Jaguar will be releasing the limited edition XKR 75 in commemoration of the brand’s 75th anniversary at the 2010 Goodwood Festival of Speed next month. The car packs in both aesthetic and underskin changes.

Jaguar has increased power output to 523 hp while torque is now at 655 Nm, an increase of 20 hp and 30 Nm from the standard XKR 5.0-litre supercharged V8. Top speed is electronically limited to 280 km/h, while acceleration to the century mark is now done in 4.4 seconds, 0.2 seconds faster than stock. The extra twist warranted an upgraded torque converter for the six-speed auto gearbox.

To go along with the added speed, the XKR 75 gets an aerodynamic body pack with a front splitter, side sill extensions, a rear diffuser, larger rear spoiler and a new sports exhaust. The XKR’s computerised Active Differential Control reduces steering sensitivity at “very high speeds” for better stability and driver control.

This is complemented by an upgraded suspension package which features stiffer spring and damper rates (by 28% front, 32% rear), new fully-machined aluminium uprights for increased camber stiffness, retuned Adaptive Dynamics damper control software and reduced ride height (15 mm up front, 10 mm at the rear). This Jag sits on 20-inch Vortex forged lightweight alloys in a dark grey finish.

Moving on inside, the interior has a “driver-focussed performance environment” thanks to charcoal upholstery with ivory stitching, piano black trim and a “Jet suede” cloth headlining.

Fittingly, only 75 units of the XKR 75 will be made available in UK, Germany, France, Italy, Belgium and Holland with a price tag of £85,500. This is bound to be a collectors gem.