Double ball bearing, schnuerle ported, a real power house. Cylinder can be turned to exhaust from side to rear. Bore: .680, Stroke .680, Disp: 247 cu. in, 15,000 RPM with 9-4 prop. Weight 8 oz. Availability: Usually ships in 2-3 business days. FX25012Regular price: $115.95Sale price: $75.00 July Special! Take $3 off any order over $50 which includes a Black Hawk Model with code word BHM. Every order over $25 will recieve one FREE package of Control Line Connectors.