2015 Arctic Cat Prowler 1000 XT EPS, Features1000 H2 V-Twin 4-Stroke Engine with EFI: A 951cc power mill that's more efficient, more reliable and more potent than anything out there. Featuring a Pentroof combustion chamber with 4 valves per cylinder and electronic fuel injection. It's a combination that provides, more complete combustion, which directly translates to more power, more efficiency and cleaner exhaust.