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The Porsche 718 Boxster and Cayman GTS 4.0 (982 chassis) marked a celebrated return to naturally aspirated power for the mid-engine platform. Powered by the 4.0-litre flat-six MDG engine from the 9A2 Evo family, these models deliver 394 bhp (400 PS) and an exhilarating 7,800 rpm rev limit. Available with either a tactile 6-speed manual gearbox producing 310 lb-ft of torque, or the rapid 7-speed PDK dual-clutch transmission yielding 317 lb-ft, the GTS 4.0 provides an exceptionally capable and precise driving experience. JXL Performance supplies the necessary aftermarket hardware to properly maintain and upgrade this sophisticated sports car. Explore our complete selection of upgrades by category: To improve engine breathing and alter the exhaust note, browse our Intake and Exhaust systems, alongside thermal management solutions in our Cooling upgrades. Refine your alignment using our Suspension components, perfect your fitment with Wheels/Spacers, and maintain consistent deceleration with our Brakes selection. For dedicated circuit builds, explore our Engine Build and Drivetrain hardware, reduce vehicle mass with Interior seating, and manage aerodynamic downforce via our Exterior components. Keep the flat-six engine operating correctly with routine Service Parts. You can also browse everything we offer for this platform in the Shop All Parts collection.