ENVE COMPOSITES M5 PRO REAR DISC BRAKE RIM

Design and construction

The M-Series rims share three ideas. The spoke holes are molded, not drilled, so the carbon fibers run unbroken around each hole and the rim keeps its strength where a drilled rim is weakest. The profile is shallow, about 20mm, which is where the compliance comes from; a deep carbon rim is stiff in every direction, and the designers decided a mountain rim should give a little vertically. And the bead wall is wide and blunt on the newest generation, which is how the company cut pinch flats and rim damage compared with its earlier rims.

The M5 applies all of that at cross-country weight: 27mm inner width for 2.2 to 2.4in tires, the lightest layup in the range, external locking nipples and standard J-bend spokes. Front and rear versions differ in layup and, on some sizes, width.

How it rides

An M5 wheel is the definition of a race wheel: it accelerates instantly, it is laterally stiff enough to hold a line through a rooty corner, and the shallow profile takes the edge off chatter in a way that older, deeper carbon rims never did. It is light enough that a full-suspension XC bike on M5 wheels feels like a hardtail on climbs.

The M5 is a cross-country and down-country rim. For trail riding on bigger tires the M6 is wider and tougher; for enduro the M8.

Specifications

This listing

This is the 29in listing of the M5, 24h, about 360g, 27mm inside, 20mm deep, disc. Pick the size that matches your frame; the profile and construction are the same across the range.

This is the disc-brake M5: plain sidewalls, no brake track to wear, a touch lighter. It fits any disc-brake bike and it is the version most of our customers now build; the rim-brake version is a separate listing.

Sizes, fit and compatibility

The ENVE Composites M5 Pro Rear Disc Brake Rim comes in the drillings listed on this page. It is a disc-brake rim. We build the M5 on the brand's own hubs, Industry Nine Hydra and SOLiX, DT Swiss 240 and 180, Chris King MTB and Hope Pro 5 hubs, usually with Sapim CX-Ray, Laser or D-Light spokes or DT Aerolite and Competition, and brass or alloy nipples.

Tire range on the M5 is 2.2 to 2.4in, tubeless-ready tires only on the hookless bead. Give the configurator your bike type and weight; it picks a sensible spoke count and lacing pattern, which you can override.

Put it in a custom wheel

Build a custom wheel around the ENVE Composites M5 Pro Rear Disc Brake Rim — the link drops you into our Custom Wheel Program with this rim pinned, ready for you to choose the rest. It is set up for mountain bike and MTB single-speed builds.

Spoke head is decided by the hub, not the rim: this rim builds equally well with J-bend or straight-pull spokes, and the configurator only offers the spokes that match the hub you pick.

Building it at ProWheelBuilder

ENVE makes the M5 in Ogden, Utah; ProWheelBuilder is an independent wheel builder in Georgia, not the manufacturer, and the factory warranty rides with the rim. Every M5 wheel we build gets spokes cut from the rim's measured ERD, is tensioned in stages with a gauge to the factory specification, stress-relieved and trued before it ships. Tubeless tape and a valve are fitted on request.

In the configurator you will only see parts that fit this drilling; combinations that are not made are struck through, and the price updates as you pick.