New for the 2013 model year is the "For Track Pack." The new optional Track pack GT-R will be distinguished by lightweight six-spoke RAYS alloy wheels with gloss black painted centers. The new wheels will be combined with brakes cooled by additional cooling ducts built into the front bumper. These reduce the operating temperature of the front brake discs by as much as 100 degrees during track use, improving the stopping performance. Similar ducts, hidden behind the rear wheels, channel cooling air over the rear discs. The suspension system has also been revised to be optimal for track use, while adjustable dampers offer more comfort when the car is being used on the road.
This will be one of the lightest GT-R models offered due to the fact that it comes in a two-seat configuration: the rear buckets have been removed to save weight and the front seats have been replaced with lighter Recaro racing seats trimmed with blue bolsters in a high-grip fabric.
Engine response and torque at mid- and low-speeds, and power at high revolutions, has been significantly improved, mainly due to:
- Improved intake efficiency
- Better air flow resistance, which has been reduced by the addition of an intake manifold fitted to the head of each unit and the use of resin in the enlarged air intake duct for the intercooler.
- Improved exhaust emissions efficiency and enhanced control.
- Reduced air flow resistance thanks to a more compact under floor catalyzer which improves emissions efficiency and reduces weight.
- Improved exhaust valve cooling performance by the adoption of a newly-designed metallic sodium-filled valve. At the same time, valve control timing, the air mixture ratio and ignition timing have been improved.
The engine is mated to an improved transmission as well. The shift feel and quietness have been refined through a strengthened design of the shift fork arm and a firmer fixing bearing for the flywheel housing. Also, all versions will be offered with a high-performance differential oil R35 COMPETITION type 2189E.
Another significant improvement is the new asymmetric suspension which is similar to the one offered in racing cars. For the front suspension, a harder spring rate on the left side has been set and for the rear, the suspension arm has been installed upward on the left side and downward on the right for an imbalanced wheel load when the car is stationary, but equalized during driving. This provides improved responsiveness and smoothness which the driver feels when steering, as well as enhanced cornering stability and riding comfort.
For the additional Track Pack, customers on the British market will need to tack on an extra £10,000 ($15,600 at the current rates) to the £74,450 ($116,150 at the current rates) price tag of the standard GT-R, for a grand total of £84,450 ($131,750 at the current rates).
On the U.S. market, the model is offered in two versions: the GT-R Premium at a starting price of $96,820 and the GT-R Black Edition priced at $106,320. An optional Special Paint-Super Silver will add another $3,000 to the car’s price. Article Source