S&M Arc Rim (20″, 22″)

S&M Arc Rim

The S&M Arc is a double-wall aluminum rim featuring a custom extrusion with both sleeved and welded joint construction for increased strength and durability. Available in 20" and 22" sizes, the Arc rim is designed for street, park, and dirt riding where impact resistance and weight savings are both priorities.

Key Features

• Sleeved and Welded Joint – Dual joining method combines a sleeve insert with welding for superior strength at the seam, reducing the risk of joint failure from hard landings or side impacts
• Custom Extrusion Profile – Proprietary rim shape optimizes material distribution for strength-to-weight ratio and tire bead retention
• Double-Wall Construction – Two-layer design increases lateral stiffness and impact resistance compared to single-wall rims while distributing spoke tension more evenly
• 6061-T6 Aluminum – Heat-treated aluminum alloy provides durability and corrosion resistance while maintaining lighter weight than chromoly
• 36-Hole Drilling – Standard 36-spoke pattern allows for strong, reliable wheel builds with even spoke tension distribution

Technical Specifications

20" Version:

• Size: 20"
• Spoke Holes: 36H
• Material: 6061-T6 aluminum
• Width: 34mm
• Height: 17mm
• ERD (Effective Rim Diameter): 390mm
• Weight: 15.75 oz (447g)

22" Version:

• Size: 22"
• Spoke Holes: 36H
• Material: 6061-T6 aluminum
• Width: 34mm
• Height: 17mm
• ERD (Effective Rim Diameter): 440mm
• Weight: 18.45 oz (523g)

Compatibility and Ideal Use Cases

The S&M Arc rim is compatible with standard 20" or 22" BMX tires and requires 36-hole hubs for wheel builds. The 34mm internal width accommodates tire widths from 1.75" to 2.5", making this rim suitable for street, park, and dirt applications. The sleeved and welded joint construction makes the Arc particularly well-suited for riders who session high-impact terrain—large drops, concrete parks, or aggressive street riding—where standard welded-only rims may fail prematurely. The 20" size fits standard BMX bikes, while the 22" version is used on BMX cruisers and mini cruisers. Rim requires spokes, nipples, hub, and professional wheel building for installation.