H Plus Son: SL42
The SL42 rim is the original 42mm high rim that took us over a year to develop. Like Formation Face, SL42 owes its stiffness and aerodynamics to 42mm profile height. The two models share the same lightness, reduced to around 615 grams (plus or minus 15 grams) using the G609 aluminium alloy which is also 30 percent stronger than the 6061 aluminium alloy used in standard rim manufacture. SL42 features a machined side wall for use with rim brakes.
H Plus Son are globally recognised as the producers of some of the finest bicycle wheel rims available. Incredibly, they are able to combine stunning looks with unprecedented durability.