Asymmetrical construction ergonomically conforms to the foot’s anatomy for a best in class fit. Powered by a micro-adjustable BOA® IP1 dial in an Overcurve pattern, the R4 features a staggered collar that wraps around the ankle, tracing the natural alignment of the ankle bones to maximize comfort.
Resilient, polyurethane-laminated material is combined over a comfortable mesh to reduce energy loss and provide long-lasting foot support where it’s most needed.
Suited to aggressively forward aero riding positions, the moderately stiff R4 outsole and closer-to-the-heel cleat placement strikes a balance between comfort and pedaling efficiency while reducing knee compression.
| Gender | Unisex |
|---|---|
| Cleat compatibility | 3-bolt |
| Closure type | BOA |
| Sole material | 90% Nylon / 10% Polyethylene |
| Upper material | 85% Polyurethane Film / 10% Fabric / 5% Plastic |
| Liner fiber content | 100% Fabric |
| Bag included | No |