OS Engines

Outer Head: Speed 21 V-Spec

Cylinder Liner: 50SX-H

Cylinder Liner: FS-70 Surpass

Exhaust Joint Nut: FS-120 Surpass

Manifold Seal: FT-120-300

Mixture Control Screw: #2F and #2FB

Mixture Control Valve 18TM

Manifold Nut M9

Needle Holder FT-120-300

Needle Valve Assembly: #60B

Needle Assembly: #61B, 91HZ

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

Metering Needle Assembly: 30VG

Piston: FS-40 Surpass

O-Ring: 21TM

Rear Housing: GT60

Rocker Cover: 120 Surpass

Rocker Cover: GF30

Rotor Stop Holder #2K 74

Cap Screw 5x25mm (10): GT55

Throttle Lever #2F #2FB

Stator Assembly: 5020-490 .40

Inner Head O-Ring O.S. T1204 (S30-FKM)

Carburetor Reducer, 6.5mm: OS Speed B21 Pink Rhonda Drake Edition