The “#1” in R1 Concepts, fools many people into thinking it’s RL Concepts or RI Concepts (Ri Concepts.) It’s not the people fault, because we know the #1, also looks like the letter “L” and “I.” Also, many of us forget the “Concepts” in “R1 Concepts” and use R1 brakes – R1 rotors or even RL brakes – RL rotors or Ri brakes – Ri rotors. So remember, “R1 Concepts,” your #1one stop brake shop.