Motor from Fora maker with displacement of 0.21" and balls bearings.
YMS Combat Edition.
The changes are:
- Main bearing is replaced with high performance brand name Teflon cage bearing
- Special YMS venturi installation
- Combat fuel spray bar, adopted for high pressure fuel bladder system
- Standard head is replaced with new one adopted to Nelson plugs
Top choice for Speed Limit combat.
The distance between mount lugs holes is 15mm. The engine comes with very efficient muffler.
*** The head adopted to Nelosn plug ***weight without muffler 179g
weight with muffler 203g