Wheel and component manufacturer DT Swiss recently introduced a new wheel system that introduces several new technologies to their wheel line. Dubbed Spline, the new tubeless-ready wheelsets come in versions for cross-country, trail and enduro riding.
The XR 1501, XM 1501 and the EX 1501 are designed for cross-country, trail and enduro/all-mountain riding, respectively. All three models share the same 28-hole hubs and spokes. The difference between each model being the internal width of the rims: 20mm for cross-country, 23mm for trail, and 25mm for the enduro/all-mountain wheelset.
The hub shells are constructed from two pieces of forged aluminum. According to DT Swiss, this arrangement simplified the machining process while allowing more material to be shaved off the hub bodies.
The spline wheelsets use two-peice hubshells: the spline wheelsets use two-peice hubshellsCourtesy
The Spline’s two-peice hub shells are bonded together after machining
Inside the hubs are DT Swiss 240 internals with the 36-tooth Star Ratchet system, which provides 10-degree engagement. The wheels are compatible with both quick release and thru-axle systems thanks to easy-to-swap end caps.
All three Spline wheelsets use straight-pull DT Swiss Competition 14/15 gauge spokes laced to tubeless-ready rims. Rather than having eyelets on the rims, DT Swiss came up with what the company calls the PHR (Pro Head Reinforcement) system, which uses conical washers inside the rim that work in conjunction with the nipple – much like a ball and socket joint – to align the spoke with the rim and hub.
The prolock nipples use a splined interface to aid in wheelbuilding and an internal washing to better align the spoke from the hub to the rim: the prolock nipples use a splined interface to aid in wheelbuilding and an internal washing to better align the spoke from the hub to the rimCourtesy
The washers also spread the spoke’s load over a greater area of the rim, which should lessen the risk of cracks forming along the spoke bed
650b (27.5in): 1,470g
650b (27.5in): 1,595g
650b (27.5in): 1,730g
No 29in version
The 26in and 29in Spline wheels are available now. The 650b (27.5) version is expected to be available in the coming weeks.