You can trust Cyclingnews
Our experts spend countless hours testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.
Image 1 of 11
The Zipp-made rims are similar to those used on the 303 but without the aero-enhancing dimples and with a slightly heavier 'pavé' build.(Image credit: James Huang)
Williams Cycling hits another one out of the park with its carbon-rimmed Wheel System 38.(Image credit: James Huang)
Braking in dry conditions was good when paired with SwissStop Yellow King pads.(Image credit: James Huang)
The alloy freehub body is easily swapped between Shimano/SRAM and Campagnolo.(Image credit: James Huang)
Three steel pawls engage simulataneously under power. (Image credit: James Huang)
We don't have a weight for the front hub but its minimal appearance suggests it's pretty light.(Image credit: James Huang)
The rear hub uses an oversized aluminium axle.(Image credit: James Huang)
External nipples require bigger holes in the rim but they're easier to service. Williams also went with brass nipples for durability.(Image credit: James Huang)
The front wheel is radially laced…(Image credit: James Huang)
…while the rear uses a two-cross pattern on both sides. (Image credit: James Huang)
The included skewers feature titanium shafts and carbon levers.(Image credit: James Huang)
Williams Cycling's Wheel System 38 is not only light and cheap, but