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  HPD ARX-04b

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Country of origin:Japan
Introduced in:2015
Designed by:Wirth Research
Predecessor:HPD ARX-03b
Author:Wouter Melissen
Last updated:December 15, 2014
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Click here to download printer friendly versionHaving relied on the Courage-based, Wirth Research modified LMP design for nearly a decade, Honda Performance Development commissioned long-time partner Wirth Research with design and construction the construction of an all-new Coupe for the 2015 season. Known as the ARX-04a in LMP1 specification and ARX-04b in LMP2 trim, the sports prototype complies with the latest regulations, which favour closed cars.

Like the ARX-03b it replaces, the new LMP2 Coupe is powered by the production based Honda V6. Derived from the J35 family of engines, the 'HR28TT' features a single overhead camshaft actuating four valves per cylinder and a pair of turbos. The V6's output is regulated by sonic restrictors but should produce around 500 bhp. This power is transferred to the rear wheels through a six-speed sequential gearbox.

The first customer of the cost-capped LMP2 machine is ESM Racing, who in 2012 and 2013 fielded a pair of ARX-03bs. The Day-Glo green liveried HPDs will be fielded in the FIA World Endurance Championship and the long distance events of the UnitedSports Car Championship.

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  Article Image gallery (3) Specifications