The world’s widest aero wheels, significantly improving the aerodynamics of big road and gravel tires from 35mm WAM to MTB tires.
HUGE INNER WIDTH
At 29mm, the Discus 45 | 40 has by far the widest inner width of any (aero) gravel rim. That means less tire flop, so your cornering is more precise as the tire doesn’t roll over the rim’s edge. A big inner width also means you can run a lighter, narrower tire for the same WAM.
HOOKED ON SAFETY
Hookless designs save a few grams and are a good choice for low-pressure applications (such as our 650b DiscusPlus wheels). But at higher pressure, hooked rims provide additional safety. Yes, it make manufacturer more complicated and expensive, but it’s the correct engineering solution.
SAFETY RIDGE
With tubeless tires, rolling resistance is lower and flats are very rare. But when you do flat your road or gravel tire, a safety ridge keeps the tire on the rim for safety and to avoid damage (they're often skipped to save some weight & make manufacturing easier but again, we relish the challenge).
CARBON-TI HUBS
Carbon-Ti makes some of the lightest and most sophisticated hubs in the bike industry, right here in Italy. We’ve used them for a long time on our own wheels and decided that with the Discus 45 | 40 LTD being the ultimate wheels, they deserved the ultimate hubs.
SEALANT-RESISTANT
You may have heard of wheels destroyed by aggressive sealant. That’s why we use chrome-plated brass nipples (much more durable than alloy) with stainless steel washers & spokes. For best results, we recommend avoiding alkaline sealants with ammonia or sodium hydroxide.
SPECIFICATIONS
Rim Size |
ETRTO 622 x 29c, (28”/700c) 40mm wide, 45mm deep |
Rim Spec |
Tubeless-Ready Clincher, specific angle drilling |
Rim Material |
Unidirectional carbon - ultralight layup |
Spokes |
Sapim CX-Ray or D-Light Straight-pull, stainless steel. black finish, double butted, 24 Front/24 Rear |
Hubs |
Carbon-Ti Hubs |
Nipples |
Sapim chrome-plated brass |
Front Hub Spec |
Thru-axle 100x12mm |
Rear Hub Spec |
Thru-axle 142x12mm |
Wheel weight (+/- 5%) |
1665g |