The Alienation OS20 BMX Rim-Black rolls faster and smoother than a standard 20″ rim. OS2O is NOT 22. OS2O is 20, but bigger. There are two wheel sizes in the 20 category the 20 on Jr/mini bikes which uses the 451mm diameter wheel in narrow widths (for 20-1/8 & 20-3/8 tires), and the conventional 20 which uses the smaller 4O6mm diameter wheel but in wider widths (for 20×1.5″ & 20×1.75″ tires). OS2O is 451mm wheel diameter in similar widths as 406mm wheels. OS2O tires are not compatible with Jr/Mini sized rims, and OS2O rims are not compatible with Jr/Mini sized tires.

• Use: Race
• Material: 6061 T6
• Walls: Double
• Joint: Sleeved
• Weight: 462g
• Diameter: 451 (20)
• Drilling: 36
• Valve: SV
• Sidewall:
• ERD: 430
• Colors: Black

NOTE: You’ll need to purchase the OS20 tires and OS20 tubes to go with these rims.