O.S. Engines

Crankshaft: 55AX

Cylinder Liner: 50SX-H

Cylinder Liner: FS-70 Surpass

Exhaust Joint Nut: FS-120 Surpass

Mixture Control Screw: #2F and #2FB

Manifold Seal: FT-120-300

Needle Holder FT-120-300

Manifold Nut M9

Needle Valve Assembly: #60B

Needle Assembly: #61B, 91HZ

Mid Needle Valve Assebly: 61ER, 941HZ-R

O-Ring: 21TM

Piston: FS-40 Surpass

Rear Housing: GT60

Rocker Cover: 120 Surpass

Rotor Stop Holder #2K 74

Rocker Cover: GF30

Throttle Lever #2F #2FB

Stator Assembly: 5020-490 .40

Needle 3 (21M)

Carburetor Complete 21M4(B) W/O Reducer

Piston: GT15

Bubbleless Clunk

Carburetor Body: 61C, 95AX