Forgeline GS1R

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  • This is a special order item, please contact Millaracing for availability before purchasing.

Vendor : Forgeline


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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.

Though made from the same forgings and similar design as our original 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. It is currently available in 17, 18, 19, 20, and 21-inch diameters with a range of widths and offsets. And just like any Forgeline wheel, the GS1R is available with fully customizable finish options. Note: This wheel requires special machining to fit our optional Open Lug Center Cap. If you wish to use the optional Open Lug Center Cap, then you must specify, when placing your order!

    • 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
    • Open Lug center will NOT accept a center cap. Recommended for track use only.
    • Customizable Finish Options
    • Legendary Forgeline Quality and Customer Service
  • 17" Standard Finish

    Size Price (per Wheel)
    17x8.5 $1495
    17x9.0 $1495
    17x10.0 $1495
    17x11.0 $1495
  • 18" Standard Finish

    Size Price (per Wheel)
    18x8.5 $1795
    18x9.0 $1795
    18x9.5 $1815
    18x10.0 $1815
    18x10.5 $1835
    18x11.0 $1835
    18x12.0 $1835
    18x12.5 $1835
    18x13.0 $1835
  • 19" Standard Finish

    Size Price (per Wheel)
    19x8.5 $1945
    19x9.0 $1945
    19x9.5 $1945
    19x10.0 $1965
    19x10.5 $1965
    19x11.0 $1965
    19x11.5 $1985
    19x12.0 $1985
    19x13.0 $1985
  • 20" Standard Finish

    Size Price (per Wheel)
    20x8.5 $1975
    20x9.0 $1975
    20x9.5 $1975
    20x10.0 $1995
    20x10.5 $1995
    20x11.0 $1995
    20x11.5 $2015
    20x12.0 $2015
    20x13.0 $2015
  • 21" Standard Finish

    Size Price (per Wheel)
    21x9.0 $2040
    21x10.0 $2040
    21x11.0 $2040
    21x12.0 $2070
    21x12.5 $2070
  • 22" Standard Finish

    Size Price (per Wheel)
    22x9.5 $2325
    22x10.0 $2325
    22x11.0 $2325
    22x12.0 $2350

All domestic orders will be shipped to the verified billing address associated with the customer’s credit card. In the event that the products need to be shipped to another address, Millaracing will verify the transaction with the customer by requesting a screenshot of our transaction on the customers online banking.

Millaracing strives to ship "In-Stock" orders within 48 hours of receiving the order. Shipping times may vary depending on the contents of your order. Millaracing does not ship partial orders unless requested by the customer, at which time additional shipping charges may apply. If you need your order by a specific date, it is important to contact us by phone so that we may assist you. All dates provided are based on estimates given by the supplier. Millaracing does not guarantee ship dates as delivery times are subject to change. All shipping times are based on our Monday through Friday business hours. Orders will not be shipped from our facility on Saturday or Sunday. Shipping Charges are non-refundable.

International Orders
Please be advised that your country may impose duty fees, or other taxes based on the product origin and/or value. These fees and taxes are based on your country's import policy, and may be imposed in addition to the purchase price and shipping/handling fees collected by us prior to shipment. All such fees and taxes are the sole responsibility of the recipient and any and all charges incurred by Millaracing will be charged to the customer. Millaracing is not responsible for such fees/taxes on returned items. If you are concerned about possible additional charges, please contact your local Import/Customs authority for more information. All charges, sales, returns, and exchanges will be calculated in US dollars. Millaracing is not responsible for fluctuations in currency value. International customers are responsible for understanding their country's international buying laws, and should be aware that all international purchases are subject to additional brokerage, duty or tax fees that are collected at the time of delivery unless otherwise noted by Millaracing. Millaracing is not responsible for these charges as we have no affiliation with tax systems set forth by international countries. If the consignee/receiver refuses to pay these additional charges at the time of delivery, Millaracing will instruct the shipping carrier to abandon the package. Abandoned packages are destroyed at the shipping warehouse at your local pick up facility. Millaracing will not be held responsible for any abandoned packages due to these circumstances.

Damaged/Missing Items in Shipment - If you've received a damaged product you MUST notify the Customer Service Department (CSD) of the shipping carrier (ex: UPS, FedEx) within twenty-one days to initiate a damaged package claim. It is required that you keep all of the packaging material, box(es) and broken product(s) until the shipping carrier completes the investigation. Failure to report damaged items from an order before forwarding, re-shipping or transferring the shipment to another location will result in immediate claim denial.

If you are missing any products from your order, you MUST notify the CSD within thirty days of receiving the items.

If you fail to report damaged and/or missing items in your shipment within the timeframe outline above, replacement products will not be shipped out under any circumstances. Failure to report missing items from an order before forwarding, re-shipping or transferring the shipment to another location will result in immediate claim denial.

Freight orders are excluded from this policy as it is the responsibility of the recipient to confirm that the goods are in new condition, without damage and that the order is complete before signing for the delivery.

Lost Packages: If you do not receive your package and the tracking information shows that the package has been delivered you must notify us within three days of the marked delivery date so that we can initiate a lost package tracer with the shipping carrier you have originally selected. Replacement products will not be sent until the shipping carrier completes the tracer request and grants permission for replacement product to be shipped UPS typically requires up to eight business days from the time the claim is started. USPS can require from five to ninety business days, depending on your country's time requirement that has been set forth. FedEx can require from twenty-one to twenty-eight business days from the time the claim is started. Please note that this is the policy of the shipper and not of Millaracing. Millaracing does not guarantee that any packages will be credited by the shipping carrier until this process is complete.

Millaracing will not provide refunds for any lost package under any circumstances.