FEATURES: Blue colored anodized aluminum heatsink head Pilot shaft crankshaft Backplate for drop-in use with rotostart system Rear round-port exhaust Uses stock clutch system Slide valve carburetor ABC construction-Aluminum piston with a Brass liner that is Chrome plated

INCLUDES: One Trinity Sirio .30 Racing Engine One carburetor retainer bolt One spare collet One Sirio decal sheet One instruction manual