O.S. Engines
Quality and performance has made O.S. the standard in RC engines for over 80 years.
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Cover Plate: 21XZ-B
$22.04
Upper Arm: 21XM
$22.24
Mount Plate: 21XM
$22.24
Front Bearing: 21RZ-B
$27.29
Prop Shaft: 21XM
$57.74
Clearance Sale!
Flex Shaft Housing: 21XM
$10.86Clearance Sale!
Lower Arm: 21XM
$21.06
Prop Nut: 21XM
$6.49
Arm Shaft Assembly: 21XM
$13.75