Description
The OS 37SZ-H Ringed Heli Engine delivers plentiful power for 3-D thrills! Designed to deliver premium performance for 30-sized machines, from extreme aerobatics to stable hovering!
Features:
- The crankshaft has been re-engineered to reduce vibration, resulting in smooth power across the entire rpm range
- A larger rear bearing boosts power even more
- Features the same mounting pattern and muffler dimensions as the 32SX-H, for easy installation in most 30-size helis.
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