O.S. Engines

Crankcase: 19XZ-B Speed

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

Heat Sink Head: 30VG

Gasket Set: 12TG

90 Degree In-Cowl Header: FS110A

Motor Mount: 15CV-A, 10LA

Connecting Rod Bearing: GGT10

Back Plate: Sirius 7

Crankcase: GT15

Crankpin Stop Screw: GT60

Cylinder & Piston: 25FX

Cylinder Head: FS-91-P

Piston: 37SZ-H

Cylinder Liner: GT55

Gasket Set: FS-120 II

Case Gasket: GT60

Pan Head Screw 3x18mm (10)

Piston Ring: 55HZ

Piston Ring: FS-91 FT-160

Reduction Gear Bearing: FR5

Screw Fixing 4x40mm WLA-2 (1): GT55

Stator Assembly: 3820-1200 .25

Carburetor 61D: 65AX

Muffler Extension: #842