ENVE Foundation AR40

The AR40s are designed as a true hybrid. With a 25mm internal rim width and gravel-rated durability, they are built to handle both smooth tarmac and rougher gravel paths with equal confidence.

A hookless bead design creates a more precise fit between the tire and rim, which improves impact resistance and reduces the risk of pinch flats. You must use tubeless-ready tires that are compatible with hookless rims, and you should always adhere to the tire manufacturer's maximum pressure recommendations, which are typically lower than traditional hooked rims.

The InnerDrive system uses an oversized 42mm ratchet mechanism designed to distribute load more evenly. This reduces stress on the bearings and internals, which translates to better long-term reliability and easier maintenance over the life of the wheelset.

These wheels use a standard Centerlock brake interface and 12x100mm front and 12x142mm rear thru-axle spacing. As long as your frame and fork match these common modern standards, they will be a direct fit.

Yes, the 40mm depth is wind-tunnel tested to balance aero efficiency with crosswind stability. It offers a tangible speed benefit on the road without becoming difficult to handle when the wind picks up.

Instead of drilling holes into the carbon fiber, which can compromise structural integrity, ENVE molds the spoke holes directly into the rim. This keeps the carbon fibers continuous around the nipple seat, resulting in a significantly stronger and more durable rim.