DT Swiss C1800 Spline Disc Brake Wheel - Rear

The DT Swiss C1800 Spline Disc Brake Wheel - Rear is an alloy road wheel built on DT Swiss's Cross Road platform, which means it's engineered for more than smooth tarmac. The 23mm-deep, hooked aluminum rim measures 22mm internally and 26mm externally, wide enough to properly support today's larger road and gravel tire widths without the tire ballooning past the rim's edge. That width also lets you run lower pressures than a narrow-rim wheel would allow, which translates to better traction and a calmer ride over chip-seal, seams, and rougher pavement.

At the core is the DT Swiss 370 hub, built around the brand's Ratchet LN 18 freehub system. Instead of a handful of pawls engaging one at a time, the Ratchet design uses two full-circle discs with teeth that engage simultaneously across the entire ring. The practical result is quick, reliable pickup out of corners and off the line, with an engagement system that's simpler to service than traditional pawl-and-spring designs. The hub is laced to the rim with 24 DT Aero II straightpull spokes, hand-built rather than machine-laced, which keeps tension even and the wheel true over the miles.

This rear wheel is set up for modern road builds: a 12x142mm thru-axle for a stiff, precise connection to the frame, Centerlock rotor mounting for fast disc changes, and an XDR freehub body for direct compatibility with SRAM's 12-speed road and gravel cassettes. It's tubeless compatible as well as clincher-friendly, so it fits into a setup built around lower rolling resistance and pinch-flat protection, or into a more traditional tube-and-tire approach if that's what you're running. At 935 grams for the rear wheel alone, it's not the lightest wheel in DT Swiss's lineup, but that weight buys durability — this is a wheel meant to be ridden hard and rebuilt rather than babied.

Where the C1800 Spline earns its keep is versatility. It's happy carrying you through a century on smooth pavement, but the wide rim, straightpull spoke build, and Cross Road pedigree mean it doesn't flinch when the route turns to chip-seal, hardpack, or a light gravel detour. Riders building an all-road or endurance road bike who want one wheelset that can handle group rides during the week and a muddy cyclocross race on the weekend will find this wheel does both without complaint. At a 264-pound system weight limit, it's built to handle a wide range of riders and loaded setups, including gravel bikes carrying frame bags or light bikepacking gear.

For riders who want dependable, serviceable hardware over a marginal weight savings, the DT Swiss C1800 Spline rear wheel is a straightforward, well-built option. It's not chasing podiums on the scale — it's built to be laced up, ridden in all conditions, and trusted to keep spinning true.