O.S. Engines

Rocker Arm Assembly FS-20

Rotor Stop #4B #4D #4C

Screw Set 21-32 (10)

Bearing R-1240ZZ

Prop Shaft Set: OMA-28 Series

Long Socket Wrench With Plug Grip

Dust Cover: 30VG

Needle Valve Assembly #11H #11HB

Slide Valve 12D: 18TM

Throttle Lever #2B #2CB

Crankcase: O.S. Max .12 TG Version 4

Carburetor 21J3-1: 21XR-B Version II

Carburetor Reducer AL2 5.5mm, Red: Speed T1202

Crankshaft: O.S.SPEED R21GT2

Cylinder Rebuild Kit: R21

Cylinder Piston Assembly: R21

Outer Head: 21XZ-R

Outer Head O.S.Speed B21 Adam Drake II

LC3 T-Maxx Revo Glow Plug Hot

T-2080 C-Ring

Cylinder & Piston B2101 Speed

Outer Head: O.S. Speed R2104

55HZ-R DRS Ringed .55 Helicopter Engine

Inner Head: T1204 with O-Ring