All GMS engines are assembled from CNC-machined parts, with distortion-resistant, 1-piece cast crankcases and gold-anodized heatsink heads machined from aluminum bar stock.
Other common features include dual ball bearing-supported crankshafts, 2-needle carburetors, tools and muffler gasket.
Spec Check:
- Displacement (cu in/cc): 1.20/19.9
- Bore (in/mm): 1.181/30
- Stroke (in/mm): 1.110/28.2
- RPM range: 1,800-14,000
- Output (HP @ (-) rpm): 3.3 @ 13,000
- Weight (oz/g*): 26.46/750
- Sport Prop: 16x10
- Racing Prop: 16x8
- Scale Prop: 18x5-6
Information provided by Hobbico, Inc. - Used with permission.
| Part # | Description | |
| GMS120AR | 1.20 Ringed BB Engine w/o Muffler |
