Riley MkXI |
| Category | Daytona Prototype |
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| Constructor | Riley Technologies |
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| Chassis | Hybrid Aluminum Honeycomb / Carbon fiber body panels on steel spaceframe |
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| Suspension | Double wishbone, push-rod-actuated coil springs over shock absorbers |
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| Length | ~ 4,509 mm (177.5 in) |
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| Width | ~ 1,996 mm (78.6 in) |
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| Height | ~ 1,095 mm (43.1 in) |
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| Wheelbase | 2,794 mm (110.0 in) |
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| Engine | Ford / Lexus / Pontiac / BMW / Porsche / Chevrolet 4,000–5,000 cc (4.0–5.0 L; 244.1–305.1 cu in) 24-valve to 32-valve, OHC/DOHC V8, naturally-aspirated, mid-mounted |
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| Transmission | Xtrac/Emco 5-speed or 6-speed sequential |
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| Weight | 900–1,021 kg (1,984.2–2,250.9 lb) |
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| Debut | 2003 |
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The Riley MkXI, and its evolutions and derivatives, the Riley MkXX, the Riley MkXXII, and the Riley MkXXVI, are a series of Daytona Prototype race cars, designed, developed and built by Riley Technologies, between 2003 and 2016. Between 2003 and 2016, the cars scored a combined total of 84 race wins, achieved 106 podium finishes, and clinched 85 pole positions.