S-Power S5 .21 Pro engine
The S-Power S5 .21 Pro engine is the latest engine line up from SWorkz produced in Japan. Developed to have the performance of the S-Power S7 but at a lower price, its popular 3 port design delivers both torque and top speed. The S5 also comes standard with a 7.5mm carburetor venturi, a turbo head, black coated crankcase and a balanced crankshaft. Its lightened Blue engine heat sink sports a Dragon logo to mark the year of the Dragon on the Chinese calendar.
Source: S-Workz [sworkz.com]