The HPI G3.0 HO engine is the high output (HO) version of the well-known HPI G3.0 engine (#101310).The new high output version is optimsed for performance and durability without compromising on run time.A finned black-coated crankcase design not only adds strength and rigidity but will also help cool the engine.HPI's WR8 Rally car (#106950) comes preinstalled with the G3.0 HO engine.Specification for G3.0 HO:Capacity :2.95cc Bore: 16.8mm Stroke 13.6mm RPM : 30000 Practical RPM: 6500~32000 Power : 2.2 ps/kw Carburettor: Composite Slide,7mm Bore