The return of Thunder Bunny

The return of Thunder Bunny

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Photos by -Autonet.ca
Joe Duarte
Published: 02 11 2006

First Volkswagen returned to its roots with the re-introduction of the Rabbit name in North America. Now the company pays homage to one of its most steadfast fans with the concept Thunder Bunny.

At the start of the 1980s, Bill Neumann -- founder of California-based Automotive Performance Systems (APS) and the Neuspeed line of aftermarket parts and accessories -- was frustrated with the fact that Volkswagen had not introduced the hot GTI hatchback GTI in America even though it had been sold in Germany since 1976.

To prove the performance hatchback would find a loyal market in America, Neumann modified a Rabbit hatchback and called it Thunder Bunny. He sent it to Motor Trend and Road & Track magazines, where it met with tremendous approval.

Volkswagen introduced the GTI to America in 1982, but Thunder Bunny had served to put Neuspeed on the aftermarket map as well as start a community of specialists in watercooled Volkswagen performance. Modifying VWs was not new but the new generation of watercooled cars hadn't sparked much interest.

Built with the collaboration of the VW Design Centre in California, the new Thunder Bunny is a blend of subtle design massaging and tuning technology.

Creating the thunderous noise from under the hood is a newly developed turbocharger system, designed by Neuspeed especially for Volkswagen's 2.5-litre 5-cylinder engine. Boost is restricted to a maximum of seven psi, but it still boosts horsepower to 225 (75 more than the stock 2.5) and generates a hefty dose of low-end torque.

The installation also includes a modified intake manifold, stainless-steel exhaust and specially-baffled aluminum oil pan provide optimum flow and cooling. A performance clutch and Quaife differential were added to the powertrain for durability and a more efficient delivery of power to the front wheels.

Thunder Bunny's gleaming candy white exterior is made distinctive by several design studio touches. The paint was overlaid with pearl silver graphics that blink on and off with the changes in light reflection. They are meant to evoke the contours of the car's geography or waves of air that flow over the surfaces.

The concept's body kit includes a larger central grille and a more muscular rear valance framing a twin R32-style exhaust from Neuspeed, gold-coloured forged alloy 19-inch wheels shod with Michelin Pilot Sport Cup 235/35R19 tires. Braking is entrusted to 328 mm 2-piece floating cross-drilled Brembo discs and 4-piston bunny-bedecked calipers up front, and 310 mm discs in the rear.

Bilstein coil-over shocks and APS/Neuspeed sways bars, measuring 25mm front and rear, ensure the GTI keeps its nimble handling prowess. The suspension system is adjustable for both ride height and for shock stiffness, giving the new Thunder Bunny a dual character, suitable for the street or the track.

Inside, stock GTI seats were recovered in black and white checkered tweed that echoes styling from the early ‘80s, and the striking fabric is elegantly framed by surrounding black leather with white stitching. The colour scheme is complemented by the white carbon-fibre interior trim, and a spherical aluminum shift knob. A stock GTI steering wheel was recovered in alcantara.

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