Synchro Aero 4E cycling shoe

Synchro Aero 4E: The Aerodynamic Road Shoe Optimized for the Technical Triathlete

The Synchro Aero 4E is designed for the athlete who prioritizes aerodynamic efficiency and foot stability above all else. While a single-strap shoe like our WorldCup is the undisputed leader for raw transition speed, the Synchro Aero 4E is engineered for the "on-the-rivet" performance of the bike leg itself.

By combining a dual-dial closure system with a medial-zip aero shroud, this shoe delivers the precise, locked-in fit of a premium road shoe, with the drag reduction needed for non-drafting triathlons and time trials.

Engineering Strategy: Aero Priority

1. Drag Reduction via Medial-Zip Shroud

In a sport where seconds are won over 40km to 180km, the turbulence caused by dials and hardware matters. The Synchro Aero 4E features a smooth textile cover that encapsulates the closure system. To further refine the profile, we relocated the zipper to the medial (inner) side, removing it from the primary airflow and ensuring a cleaner leading edge on the shoe's lateral side.

2. Dual-Dial Fixation for Maximum Leverage

For daily road training and high-torque racing, foot security is paramount. The dual-dial system allows for independent tensioning of the forefoot and the ankle. This provides a level of mechanical "fixation" that single-strap shoes cannot match, preventing internal foot slip during out-of-the-saddle efforts or high-cadence intervals.

3. The "Triathlon-Ready" Road Shoe

While this is a performance road shoe first, it is not "road-exclusive." We have integrated specific functional details to ensure it remains viable for competitive triathlon:

• Fly-Mount Ready: Built-in webbing loops allow you to use rubber bands to keep the shoes horizontal on the pedals.

• Reinforced Heel Pull: A rugged, oversized loop allows for a secure grip when pulling the shoe on at speed, a feature missing from 99% of aero road shoes.

4. 4E Carbon Chassis: The Foundation

Built on our proven 4E flat-bottom carbon sole, the Synchro Aero 4E offers a stable, ultra-stiff platform. The flat geometry increases the contact area with the pedal, reducing "hot spots" and ensuring that every watt of energy is transferred directly into the drivetrain.

Technical Specifications

• Chassis: 100% High-Modulus Carbon Fiber (4E Flat-Bottom)

• Aero Cover: Medial-zip textile shroud for laminar airflow

• Closure: Dual micro-adjustable dials for precision fit

• Transition Features: Medial fly-mount loops; high-tensile heel loop

• Colorway: Magical White

• Cleat Compatibility: Standard 3-bolt road pattern

Commandes hors de l’UE:

Notre entrepôt est situé en Europe et tous les prix affichés sur notre boutique en ligne incluent la TVA européenne. Toutefois, si vous choisissez une livraison en dehors de l’Union européenne, aucune TVA ne sera facturée lors du paiement — le montant à régler sera donc inférieur au prix affiché.

Veuillez noter que des droits de douane et des taxes locales peuvent être exigés à la livraison par les autorités de votre pays. Ces frais ne sont pas inclus dans le total de votre commande et sont à la charge du destinataire.

Les taux et conditions d’importation varient selon les pays. Nous vous conseillons de contacter les autorités douanières locales pour connaître les tarifs applicables dans votre pays avant de passer commande.