Decoding the R34 GTR Models and Variants

The Nissan Skyline R34 GT-R (BNR34) stands as the final, most refined iteration of the legendary twin-turbo, straight-six Skyline line. While every R34 GT-R is a masterpiece, Nissan's continuous pursuit of perfection, combined with the extreme exclusivity of NISMO special editions, created a fascinating hierarchy of models.

Here is a breakdown of the key variants that define the R34 GT-R legend.

1. The Foundation: GT-R (Base Model)

The standard GT-R is anything but basic. It set the benchmark for the entire range, bringing a host of technological improvements over its R33 predecessor.

Feature	Details
Engine	RB26DETT (2.6L Twin-Turbo I6) with an official 280 PS rating (actual output was often closer to 330 hp).
Drivetrain	ATTESA E-TS Pro All-Wheel Drive system.
Transmission	Getrag 6-speed manual gearbox (a significant upgrade in strength and feel).
Interior	The iconic Multi-Function Display (MFD) which showed real-time engine and performance data (boost, temperature, throttle, etc.).

2. The Performance-Focused V-Spec Models

The V-Spec (Victory Specification) models were the track-oriented variants, featuring crucial upgrades to the chassis, suspension, and aerodynamics.

V-Spec l (1999–2000)

The original V-Spec focused on enhancing the chassis' connection to the road.

Active LSD: Swapped the mechanical rear LSD for an Active Limited-Slip Differential (Active LSD) for electronically controlled torque distribution.
Aero: Added an under-body diffuser package (front and rear) to significantly improve downforce, especially at high speed.
Suspension: Firmer, lowered suspension tune compared to the base model.
ATTESA E-TS Pro: Used the more advanced ATTESA E-TS Pro system.

V-Spec II (2000–2002)

The V-Spec II was a mid-cycle refresh that refined the track-focused formula.

Carbon Fiber Hood: Replaced the standard aluminum hood with a carbon fiber unit featuring a NACA duct for improved engine cooling and weight reduction.
Diffuser: Upgraded the carbon fiber rear diffuser.
Interior: Featured a center console panel finished in Iridium/Black trim.

3. The Grand Tourer: M-Spec

Named after chief engineer Shinichiro Mizuno, the M-Spec (Mizuno Specification) offered a more luxurious and comfortable take on the GT-R, focusing on usability for high-speed grand touring.

Softer Ride: Featured specially tuned "Ripple Control" dampers and a softer suspension setup for improved ride comfort on public roads.
Luxury Interior: Included heated leather seats for a premium feel.
Exclusive Color: The M-Spec introduced the special paint color Millennium Jade.

4. The Legendary Final Editions: Nür

The Nür models (short for Nürburgring) were the final, limited-production versions built to celebrate the car's legacy before production ended in 2002. They are the most coveted factory-spec models.

V-Spec II Nür & M-Spec Nür

Both the V-Spec II and M-Spec received the "Nür" treatment, which included the following crucial engine upgrades:

N1 Engine Block: Equipped with a N1-specification RB26DETT engine block, which featured thicker walls and upgraded internal components (crankshaft, pistons, turbos) for increased durability and reliability under high stress.
Turbochargers: Upgraded turbochargers that flowed more air (though factory power was still officially capped).
Unique Color: Exclusively available in collector colors like Millennium Jade and Silica Breath.
Collectibility: Each engine was stamped with a gold VIN plate, signifying its Nür status.

5. The Ultimate: NISMO Z-Tune

The Z-Tune is the undisputed "Holy Grail" of R34 GT-Rs. It was not a factory model but a bespoke creation by NISMO (Nissan Motorsports) in 2005 to celebrate its 20th anniversary.

Limited Production: Only 20 were ever made. NISMO bought back low-mileage V-Spec II GT-Rs from owners and completely rebuilt them.
Engine: The legendary RB26DETT Z2 engine. This was a 2.8-liter stroker version of the RB26, producing a true 500 hp (368 kW).
Chassis: The chassis was seam-welded and reinforced with carbon fiber, making it significantly stiffer than any other GT-R.
Aerodynamics: Featured aggressive, functional carbon fiber body panels, including the front bumper, fenders, and hood, all designed to increase downforce.
Suspension: Custom-developed Sachs suspension.

R34 GT-R Model Comparison Table

The R34 GT-R remains an icon because of this incredible variety, with a model to suit every preference, from luxury touring to dedicated track use, culminating in the hyper-exclusive Z-Tune.

Model	Production Years	Focus	Key Differentiating Features
GT-R (Base)	1999–2002	Standard High-Performance	ATTESA E-TS AWD, Brembo Brakes, MFD.
V-Spec	1999–2000	Track Performance	Active Rear LSD, Underbody Diffusers, Firmer Suspension.
V-Spec II	2000–2002	Track Refinement	Carbon Fiber Hood with NACA Duct, Stiffer Suspension.
M-Spec	2001	Luxury Grand Touring	Heated Leather Seats, Softer Suspension ("Ripple Control").
Nür Editions (V-Spec II Nür/M-Spec Nür)	2002	Final Collector's Model	N1-Spec RB26DETT engine internals (stronger), Special Paint (Millennium Jade).
NISMO Z-Tune	2005 (Built by NISMO)	Ultimate Road Car	2.8L RB26DETT Z2 (500 hp), Carbon Aero, Reinforced Chassis.