It’s the ultimate XC and marathon race bike that is at home on everything from the most demanding world cup XC race course to your favourite trail. With a 24 hour endurance world championship under its belt, and multiple MTBR best XC full suspension bike awards, it’s easy to see why the Mach 4 has garnered such an incredible reputation. For starters, the Mach 4 is a highly optimized frame design with a stiffness to weight ratio that puts all other XC bikes to shame.
With race team bikes being built as light as 20 lbs (9kg) and our own XX-1 build coming in at 21.8lbs (9.8kg), you can build a Mach 4 for yourself that will crush the competition on the race course and on the scale. Featuring 4” (100mm) of the most controlled dw-link suspension travel in the sport, the Mach 4 can out climb, out sprint, and out descend any bike in its class. With incredible square edge bump performance and unrivalled climbing traction, the Mach 4 is the most well rounded race bike as well.
With superior suspension and pedaling performance, traction and unrivalled frame stiffness, the Mach 4 is designed to take you to the top step of the podium or simply make your ride that much more fun. In either case, you will be doing everything faster aboard the Mach 4.
Bottom Bracket: Press Fit 92mm wide bottom bracket
Seatpost: 30.9mm post
Headset Compatibility: 1.125 to 1.5 tapered Zero Stack.
Rear Travel: 100mm
Shock: Pivot specific, custom tuned Fox Float CTD shock technology:
Shock Length: The Mach 4 XX-Small and X-Small size frame use a 6.5” length X 1.5” stroke. The Small through X-Large frame use a 7.25” length X 1.75” stroke. All bikes use 8mm hardware and the spacer width is 86” (22mm) and 1.4173”(36mm)
Dw-link® Suspension: One of the primary benefits of the dw-link® suspension design is position-sensitive anti-squat. Put simply, the dw-link® is the first and only suspension design that takes into account the rider’s weight and position on the bike (i.e. the rider’s centre of mass). When you stand up to sprint or shift your weight back to climb, your weight along with the force on the pedals is the dominant force on the suspension. This bob or “squat” caused by the rider’s mass shift is a good part of the reason why ProPedal, SPV, Brain, lockouts, and a host of various other “platform damping” solutions exist: to resist suspension bob and squat. With the dw-link®’s anti-squat design, the dual suspension links are positioned in such a way that your weight shifts do not result in unwanted suspension movement or “squat” under power. This allows for tuning of the rear shock with lighter valving, making the bike free to absorb bumps and follow the terrain better.
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