A highly reliable and durable aluminium wheel set full of DT Swiss quality now with Ratchet LN Technology for extended eMTB tours.

When motor assistance and leg power meet, the range of terrain a bike can conquer grows almost exponentially. The H 1900 SPLINE is designed for this, now upgraded with the famous DT Swiss Ratchet technology. The Ratchet LN system distributes the combined forces from the rider and the motor over a larger area than the previous pawl freehub systems, increasing the systems’ durability thanks to lower load peaks. The 370 hub enables full power transmission to the ground with reinforced hybrid spokes laced to a resistant aluminium rim. 

Redesigned hub shell: Due to the battery and motor, eMTBs tend to weigh more than traditional MTBs of the same category. eMTBs are not ridden less hard; in fact the opposite is often the case, as tours are longer and the load on the components increases. In addition, the transmitted torque of the motor is higher than with conventional MTBs. The hub shell was completely redesigned for the new hybrid generation with these points in mind.

Ratchet LN: Equipped with the 370 hub featuring the Ratchet LN freehub system. This system allows for uniform load distribution over a large surface, where the whole front face engages, creating much smaller point loads. This provides the legendary reliability of the Ratchet System hubs. These ratchets are optimised for e-bikes: Made of hardened steel and equipped with 18 teeth, they offer high durability.

Resilient rims: Modern eMTBs are developed to go faster and harder. Our Hybrid wheels are proven to support a maximum system weight of 150 kg. DT Swiss rims have additional material right where it matters. They have reinforcement on the external central part of the rim, because this is where the biggest loads are when the bike supports its and the rider’s weight. The forces exerted on the wheels come from the top and go down vertically to the ground. That is to say that the spokes which are on the lower part at the time of the rotation, support most of the weight. Therefore, the profiles of the rims have not changed and remain the same as the ones that have been tested and approved on the most challenging trails. These rims are available in a variety of internal widths so that every rider can select the features they want and get the best grip and traction possible.

Reinforced Spokes: When it comes to dynamic stress, the same logic for the rim also applies to the spoke head: under high loads, the spoke heads experience a continuous dynamic load. In order to address this potential weak spot, DT Swiss has reinforced the spoke head to 2.34 mm to ensure resistance, even at a high total system weight. The output tension of the spokes also plays an important role. It is therefore essential that residual spoke tension is maintained in every riding situation, in order to keep the peak load low on the individual components of the wheel. This makes precise and knowledgeable wheel building of paramount importance. All DT Swiss wheels are assembled 100% by hand in order to pay particular attention to the tension of the spokes.

 

• Tubeless ready (supplied taped and with DT Swiss valves)
• Wheel size: 29"
• Inner width: 30mm
• Rim: Aluminium, Hooked / Crotchet tubeless TC
• Spokes: DT Swiss Hybrid 1 straight pull
• Valve type: Presta
• Front axle system: 15 x 110mm (boost)
• Rear axle system: 12 x 148mm (boost)
• Brake type: centre-lock disc
• Hub type: DT Swiss 370 with Ratchet LN 18
• Freehub type: Shimano Microspline
• Recommended system weight (max): 150kg
• Please note: this wheelset was originally destined for production bikes and as such is delivered OE 
• Weight: 2223g (Front: 1028g / Rear: 1195g)