The AR40 is the latest addition to the Foundation lineup. Featuring an aerodynamically optimized 40mm rim depth front and rear with a 25mm internal rim width, the AR40 is designed to deliver ultimate versatility for the road ride and racer looking for performance on and off-road.
| FRONT | REAR | |
| Spokes | Sapim CX-Ray J-Bend | |
| Hub | ENVE INNERDRIVE - Foundation | ENVE INNERDRIVE - Foundation |
| Hub Spacing | Front: 12x100 | Rear: 12x142 | |
| Nipples | Alpina Nylock Brass | |
| Spoke Tension | 120kgf | |
| Brake Type | Centerlock | |
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