Team Orion CRF21 7-port Factory Tuned Truggy engine

Specifications:
– Displacement: 3.5cc
– Bore: 16.2mm
– Stroke: 16.9mm
– Ports: 7
– RPM: 38,000
– Front/rear bearing: Swiss steel/ceramic
– Crankshaft: CRF SG-type
– Carburettor: 2-needle aluminium
– Weight: 350g