OPS Marine 120RCB Marine In-Board Nitro Engine. RCB-No. 120 586112 complete with complete exhaust and carburetor. Specifications: Displacement 19.87cc. Maximum power/Max. power: 5.50HP R.P.M (max. power) 6000-24000 R.P.M. Weight/Weight 870gr Coupling Sleeve-racking-Transfer ports Decanting OPS/ports ABC scheme Rod/Connecting aluminum rod needle bearing rod Steel Ball Bearing's Carburetor/Carburetor Logo -Drum/Rotary (Remote needle for on-board tuning by 3rd channel) Type of Glowplug type Standard Type of discharge/Exhaust position Lateral/side Complete Exhaust with coupler pipe is 22.5" long all Aluminum