25FX
The state-of-the-art in sport/competition engines!
- All FX engines come with remote needle valve - the feature most asked for!
- A longer crankshaft provides more secure attachment for spinner, prop and nut
- Dual ball bearing construction adds durability and longevity
- Semi-square head shape creates more fin area to increase cooling capacity
- Each engine comes with a high-performance carburetor and muffler with adjustable exhaust direction and built-in pressure tap
- Specifications
- Exploded Views
- Parts Listing
- Accessories
- Gallery
Stock Number: OSMG0525
Displacement: 0.2485 cu in (4.07 cc)
Bore: 0.708 in (18.0 mm)
Stroke: 0.630 in (16.0 mm)
Practical rpm range: 2,500-19,000
Output: 0.84 hp @ 18,900 rpm
Weight w/muffler: 10.8 oz (306 g)
Includes: expansion style muffler
Displacement: 0.2485 cu in (4.07 cc)
Bore: 0.708 in (18.0 mm)
Stroke: 0.630 in (16.0 mm)
Practical rpm range: 2,500-19,000
Output: 0.84 hp @ 18,900 rpm
Weight w/muffler: 10.8 oz (306 g)
Includes: expansion style muffler
Primary Accessories
| Stock Number | Mfr Number | Product Description | Quantity Needed |
| DAVG3025 | 2025 | Dave Brown Engine Mount .20-.25 | 1 |
| GPMQ4150 | GPMQ4150 | Great Planes Ultra Precision Fuel Filter | 1 |
| OSMG2690 | 71605300 | O.S. #6 A3 Glow Plug Hot Air | 1 |
| TOPQ5075 | TOPQ5075 | Top Flite 10x4 Power Point Propeller | 1 |
Field Equipment
| Stock Number | Mfr Number | Product Description | Quantity Needed |
Optional Accessories
| Stock Number | Mfr Number | Product Description | Quantity Needed |
| MACG1120 | 1120 | Macs Tuned Pipe .19-.35/3.5cc | 1 |
| MACG2339 | 2340 | Macs Standard Tuned Pipe Adapter O.S. 21FX/32FX | 1 |
| OSMG2750 | 71908410 | O.S. Motor Mount 25FX/32SX/35AX | 1 |
| PAAP1453 | PT31 | Pacer Zap After-Run Engine Oil 1 oz | 1 |
| TOPQ5055 | TOPQ5055 | Top Flite 9x5 Power Point Propeller | 1 |
