OS Engines

Rear Adapter Fixing Screws (10): 21TM

Main Shaft: OMA3825-750W

Cylinder Head with Valve: FS-91-P

Carburetor Body: #21C

Intake Pipe Assembly: FS-120 SP

Mid Bearing: 120-240

Outer Head: B21 Speed Adam Drake

Valve Spring: F90 160

Drive Washer: FS-95V8

Cylinder Brass Head Gasket: 75AX

Cylinder & Piston Assembly: O.S. Speed R2105

Steering Arm: 21XM

Piston Pin: 50SX-H

Piston Ring: FT-300

Muffler Assembly Screws #E-2050 (4)

Exhaust Header Pipe Assembly F-5050: FS-95V

Piston Pin: GF30

Motor Mount: FT120, FT160

Front Bearing: 61FX

Crankshaft: O.S.SPEED R21GT2

Dust Cap Set: RZ-V P

Mixture Control Valve #70C: FS120 Surpass II

Head Gasket FS155A-P

Choke Valve: 120-300