O.S. Engines
Quality and performance has made O.S. the standard in RC engines for over 80 years.
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Needle #4BK #2K
$13.78Clearance Sale!
Low Unit Screw (4): 21XM
$10.86
Upper Arm: 21XM
$22.24Clearance Sale!
Cover Plate: 21XZ-B
$22.04
Arm Shaft Assembly: 21XM
$13.75
Prop Nut: 21XM
$6.49
Prop Shaft: 21XM
$57.74
Screw Set CZ-MX (8)
$7.46
Side Plate: 21XM
$22.24
Inner Head: 21XZ-R
$52.69