• 
  UB Machine
  http://www.ubmachine.com
  Chassis components
• 
  Ultra Cool Brake Fans
  http://ultracoolbrakefans.com/main/
  Hub mounted brake fans
• 
  Ultra-Lite Brakes
  https://ulbrakes.com/
  Titanium and coated racing brakes and rotors
• 
  Ultra-Shield Race Products
  http://www.ultrashieldrace.com
  Tear-offs and helmet accessories
• 
  UMI Performance
  http://www.umiperformance.com/
  Suspension components and sway bars
• 
  Unisteer Performance Products
  http://www.unisteer.com/
  Ring and pinions and steering components
• 
  US Gear
  http://www.usgear.com/
  Performance racing and street ring and pinion gear sets