The Arch MK4 rear wheel is our most versatile wheel and the best available aluminum wheel for riders looking to push their limits on any trail. Up, down, and wherever the ride takes you, the Arch MK4 wheel has everything under control.

The M-Pulse hub combines the best materials and designs with an intelligent engagement system, built to roll smoothly for longer. The heart of the M-Pulse hub is the magnetic locking system, based on the innovative Project321 design and manufactured in a high-precision small-batch production. The M-Pulse freehub features six pawls equipped with neodymium magnets that engage with more force every 1.66° compared to traditional spring-based pawl designs, offering less resistance when coasting. With reduced friction and resistance. Stan's NoTubes offers a 5-year warranty on this convincing and durable technology!

Features:

• 28 mm internal width
• 31.4 mm external width
• ERD 561 mm, 2.5 mm offset (27.5”) / 600 mm, 2.5 mm offset (29”)
• Tape 30 mm
• Suitable for 2.2 - 2.5" tires
• Durable 6069 aluminum with welded joints and reinforced spoke bed
• The BST-Asymmetric provides a stronger, more balanced wheel construction
• New high-end premium M-Pulse hub
• MK4 front and rear wheels with the same diameter all have the same spoke length on both sides, front and back.
• 5-year hub warranty
• 3-year rim warranty
• 1-year crash replacement.