H Plus Son SL42
H Plus Son say:
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 aluminum alloy which is also 30 percent stronger than the 6061 aluminum alloy used in standard rim manufacture. SL42 features a machined side wall for use with rim brakes.
- G609 alloy
If you want a deep section rim that really looks deep and you don’t want carbon; this is the rim for you. It comes with a machined sidewall. It looks seriously impressive. H Plus Son told me that you can put over 130kgf through these rims and that spokes will fail under the tension before the rim does. This is undoubtably a mean rim. They have used the G609 alloy which is 30% stronger than 6061 which has allowed them to get that weight down to just 615g whilst preserving strength. For a 42mm deep rim, that is pretty impressive.