O.S. Engines

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

Carburetor Reducer AL2 5.5mm, Red: Speed T1202

Crankshaft: O.S.SPEED R21GT2

O.S. Carburetor Body 22E (B) Speed B2103 Type R

Connecting Rod: 18TM

Outer Head: 21XZ-R

T-2080 C-Ring

Cylinder Rebuild Kit: B21 Speed Adam Drake

Cylinder & Piston B2101 Speed

Crankshaft: O.S. Speed T1205

55HZ-H Hyper Ringed .55 Helicopter Engine

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

Cylinder/Piston/Rod Set: O.S. Max .12 TG Version 4

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

T-1070SC L52 Pipe

TR02 Tuned Silencer Set EFRA2165

Inner Head: O.S.SPEED R21GT2

Cover Plate: 105HX-R

Crankcase: 21XZ-R VII

Cylinder & Piston Assembly: 12XZ

Carburetor Dust Covers: #12FB, 12XZ Speed

Slide Valve #21JS

Connecting Rod: R2102, Speed 21XZ-GT

O.S. Cover Plate Speed: T1203