The Alienation BMX OS20 rim is constructed from 6061-T6 aluminum with a double-wall design, pinned seam and machined sidewalls for a flat braking surface. OS20 rims have an oversized bead diameter at 451mm allowing them to roll faster and smoother than standard 20x1.75" rims while also being perfectly legal in the 20" race class.
Note: Designed for OS20 frames only. Requires use of OS20 specific tires and OS20 or 20x1-3/8" tubes.
The advantages of OS20:
- Rolls faster and smoother over bumps
- More stable at speed and in the air
- Larger contact patch for more traction off the gate and higher lean angles in the turns
The disadvantages of OS20:
- Slightly higher rotating weight
- Small adjustment period getting used to the way the larger wheel responds to rider input
Bead Diameter: 451mm
Height: 20.5mm
Width: 34mm
Seam: Pinned
Valve: Schrader
Weight: 16.3 oz
This product was added to our catalog on June 28, 2022