OS Engines

Cylinder Liner: FS-40

Fuel Inlet: #61B, 91HZ

Intake Manifold Assembly: FS-91 Surpass II

Needle Valve Holder Assembly: 91SZ-H Hyper

Pushrod Cover Assembly: FS72 Alpha

Pushrod Cover Set: Sirius 7

Piston: 70SZ-H

Piston Pin; FS-62V

Slide Valve 2 (21M)

Piston/Sleeve/Rod set: O.S. SPEED R2106

Heatsink Head 55HZ.HZ-R

Cylinder Liner 91HZ-R Speed 3D

Pump Unit PD-08: FS-200S-P

Camshaft Bearing: F 40-120

Carburetor Body: #10H

Carburetor Body: 40L, 55HZ Hyper

Connecting Rod: 21VF/SE

Connecting Rod with Bearings: GT60

Crankcase: FS81 Alpha

Crankshaft: FT-120 160

Cylinder Head with Valve: FS-91-P

Exhaust Gasket: 55HZ

Cylinder Head Gasket: 25AX

Insulator, 60K