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 AR40

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.

Product Details
Ultimate versatility for the on and off-road rider
1515g Wheelset Weight Avg. (+/- 3%)
Inner Rim Width: 25mm
Aero optimized tire size: 27mm*
Tested and qualified to ENVE's gravel standards
For Use With Tubeless Tires Only
*Tire must be Tubeless and listed as "Approved/Recommended" on ENVE's Tire Compatibility Page.

Build Specs
Spokes - Sapim CX-Ray J-Bend
Hub - ENVE INNERDRIVE - Foundation
Hub Spacing - Rear 12x142
Nipples - Alpina Nylock Brass
Spoke Tension - 120kgf
Brake Type - Centerlock

Dimensions
Effective Rim Diameter (ERD) - 579mm (+/- 3mm)
Internal Rim Width - 25mm
Sidewall Width - 3.6mm
Pinch Flat Technology - Wide Hookless Bead
Hole Count - 24h
Depth - 40mm
Tubeless Tape Width - 29mm
Tubeless Valve Length - 61mm
Spoke Tension - 120kgf
Brake Type - Centerlock
Spacing Rear - 12x142

Weights
Rim Weight - 425g
Wheel Weight - 825g Rear
Wheelset Weight - 1515g (Includes Tape and Valves - HG Freehub)

Tire Optimization
Recommended Tire Size - 27 / 50mm
Minimum Tire Size - 27mm *
Maximum Tire Pressure for Min. Tire (psi | bar) - 80 psi | 5.5 bar