Forgeline GS1R Mustang GT4 Wheel Set (18"x10.5") S197

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6,480.00 6480.0 USD 6,480.00

6,480.00

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Originally designed for professional racing teams competing in the IMSA Continental Tire SportsCar Challenge Grand Sport (GS) class, the Forgeline GS1R combines the latest in advanced wheel technology, including one piece forged monoblock construction, motorsport engineered design, and I-beamed spokes. This wheel is engineered to withstand the rigors of top-level endurance racing with a 2100 lb street tire load rating and exceptional deflection stiffness. CorteX regularly use and abuse these wheels in wheel-to-wheel racing environments and highly recommend this wheel package to customers looking for one of the lightest and strongest wheels on the market. While we frequently use these wheels on the S550 chassis GT4 race car, this fitment is uniquely designed to bring the same level of motorsports excellence to the serious S197 customer. 

Available in a variety of sizes, finishes, and options, please call us for other options.


GT4 MUSTANG RACE WHEELS 18×10.5 - Fits all 2005-2014 Mustangs. 


Though made from the same forgings and similar design as the GA1R street wheel, the GS1R employs an open-lug center area for additional weight reduction and improved access to the lugs. In combination with a new chamfered outer lip (with fewer sharp edges for easier handling), this enables faster wheel changes and, depending on size and offset, can save an additional pound of mass from each wheel!

The GS1R is machined from a single forging of 6061-T6 aluminum. 

One-Piece Monoblock Design
Concave Profile
I-Beamed Spoke Technology
Extreme Stiffness
Extreme Fatigue Strength
2100 lb. Street-Tire Load Rating (per wheel)
Lightweight – Up to One Pound Lighter Than the Standard GA1R
Generous Brake Clearance
Forged 6061-T6 Aluminum
Recommended for track use only.
Legendary Forgeline Quality


Forgeline Motorsports manufactures the world’s finest premium forged aluminum custom performance racing wheels for the most discerning enthusiasts and the most demanding applications.

Forgeline wheels are machined from heat-treated 6061-T6 aluminum that is forged on a 6000-ton hydraulic press. This forging process aligns the grain structure, reduces porosity, and increases uniformity in the material, creating the highest strength-to-weight ratios and the most consistent quality. On average, our forgings are 40% stronger than cast aluminum.