O.S. Engines

Rocker Arm: FS-70 Ultimate

Choke Arm Assembly: WLA-2, GT55

Return Spring: #6H, #7H, #8H

Carburetor 22B2: 21XZ-B V2

Exhaust Pipe: 120-240

Exhaust Header Pipe Nut: 200 Surpass

Cylinder & Piston Assembly: R2101 Speed

Piston Pin: GT55

Prop Washer: 61-90

Exhaust Pipe Assembly: 40-300

Cylinder Head: GF40

Silencer Gasket: F-5040, FS110A

Main Needle Valve Assembly: 61ER

Cap Screw 4x20mm (10): GT55

O.S. MAX FS-52 SURPASS

Pushrod Cover: 56FS-a

Carburetor 70R: FS155A-P

Inner Head: 21XZ-B

Piston Ring: FS-61

Drive Washer: FS155A-P

Cylinder Piston Rod Set: O.S. Speed B2104

Front Bearing: 21XZ-B

Main Shaft: 3815-1000

Crankcase: 55AX