O.S. Engines

55HZ-H Hyper Ringed .55 Helicopter Engine

Crankshaft: 25XZ

Cylinder & Piston Assembly: 12XZ

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

Needle High Speed WLA-2: GT55

Throttle Lever #1A-#3A

Piston: 55HZ Hyper

Idle Gear: IL-300 Dia Star

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

Connecting Rod: 120AX

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

Standoff 5x25.4mm 1" (4): GT55

Muffler Screws #744B

Cylinder Head: FS72 Alpha

Piston Pin Retainer: BGX 3500

O.S. Metering Needle (21M) R21GT

Gasket Set: 12TG

Mixture Control Valve: #60K

Screw Set (8): 15CV-A

Carburetor Body: 22C(B), Speed B2102

Venturi: 55HZ, 105HZ

Piston/Sleeve Set: OS MAX-21 V2

Gasket Set: 120AX

T-1070SC L52 Pipe