O.S. Engines

Spring Choke Friction: WLA-2, GT55

Ball Link #3 20K: 21VZ-R

18TM Revo Manifold

Idle Adj Valve STP #6H7L8H

Needle Holder 21M: 21XZ-R

Meter Needle Assembly #12FB: 12XZ Speed

Piston Pin: 21XZ-R

Cover Plate: 28XZ

Crankshaft: 12TG-P

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

Front Bearing: 90-300

Connecting Rod Bearing: GGT10

Back Plate: Sirius 7

Crankcase: GT15

Crankpin Stop Screw: GT60

Cylinder & Piston: 25FX

Piston: 37SZ-H

Cylinder Head: FS-91-P

Cylinder Liner: GT55