O.S. Engines

Prop Nut 1/4 20-61

Rocker Arm Assembly: 200 Surpass

Throttle Arm Assembly: 40L, 55HZ Hyper

Valve Spring: FS-70 91SII

Stator Assembly: 5025-375 .50

Motor Mount: FS91SII, FS110 Pump

Rear Bearing: 61-300

Carburetor Screw: FS61-FT300

Connecting Rod: FT-120, 160

Crankshaft: 91HZ-R Speed 3D 3C

Cylinder & Piston: B21 Speed Adam Drake

Heat Sink Head: 21TM

Gasket Set: 25XZ

Mixture Control Valve #20K

Rotor Stop Screw #2FB #2F

Slide Valve 22C(B): Speed B2102

Outer Head O.S. Speed R2106

Piston/Sleeve Set: OS MAX-21 V2

Motor Mount: 15LA

Powerboost Pipe: III 50, 55HZ-H

Bearing Rear: 65AX

Rear Bearing: 108-160

Carburetor Screw: #103A2A

Connecting Rod Plate: GGT10