Engine OS engines 25FX II

2-stroke engine for 4cc airplane. Very high manufacturing quality to constantly obtain incomparable performance and impeccable reliability, which are the main characteristics of O.S. engines, the world's leading manufacturer of engines for scale models. Very easy to start and adjust. OS engines engines last over time!

Technical specifications:

• Displacement: 4.07 cc
• Bore: 18.0mm
• Stroke: 16.0mm
• Operating range: 2500-19000t/mm
• Weight: 248 g (jar included E-3080 83 g)
• Two-blade propellers (recommended): 9x5-6,9.5x5,10x5"
• Thread: UNF1/4“-28
• Cylinder (Number/System): 1
• Power: 0.84HP@18000 rpm

Supplied with muffler 892 extension needle and candle