Outgoing McLaren P1 houses 3.8 litre twin-turbo V8 in conjunction with an electric motor, produces 916 PS max. power. Same powertrain combo is uprated to push 1000 PS in McLaren P1 GTR. Further, front track width of P1 GTR is 80mm wider and wears more quarrelsome front fascia.
Aerodynamics of McLaren P1 GTR is enhanced from regular P1. New aero blade front wheel arches deviate air supply to rear radiator of P1 GTR. Door wing mirrors are repositioned to A-pillar to have better control over drag. Rear wing gets hydraulic DRS (Drag Reduction System).
Lightweight 19 inch alloys are used on front and rear, with 267mm and 330mm section width Pirelli (slick) run flat tires respectively. Onboard air jacking system and quick release wheel nuts (centre locking) are provided to enable quick tyre swap. Ground clearance is reduced via race tuned suspension kit. Exhaust unit is developed newly specific to McLaren P1 GTR, sports straight cut dual pipe arrangement made of inconel and titanium alloy. Diffuser is made of carbon fibre reinforced polymer.
Soon after current 375 unit production of regular McLaren P1 is finished, the company will start producing P1 GTR trims. Price of 1.98 million pounds (Rs. 20.09 crores approx.) is required to claim ownership of a P1 GTR, which is inclusive of McLaren P1 GTR driver programme at McLaren Technology Centre in Woking, Surrey, United Kingdom.