O.S. Engines

O.S. Built-Up Parts Set Cyl Piston OS Speed R21GT

Prop Shaft: OMA-50 Series

Vavle Exhaust: FS-91 Surpass

Connecting Rod: 21VF/SE

Crankshaft O.S.Speed B21 Adam Drake II

O-Ring Small #2K IFN

Drive Washer: 25LA-S

O-Ring Large: FS90IIS

Rear Bearing: 25FX, 32F

Gasket Set: 46AX

Ignition Module IG-05: GT15HZ

Gasket Head, .1mm: 105HZ

Rear Adapter: 18TM

Connecting Rod: 56 FS

Valve Spring: FS-70 91SII

Cover Plate: FS72 Alpha

Mixture Control Valve: 200 Surpass

Crankcase: GT22

Mid Needle Valve Assebly: 61ER, 941HZ-R

Muffler: E-2030, 20-25FP

90 Degree In-Cowl Header: FS110A

Intake Manifold Assembly: FS-120III

Piston Ring: FS-70 SII

Carburetor Body: 21J3