DT Swiss FR 541 - Industry Nine Hydra 2 Custom Wheelset Builder

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DT Swiss FR 541 Aluminum Rim

The DT Swiss FR 541 is a high-performance aluminum mountain bike rim built for riders who push their wheels hard. Designed specifically for freeride, downhill, bike park, and aggressive enduro riding, the FR 541 combines serious impact resistance with a relatively lightweight construction to create a dependable foundation for a hard-hitting custom wheelset.

DT Swiss redesigned the rim profile to improve durability and resistance to hard impacts while also increasing protection against pinch flats. Testing conducted with a leading tire manufacturer showed a 17% improvement in pinch-flat resistance compared to the previous-generation FR 560.

The FR 541 features a 30mm internal width, providing excellent support for modern aggressive mountain bike tires and allowing riders to run lower tire pressures for additional traction and control on rough terrain.

A welded aluminum construction provides a strong and precise rim joint, while DT Swiss’ PHR washer system increases the load-bearing surface around each spoke nipple. This helps distribute spoke forces across a larger area of the rim and reduces localized stresses for a strong, reliable wheel build.

Available in both 27.5” and 29” sizes, the FR 541 is also an excellent choice for mixed-wheel/mullet setups.

 

Key Features

 

• Heavy-duty aluminum construction

• Designed for freeride, downhill, bike park, and aggressive riding

• 30mm internal rim width

• 35mm external width

• Tubeless-ready tire interface

• Improved impact resistance

• 17% greater pinch-flat resistance compared to the FR 560

• Strong welded rim joint

• DT Swiss PHR washer system for improved spoke-load distribution

• Available in 27.5” and 29”

• 28- and 32-hole options available

• 570g claimed weight – 27.5”

• 605g claimed weight – 29”

• ASTM Classification 5

• Maximum system weight: 140kg / 309lb

• E-bike approved

 

Built for riders who hit harder, ride faster, and need a wheelset that can take the abuse, the DT Swiss FR 541 is an excellent choice for a durable custom gravity wheel build.

 

Industry Nine Hydra 2 Classic Rear Hub

The Industry Nine Hydra 2 Classic takes Industry Nine’s legendary high-engagement hub platform and makes it stronger, smoother, and more durable for modern mountain biking. Designed and manufactured in Asheville, North Carolina, Hydra 2 is built for everything from aggressive trail and enduro riding to downhill and full-power e-MTB use.

At the heart of Hydra 2 is an ultra-responsive 870-point-of-engagement (POE) drive system, providing engagement every 0.41°. The result is nearly instantaneous power transfer when you step on the pedals—especially noticeable through technical climbs, quick ratchet moves, and sections where precise pedal input matters.

Hydra 2 also receives major durability upgrades, including a 65% thicker axle, larger 6903 bearings, reinforced pawl pockets, improved sealing, and a refined drive mechanism designed to increase reliability while reducing drag. The Classic hub shell uses traditional J-bend spokes, making it an excellent choice for a premium custom wheel build while maintaining straightforward spoke availability and serviceability.

Key Features

• 870 points of engagement
• Ultra-fast 0.41° engagement
• 6-pawl Hydra 2 drive system
• 65% thicker redesigned axle
• Larger, durable 6903 cartridge bearings
• Improved labyrinth sealing system
• Reinforced pawl pockets for increased durability
• Classic J-bend spoke interface
• 32-hole drilling
• 12x148mm Boost spacing
• SRAM XD freehub
• 6-bolt rotor interface
• Approx. weight: 292g
• E-MTB compatible
• Made in Asheville, North Carolina

Choose the Hydra 2 Classic for your custom wheel build if you want exceptionally fast engagement, proven Industry Nine performance, easy-to-source J-bend spokes, and a hub designed to withstand years of aggressive riding.

Please allow 2-3 weeks for your custom wheels to be assembled, packed and heading your way!