.12 STI Evo4:















Quote: "Now available, known as the EVO4, the latest generation of World Champion 12
size IC Sirio engine has been launched! The Sirio 12 Evo4 features a 3 ports
ABC Efra legal liner assy, a special STI type black crankshaft, also
complying to the 2007/2008 Efra rules. Using some new material on the
carburettor main needle, a new conrod, a new lightweight efficient cooling
head, the Evo4 will offer the highest performance from a 1:10 IC 200mm
Touring car, when coupled with the dedicated tuned-pipe line and the Kyosho
2D clutch set. Some new Ceramic rear bearings are available as option."