The XC-workhorse in our portfolio, the XR 391, has been developed to create a snappy accelerating wheel. Therefore the focus was set on a low weight, which is the reason, why it has 25mm rim inner width. This contributes to a low inertia moment.
The XM 481 is our all mountain rim. Our goal was to develop a 30-mm wide alloy rim, which strikes the balance between weight and durability. Like the EX 511 the XM 481 got an ASTM ranking 4, but its max system weight is lighter (10 kg), at 120 kg. This difference comes from slightly thinner sidewalls, enabling to reduce the weight for efficient acceleration, around 50 g.
The EX 511 is one of the toughest rims out there, not just because of the welded joint, but also because of the specifically developed rim profile. The rim is designed for modern Enduro mountain biking. We shouldn’t communicate on the subject, since it wasn’t developed for that purpose, but some of the fastest downhill racers use it for racing – what we want to say: it is strong, damn strong! With its 30-mm inner width it’s wider than its sibling, the famous EX 471.
The 350 hub
The DT Swiss 350 is equipped with our famous Ratchet System. What makes the Ratchet System hubs truly unique, is the fact that all the teeth of the two ratchets engage simultaneously and create a large contact surface to transmit huge torque. The fact that the whole front faces engages, creates much smaller point loads. The result is the legendary reliability of the Ratchet System.
Thanks to the no-tool concept, the hub is very easy to maintain and the free hub body can be converted without the use of any tools.
For the new 1700 SPLINE the 350 got upgraded by a 36T Ratchet SL system (SL stands for super lightweight achieved by machined out ratchets). It reduces the engagement angle to 10 degrees, which we believe is the sweet spot in terms of reliability, weight and power transmission.
The competition spoke is one of the most versatile spokes in the DT Swiss spoke range. DT Competition gets its special strength from a specific cold forging process. This process has been developed and patented by DT Swiss, it is used to double-butt the diameter of the spokes. Oscillating hammers rotate around the wire.
As a result the spoke material is densified and its diameter is reduced. This cold forging process hardens the material while ensuring that it retains its good ductility. The result is a spoke with a slim butted section for low weight and a strong head and thread for durability. This leads to an extremely high durability and furthermore, thanks to the thinner middle section, it is lighter than a spoke with a constant diameter of 2.0 mm.