O.S. Engines

Cam Gear: Sirius 7

Carburetor Rotor: 56 FS

Connecting Rod: 37SZ-H

Crankshaft: 20-25FP

Crankshaft: 55AX

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

Manifold Nut M9

Needle Holder FT-120-300

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

Rocker Cover: GF30

Rotor Stop Holder #2K 74

Cap Screw 5x25mm (10): GT55

Throttle Lever #2F #2FB

Stator Assembly: 5020-490 .40

Needle 3 (21M)

Carburetor Complete 21M4(B) W/O Reducer

Back Plate: 40-46 LA

Muffler Extension: #744B

Needle Ext Cable: FR5 300

Piston Pin Retainer P: 40-46

Carburetor #10G: 15LA

Cylinder Rebuild Kit: 21XZ-GT Speed

#6 A3 Glow Plug Hot Air

Piston: GT15

Dust Cover: 30VG

Rear Bearing: 61RX, SX-H

Gasket Set: 32SX-H

O.S.SPEED B2105 COMBO SET

Cover Plate: O.S. MAX-B21

CYLINDER/PISTON/ROD SET: OS SPEED B2105

O.S. Speed R2105 Engine

CARBURETOR COMPLETE 22E2(B) W/O REDUCER

Cylinder Liner 91HZ-R Speed 3C

O.S. SPEED R2106

MAX-B21 Car Engine Combo Set

Inner Head: O.S. MAX-B21

Carburetor Body: 22E

O.S. SPEED R2106 COMBO SET