wheel is a SRAM XX1 GXP crankset with a 32t chainring. This joins an XX1 11-42t cassette through an 11-speed XX1 chain. Controlling the sole derailleur is an XX1 shifter, which shares handlebar real estate with the powerful XTR Trail brakes. We spec’d them with 180mm front and 180mm rear IceTech rotors. The handlebar is ENVE’s carbon Downhill, which is supported by an ENVE stem. Rightfully, this trail weapon is spec’d with a RockShox Reverb Stealth dropper, which has a WTB Rocket V SLT perched atop of it.
The Pivot Mach 6 Carbon Featured Bike is available in five sizes from X-Small to X-Large and in the colors Electric Blue, Stealth Carbon, and Matte Black/green.