Fabspeed MP4-12C / 650S Carbon Fiber Rear Air-Brake Wing (FS.MCL.12C.CFDL) _AC-FB15FDMU-GR-07 Includes 4 Gaskets total -

Includes 4 Gaskets total - 2 Header Manifold Gaskets and 2 Exhaust Manifold 2 bolt Gaskets

Stock = 256 HP / 214 TQ

so it's clear that the OEM manifold was designed for low-end response but falls off higher in the rev range

Maximum Torque(ft/lbs): 520

But once you begin pushing the vehicle

Fabspeed MP4-12C / 650S Carbon Fiber Rear Air-Brake Wing (FS.MCL.12C.CFDL) _AC-FB15FDMU-GR-07 Includes 4 Gaskets total -Direct bolt on replacement for the factory McLaren Air Brake Rear Wing constructed from the highest quality carbon fiber FEATURES: Fits all McLaren MP4 12C 650S Coupes and Spiders Worldwide Replaces heavy factory painted wing with 100% carbon fiber piece. Very similar to factory OEM McLaren carbon airbrake at reasonable cost. Finished in a UV clear coat for a long lasting glossy finish Saves weight and adds to the exotic visual appeal of the MP4 12C