OS Engines

O.S. Speed R21GT2

Carburetor 21J4 (B) B21 Adam Drake II without Reducer

Dust Cover: #2BK

Exhaust Header Pipe M1021: 21TM

Crankshft Ball Bearing, Rear: 12TZ Spec II

Crankshaft: 18TM

Crankcase: 25LA Natural

Dust Cover: 18TM

Metering Needle 12F2: 12XZ Speed Spec

Metering Needle Assembly: 21VZB (P) V-Spec 21C

Carburetor 61G: 91HZ-R Speed 3D 3C

91HZ-R 3D Speed Helicopter Engine, Black

Drive Washer: 25LA-S

Mixture Control Valve: 46AXII

Piston: FS-91 Surpass FT-160

Crankcase: 46AXII

Rear Housing: 21XM

Built-Up Parts Set (C&P) O.S. Speed T1204

Carburetor Dust Covers: #12FB, 12XZ Speed

Carburetor Reducer 7mm, Red: Speed 21 V-Spec

Cover Plate: 105HX-R

Slide Valve #21JS

105HZ-R DRS 1.05 Helicopter Engine

Rear Bearing: 21VZ, 30VG