This is the RB Concept S3 II L2G Buggy Engine.

FEATURES: Ideal for club racers and beginners wanting great fuel economy at a reasonable price Eleven fin orange colored aluminum cooling head Aluminum connecting rod, grooved for better lubrication and reliability "ABC" cylinder & piston set, "A"luminum piston,"B"rass cylinder liner, that is "C"hrome plated Double rubber shielded front bearing keeps out dust and moisture Nylon body slide valve carburetor with 8mm intake diameter

INCLUDES: RB Concept S3 II L2G Buggy Engine. CP-02 Std #6 glow plug, slide valve carburetor, exhaust gasket and instructions

REQUIRES: Fuel: Car blend with 10%-25% nitro content Tuned Pipe and Manifold depending on vehicle, RB Concepts recommends their 2045 Tuned Pipe Kit, RBDG1240 Glow plug wrench and track equipment

SPECS: Displacement: 0.21cu in (3.49cc) Bore: 16.42mm
Stroke: 16.42mm
Intake Ports: 3 bypass
Exhaust Ports: 1
Crankshaft: 13mm
Carburetor Intake Diameter: 8mm
Carburetor Settings: Main Needle, 3.5 turns from closed Idle Needle, 5 turns from closed
Weight: 12.9oz (368g)
Distance from Backplate to end of Crankshaft: 3.7" (94mm)
Height from Mounting Tab to top of Cylinder Head: 3.4" (86.2)
Center of Mounting Holes Same Side: 0.83" (21mm)
Center of Mounting Holes Opposite Side: 1.5" (37.5mm)
Mounting Hole Diameter: 0.12" (3.2mm)
Distance from Front Bearing to End of Crankshaft: 1.2" (29.5mm)
Width of Crankcase Below Mounting Tabs: 1.3" (32.5mm)
Width at Mounting Tabs: 1.8" (45mm)
Distance/Bottom of Crankcase to Crankshaft Center: 0.61" (15.5mm)
Distance/Exhaust Port Center to Crankshaft Center: 1.2" (30mm)
Diameter of Cooling Head: 2.3" (59.2mm)