These wheels are said to be 1380 grams in weight (less Q/R), the label on the side of the rim says so, but the set we have come in at slightly less, so no complaint there! The rims are made by a carbon and alloy laminating process, this keeps the weight down and maintains the braking performance without having to change brake blocks for special carbon pads as the braking surface alloys, although these are mostly carbon rims.
The low weight is achieved with the reduced thickness of the alloy rim wall from 1.3 mm to 0.7 mm, then the carbon fibre is bonded to the alloy for rigidity, weight-saving and strength. The extra carbon reinforcing around the spoke holes strengthens the wheels so that there will be no worries about heavy riders or hard conditions.