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ENVE M685 Fat Bike Rim


The ENVE M685 Fat Bike Rim is designed to improve the fat bike ride experience with a low-weight, high-strength, crud-shredding design that's just as at home on the trails as chugging through wet dirt or tearing up the tundra... Read more

27.5" - 32H27.5" - 32H
SKU: EN256852733


The ENVE M685 Fat Bike Rim is designed to improve the fat bike ride experience with a low-weight, high-strength, crud-shredding design that's just as at home on the trails as chugging through wet dirt or tearing up the tundra.

Part of the M6 range of mountain bike wheels, the M685 is handmade from uni-directional carbon fibre and features an 85mm internal width and 26" or 27.5 size options to take your choice of high-volume, tubeless fat tyres.

But this isn't just a wider version of ENVE's other M6 rims, the M685 has been designed from the ground up to enhance fat bike riding. Compared to most fat bike rims, ENVE has given the M685 a deeper cross section and steeper sidewall angles to better shed mud and snow, which keeps weight low whatever terrain you're tackling.

However, the M685 does share the Wide Hookless Bead of the other M6 rims, a patented design for the rim's teardrop-shaped leading edge. When combined with the rim's overall cross section, the design helps dissipate impact force and reduces the chance of pinch flats by over 50%.

In a first for ENVE, the M685 features asymmetric moulded spoke holes designed to accommodate the wide bracing angle created by fat bike hub spacing. This ensures the spokes remain properly aligned and as far from deep terrain as possible, again helping to avoid the wheel weighing you down by holding on to excess mud or snow.

Weighing in at an impressive 600g, the M685 achieves the perfect balance of traction, weight and mountain bike durability for 3.8-4.5” tyres, meaning you can ride your fat bike with no limitations.

Key features:
  • Specifically designed for all-terrain fat bike use
  • Made from uni-directional carbon fibre
  • Designed and engineered for 3.8–4.5" tyres
  • Snowshed sidewall design helps reduce snow build-up
  • Reduced tubeless tape width needed for a perfect seal
  • Patented Molded Spoke Hole technology
  • Wide Hookless Bead design for puncture protection
  • 5-year Factory Limited Warranty, cover through ENVE's Incidental Damage Protection Programme
Rims are sold as single units and are packaged with the following:
  • Nipples
  • Tubeless kit
  • Warranty/information book

Image are for illustrative purposes only – rim only supplied. These rims can only be used with tubeless tyres.

ENVE Factory Limited Warranty

Coverage for the original owner against defects in materials and workmanship for the period of five years from the original purchase date. Product registration is required within 60 days of purchase. Second-hand owners are covered from the product's date of manufacture.

ENVE Incidental Damage Protection

This program provides a no-charge rim replacement for your first three years of ownership and a prorated replacement thereafter for damage inflicted upon your SES rim when racing, riding, or transporting your bicycle. Original owners only. Product registration is required within 60 days of purchase to be eligible for this program.


Rim Specification
Depth 45mm
Internal Width 85mm
External Width 94mm
Hole Count 32
Effective Rim Diameter 526mm
Recommended Tyre Size 3.8-4.5"
Clincher Specification (Tubeless Only)


Rim Weight (front/rear compatible) 600g


Known for the fastest, strongest and lightest handmade-in-the-USA carbon wheels, ENVE has had a spectacular rise to the top of the cycling world. Truly made for riders by riders, ENVE's product range of full carbon wheels, carbon stems, bars, seatposts and forks is the result of the team's desire to make the sport we love even more enjoyable. Meanwhile strong ties to the top levels of road cycling, mountain biking and triathlon mean pro feedback has helped hone ENVE's products into the ultimate performance upgrades. Read more about ENVE.


Founded by real cycling enthusiasts in 2004, our passion for elite performance runs through everything we do at Saddleback. Our team of dedicated roadies, mountain bikers and triathletes practice what we preach to bring you the finest cycling products and a superior service to match. We're the official UK home of Abbey Bike Tools, Castelli, Chris King, ENVE, HJC, Moots Cycles, Pivot Cycles, PUSH, Sidi, Silca, Sportful, Stages, Troy Lee Designs and Wolf Tooth.


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