The Porsche 911 GT3 is already one of the most track-focused sports cars on sale; but, for those who want to extract even more out of their machine, Manthey-Racing is now offering their performance kit to American GT3 owners. This kit allows the Type-992 911 GT3 to lap Germany’s Nürburgring racetrack 4.19 seconds faster than a stock GT3– all without voiding the car’s existing warranty.

Shaving a few seconds off your lap will come at a cost– $57,300 for the base kit, to be exact, tacked onto the $170,000 or so for a base GT3.

The package contains several aerodynamic modifications, the most major of which are found in the rear. Riding atop the swan-neck supports is a wider rear wing with a Gurney flap and Manthey-branded endplates. The rear diffuser fins have also been extended, now made of carbon fiber reinforced plastic (CFRP). The same material is used to craft the aerodiscs mounted on the rear wheels. The front sees a little love, too, incorporating a larger spoiler lip and side flaps.

The aero treatment, while a standout feature, isn’t the entire picture. Manthey saw fit to mount four-way adjustable coilover suspension jointly developed with Porsche. It can be adjusted without the use of tools, and has increased spring rates of 10% in the front and 7% in the rear, intended to improve handling. Included with the kit are braided steel brake lines, though racing brake pads can also be optionally fitted. Speaking of optional, those flashy wheels are not standard equipment either. These lightweight forged wheels reduce unsprung mass by about 16 pounds total, costing a cool $15,500 on top of the kit’s base price.

For prospective buyers who want to see and even feel the difference for themselves, Porsche will be offering comparisons of GT3s with and without the Manthey kit at their Experience Center test tracks in Atlanta and LA. The performance gains are certainly there, but for some buyers, exclusivity alone may be enough to sell it.