O.S. Engines

Cylinder Head Fixing Screws: 21TM

Carburetor Reducer 6mm: Speed 21 V-Spec II

Piston Pin: 15RX

Exhaust Seal Ring (10)

Main Shaft: OMA-2810-1250

Crankshaft: 55AX

Carburetor Spacer: Sirius 7

Prop Shaft: OMA-38 Series

Camshaft Bearing: F 40-120

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

Prop Shaft: OMA-50 Series

Connecting Rod: 21VF/SE

Crankshaft O.S.Speed B21 Adam Drake II

O-Ring Large: FS90IIS

Rear Bearing: 25FX, 32F

Gasket Set: 46AX

Cylinder Liner: 95AX

O.S. Ball Link #6 22D Carb Speed B2103 Type S

Hex Head Screw 4x15mm (10)

Metering Needle Assembly 18TM

Cylinder Head: .35AX

Piston Pin: 108FSR

Link Pin: Sirius 7

Inner Head: T1202 Speed