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M6 FAT

A carbon fat bike wheel with innovative features that make it the ultimate tool for high-performance fat bikers, whether in snow or dirt.

• Intended Use: Fatbiking
• Inner rim width: 85mm
• Recommended Tire Size: 3.8-4.5”
• Tubeless Optimized; Tube Compatible

Descending
Climbing
Impact Toughness
Compliance

These are some extremely super nice bits for your fat-bike… I wouldn’t hesitate to pull the trigger.

Fat-Bike

Technology

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APPLICATION SPECIFIC DESIGN

Each rim and wheel model in the ENVE M Series is specifically designed for a refined application specific ride experience.

Paying tribute to the original M Series, the M5, M6, M7, and M9 Series follow the original M Series descent to climb ratios that are used to help you the rider align your ride preferences with the appropriate M Series wheel for you.

We tune each M series wheel model to the intended application by tuning everything from hole count to the very carbon laminate used to create the rim’s structure.

Hole Count

Just as one rim doesn’t serve all applications equally, the same goes for the actual number of spokes required to optimize the ride quality and experience. As such, the M525, a rim specifically designed for XC racing on short travel bikes features 24 spoke holes which saves notable weight and adds compliance for long hours in the saddle. On the other end of the spectrum the 32 spoke hole M9 Series and M7 Series wheels need to survive repeated intervals of descending down technical terrain at sensory numbing speeds. In the middle, the M6 Series wheels feature a 28-hole count.

ENVE’s patented Molded Spoke Hole Technology offers a variety of benefits that ultimately result in a more durable and reliable carbon fiber rim and wheel. Visit Why ENVE for more details.

Full Carbon Laminate

At ENVE, we use only the best materials in the construction of our rims. In this case, 100% unidirectional carbon fiber. Over the years we have developed and identified specific construction methods, resin systems, and manufacturing techniques that best serve the mountain application. The result is that each rim in the M Series, while sharing in pedigree, has a dedicated laminate to ensure the best on-trail performance. As an example, the forces inflicted upon a wheelset by a trail rider on a 130mm bike are very different than the forces exerted on a wheelset used for downhill racing on a 200mm bike. Therefore, the laminate is optimized to create a structure that achieves the desired impact resistance, stiffness, and compliance.

Wide Hookless Beads

ENVE Wide Hookless Bead technology is found exclusively in the M Series 525, 630, 635, and 640 model wheels where weight savings is valued over ultimate high impact and pinch flat durability.

As carbon rims have become hookless and increasingly more durable, we have transitioned from rim failures to tire failures. Wearing a tire tread down to the casing is a thing of the past as most tires are lucky if they survive 50 miles of aggressive riding over obstacle laden terrain. While destroying an expensive tire on a weekly basis isn’t affordable, it’s a complete interruption of flow, and an utter buzzkill with a flat tire, regulated to the side of the trail.

ENVE’s wide hookless bead is the result of 2 years of carbon mountain bike rim development to address this above scenario. The result is a rim shape that features a wider leading edge of the hookless bead. This broad surface creates a more forgiving platform on which the tire can bottom out, and proves extremely effective in reducing the likelihood of “pinch” or “snake-bite” style flat.

In addition to greatly improving tire performance and reliability, the wide hookless bead design beefs up the leading edge of the rim and allows for greater impact resistance.

ENVE Wide Hookless Bead (Patent Pending) delivers:
• 60% improvement in pinch flat resistance over other hookless rims
• Ability to run lower tire pressure and improve traction and rolling resistance
• The option to run lighter weight tires if desired
• A more forgiving buffer between rim and trail
• Greater impact resistance

from the journal

How to Choose a Mountain Bike Wheel

ENVE M5 SERIES – THE CROSS COUNTRY WEAPON M5 – 50 percent down, 50 percent up They’re the world-championship-winning cross country wheels with the performance and technologies that place them at the pinnacle of the lightweight mountain wheel market. The M525 is a no-holds-barred, uncompromising XC weapon that was designed to create the best riding […]

1166 Prototypes – The M Series

If that number seems extreme or exaggerated to you, you’re not alone, we think that it sounded like a lot as well when our manufacturing team shared this data. At ENVE, every rim we manufacture has an accompanying “Traveler.” Think of a Traveler as a rim’s genealogy and birth certificate. Each rim has one and […]
WHAT OFF SEASON?

For many, fat-bikes are the ultimate bicycle. With the ability to tackle any trail, through any weather environment, fat-bikes keep the fun rolling all year round. This wheelset brings the ENVE M Series legacy to your all terrain ride and delivers performance in the snow, sand, and dirt. Lighten your fat-bike, and cover more trail than ever before with confidence and without limitation.

THE RIM’S STEEP WALLS SHED SNOW AND MUD, A FEATURE THAT LETS YOU RIDE in deep conditions without heavy buildup.

For those who ride their fat-bikes year round, in all coniditions, the M685 delivers. 

description

The M685, like all M Series products was designed and developed from the ground up to meet application-specific ride quality and performance metrics, in this case, fat biking. The M685 rim weighs in at 600g and is the widest option in the M6 series family of wheels. The M685 meets M6 series performance criteria terms of impact toughness, and durability. As such, the M685 meets ENVE’s durability standards for trail riding, and is equally at home in the dirt as it is the snow. Like all M6 series wheels, the new fat bike wheel features ENVE’s patented Wide Hookless Bead anti-pinch-flat technology that has proven to reduce the likelihood of pinch-flatting tubeless tires by upwards of 50%.

We developed the new M685 rim and Fat fork to deliver a better ride experience for performance-oriented fat bike riders. In the discovery phase of this project, we identified the need to keep the rim weight as low as possible without compromising terrain applications, and for a shape that helps shed snow and mud. When we rode the lightest weight rims on the market, their shallow and flat surfaces led to snow and mud accumulation that often added pounds of weight to each wheel. This insight led us to the M685’s rim shape which features steep sidewall angles and a deeper cross-section. This rim shape sheds snow more easily keeping the weight low in all trail conditions.

The M685 also features an ENVE first, asymmetric molded spoke hole design that accommodates for the wide bracing angles created by fat bike hub spacing. The asymmetric internal spoke hole design keeps the spokes properly aligned and as far from the snow as possible allowing for a rim designed with steep sidewalls that aid in preventing snow build-up.

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