O.S. Engines

OS Engines Carburetor Rotor: 61ER

OS Engines Cover Plate: 28XZ

OS Engines Piston Pin Retainer: GT33

OS Engines O-Ring PRC: 120Surpass

OS Engines Throttle Arm Assembly WLA-2: GT55

OS Engines Carburetor 21M2-B: Speed R2101

OS Engines Back Plate Assembly O.S. Speed B21 Adam Drake Edition 3

OS Engines O.S. Cylindr & Piston Assy OS Speed R21GT

OS Engines Idle Adj Valve STP #6H7L8H

OS Engines Needle Holder FT-120-300

OS Engines Under Cover: IL-300 Dia-Star

OS Engines Crankshaft: B21 Ongaro Edition

OS Engines M11 Header Pipe Nut: FS070S and FS91S II

OS Engines Slide Valve #60U

OS Engines Crankcase: O.S. Max .12 TG Version 4

OS Engines Cylinder Head Gasket: 35AX

OS Engines Needle Assembly: FT-120-300

OS Engines Pushrod Cover Assembly: 120Surpass

OS Engines Needle Assembly #10E

OS Engines Connecting Rod: 35-40FP, 40 LA

OS Engines Cylinder Jacket: FT-160

OS Engines Cover Plate: O.S. Speed B2104

OS Engines Carburetor Rotor: #60K

OS Engines Meter Needle Assembly #12FB: 12XZ Speed