 | This article needs additional citations for verification. (October 2018) |
 The No. 21 ARX-03c during the 2013 24 Hours of Le Mans | |||||
| Category | Le Mans Prototype LMP1 and LMP2 | ||||
|---|---|---|---|---|---|
| Constructor | HPD (Wirth) | ||||
| Designer(s) | Nick Wirth | ||||
| Predecessor | Acura ARX-01, Acura ARX-02 | ||||
| Successor | HPD ARX-04b | ||||
| Technical specifications | |||||
| Chassis | Carbon fibre monocoque | ||||
| Suspension (front) | Double wishbone with adjustable toe, camber, ride heights. Four-way damber units with separate coil springs, pushrods with anti-roll bars | ||||
| Suspension (rear) | Double wishbone with adjustable toe, camber, ride heights. Four-way damber units with separate coil springs, pushrods with anti-roll bars | ||||
| Width | 2000 mm | ||||
| Height | 1030 mm | ||||
| Engine | 03a/c: Honda AR6-LMV8 3.4-litre naturally aspirated V8 03b: Honda HR28TT 2.8-litre V6 turbocharged | ||||
| Transmission | HPD-Hewland 6 sequential with manual paddle-operated selection | ||||
| Weight | 900 kg | ||||
| Fuel | IMSA: VP MS100 E10, 100-octane gasoline + 10% ethanol WEC: – Elf LM24 E10, 101-octane gasoline + 10% ethanol | ||||
| Tyres | Michelin Dunlop | ||||
| Competition history | |||||
| Notable entrants |  Muscle Milk Pickett Racing JRM Strakka Racing Starworks Motorsport Level 5 Motorsports Extreme Speed Motorsports | ||||
| Debut | 2012 12 Hours of Sebring | ||||
| First win | 2012 12 Hours of Sebring | ||||
| Last win | 2014 Monterey Grand Prix | ||||
| Last event | 2015 6 Hours of Silverstone | ||||
| |||||
| Teams' Championships | 5 2012 FIA WEC LMP2 2012 ALMS P2 2013 ALMS P2 2012 ALMS P1 2013 ALMS P1 | ||||
| Constructors' Championships | 4 2012 ALMS P2 2013 ALMS P2 2012 ALMS P1 2013 ALMS P1 | ||||
| Drivers' Championships | 4 2012 ALMS P2 2013 ALMS P2 2012 ALMS P1 2013 ALMS P1 | ||||
The HPD ARX-03a, ARX-03b, and ARX-03c are Le Mans Prototypes race cars developed by Honda Performance Development in 2012. The 03a model utilizes a Honda V8 engine for use in the LMP1 category, while the 03b uses a turbocharged V6 engine for the LMP2 category. Three teams have already announced their use of the ARX-03 in the FIA World Endurance Championship and the American Le Mans Series, as well as at the 24 Hours of Le Mans. Muscle Milk Pickett Racing have purchased an 03a for use in the American Le Mans Series,[1] joined by two 03bs for Level 5 Motorsports.[2] In the 2012 FIA World Endurance Championship, Strakka Racing and JRM Racing campaigned a single 03a each,[3] joined by a single-car 03b entry by Starworks Motorsport in LMP2.
- ^ "Muscle Milk Pickett Racing turns to HPD for ALMS assault". americanlemans.com. American Le Mans Series. 2011-12-19. Retrieved 2012-01-04.
- ^ Mercier, Laurent (2011-12-26). "Le premier équipage Level 5 Motorsports connu..." endurance-info.com (in French). Endurance-Info. Archived from the original on 2012-01-08. Retrieved 2012-01-04.
- ^ "Strakka Racing to enter WEC with new HPD ARX-03a". Planet Le Mans. 2011-09-11. Retrieved 2012-01-04.