The H+Son SL42 is the original 42mm deep-section rim that helped define modern track and urban cycling aesthetics. Developed over the course of a year, it offers impressive stiffness and aerodynamic efficiency thanks to its high-profile design.

Constructed from G609 aluminium alloy—30% stronger than standard 6061 alloy—the SL42 delivers strength without compromising on weight, coming in at approximately 615g (±15g). This makes it ideal for riders seeking a durable yet lightweight performance rim.

The SL42 also features a precision-machined sidewall, making it fully compatible with rim brake systems. Whether you're building a fast commuter, track racer, or urban fixie, this rim provides both form and function.