Suzuki SV650 Engine: Compact 645 cc, 90 degree liquid-cooled V-twin, DOHC 8-valve engine tuned for strong low to mid rpm power. 90 degree V-twin cylinder layout eliminates primary vibration without a counter- balancer, keeping the engine simple and compact. Lightweight chain-driven DOHC, shim-under-bucket valve system with 31 mm intake valves and 25.5 mm exhaust valves. High capacity liquid-cooling system and oil cooler enhance engine performance and durability - coolant routing is integrated with the clutch cover and engine case for a cleaner look and reduced weight. Smooth-shifting 6-speed transmission with vertically staggered transmission shafts for a shorter, more compact crankcase.