Dt Swiss Rr521 700 32 Db Vi Disc Tubeless Road Bike Rim. Looking for a bomb-proof rim for your Gravel, Cyclo Cross, or adventure bike? The DT Swiss RR 521 is your answer. This modern, 32mm deep and 20mm wide aluminum rim is built for durability and versatility. Its welded joint ensures a precise and stable connection, while the hooked, tubeless-ready design provides secure tire seating for your disc brake setup. With a high system weight limit of 130kg and included Pro Lock nipples for a long-lasting build, the RR 521 is the reliable foundation you need to widen your ride and explore with confidence. Looking for a bomb-proof rim to build up your Gravel, Cyclo Cross or adventure bike. Then it´s definitely worth taking a look at the new RR 521 rim. 32 mm deep and 20 mm wide this modern road rim, could have been classified as a Cross Country rim just a few years ago. Nowadays it´s just a great offer to widen your ride. With dropbars. Features:System weight:- The system weight is composed of the weight of the rider and his equipment, plus the bike with luggage.Welded:- Welded refers to a method used in making rims. In this case, the profile ends of the rim are connected by welding. This precise, stable and lightweight connection is used on all high-quality aluminum rims. This manufacturing process is the most expensive due to the effort involved, but it offers the most reliable connection. Hooked / Crotchet tubeless TC:- Hooked or crotchet refers to the shape of the rim flange. In this variant, the rim flange has a so-called hook. This supports the fixation of the tire bead and ensures safe function, also in high pressure use cases (>5 bar tire pressure). Tubeless refers to the ability of the rim to be used without a tube, but a tube set up is also possible.Brake Interface:- The advantage of the Center Lock system is that the disc brake attachment is made with one single lock ring, which facilitates assembly. On the other hand, an advantage of the IS-System (6 Bolt) is that in the event of a necessary repair on the trail, no special tool is needed for disassembly. Rim height:- In cycling, rim height significantly impacts the aerodynamics, agility and weight of the wheel. The general principle is the higher the profile of the rim, the greater the aerodynamic advantage, the lower the profile of the rim, the greater the response and better the handling when cornering and changing speed. Rim Diameter:- The 700c (622 mm / 29 inches) is the most common wheel size for road racing. The 650b (584 mm / 27.5 inches) wheel size is used in specific areas. Each wheel size offers unique advantages for different kinds of riding.Rim Inner Width:- DT Swiss offers MTB rims with inner rim widths of 20 - 76 mm. The right combination of tire width and rim width leads to ideal tire support. Better tire support reduces the risk of ´´burping´´ and therefore allows the tire pressure to be reduced. On the other hand, wider rims and wider tires also increase the weight of the wheels.Pro Lock:- Pro Lock is a thread lock function which prevents the spoke-nipple connection from loosening, allowing for extremely durable wheel builds. Specifications:- Net weight: 520 g - Recommended System weight max.: 130 kg- ASTM classification: 2- Material: Aluminium- Rim joint: Welded- Tire interface: Hooked / Crotchet tubeless TC- Brake Interface: Disc- Rim Diameter: 29´´ / 700C- Reference diameter ERD: 581 mm- Inner Width: 20 mm- Outer width: 24 mm- Rim Height: 32 mm- Number of holes: 24- Spoke bore rim: Non eyelet PHR- Valve hole: PrestaInclusive: - DT Pro Lock Squorx alu silver- Washer PHR. tradeinn Bikeinn