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4V 5000mAh 55C
To save a few grams of overall weight
5mm long (exposed length)
Separate Receiver Support
O.S.Speed 91HZ-R & Powertune Pipe Combo Goblin 630/700/770/Speed Parts 4V 5000mAh 55CHere at BK Hobbies, we've put this combo together. This is one the most proven, reliable and powerful setups on the market. It includes an O. S. Speed 91HZ R engine and a Powertune muffler that was specifically designed to work with this engine. OS Engine Features: Lightweight, machined heat sink head Big bore carburettors best suited for the intended use (F3C or 3D) Best precision advanced exhaust cylinder timing (for F3C or 3D) Newly designed
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