This is the RB Concept C6BBT Engine and Exhaust Kit for Buggy Use.

FEATURES: Front crankshaft bearing with double rubber shields ABC cylinder construction, "A"luminum Piston with a "B"rass cylinder liner that is "C"hrome plated Five intake ports, two bypass or scavenging ports and two exhaust booster ports Aluminum header and tuned pipe with pressure tap installed-polished natural finish Ten fin orange colored aluminum cooling head Composite body slide valve carburetor with 7mm venturi

INCLUDES: RB Concept C6BBT Engine with turbo glow plug, tuned pipe, header, five springs, two exhaust gaskets and instructions

REQUIRES: Fuel: Car blend with 10%-25% nitro content Glow plug wrench and track equipment

SPECS: Displacement: 0.21cu in (3.49cc) Bore: 16.22mm
Stroke: 16.80mm
Intake Ports: 5+2 bypass
Exhaust Ports: 3
Crankshaft: 14.20mm
Carburetor Intake Diameter: 9mm
Carburetor Settings: Main Needle, 3.5 turns from closed
Idle Needle, 5 turns from closed
Weight: 12.9oz (367g)
Distance from Backplate to end of Crankshaft: 3.7" (94mm) Height from Mounting Tab to top of Cylinder Head: 4.3" (108.5mm)
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 of Mounting Tabs: 1.8" (45mm)
Distance/Bottom of Backplate to Crankshaft Center: 1.8" (45mm)
Distance/Exhaust Port Center to Crankshaft Center: 1.2" (30mm)
Diameter of Cooling Head: 2.4" (60mm)