GA1R CONCAVE Forgeline Wheels

HARROP | GA1R Concave Forgeline Wheels

  • One-Piece Monoblock Design
  • Concave Profile
  • I-Beamed Spoke Technology
  • Extreme Stiffness
  • Extreme Fatigue Strength
  • Lightweight
  • Generous Brake Clearance
  • Forged 6061-T6 Aluminum
  • Customizable Finish Options
  • Legendary Forgeline Quality and Customer Service
GA1R CONCAVE Forgeline Wheels


The GA1R is a fully-forged one-piece monoblock wheel that utilizes much of the technology and design of our very successful GA3R racing wheel, including our new "I-Beamed Spoke" technology. The concave design of the GA1R not only looks great, but allows plenty of room for caliper clearance and extreme brake fitment, while the one-piece monoblock forging and I-Beamed spoke design yield a wheel that is extremely stiff with fatigue strength equal to our proven GA3R. And yet despite the strength and stiffness, for most applications and sizes, it also delivers a high-performance weight reduction - making it perfect for motorsports and racing applications!

The GA1R is produced using our traditional forging method from 6061-T6 aluminum. It is currently available in limited sizes and fitments, including center lock applications, but additional sizes and fitments are in development now. And just like any Forgeline wheel, the GA1R is available with fully customizable finish options.


  • The GA1R concave is available in sizes from 18x7.5 to 20x15
  • Powder coated or chrome finish with a polished, powder coated or chromed lip
  • Since each wheel is built to order, special features like custom offsets and a choice of centre finishes are available