OS Engines

Connecting Rod: 37SZ-H

Rear Bearing: 21VZ, 30VG

Heat Sink Head: 30VG

MAX-R21 V2 COMBO SET

Connecting Rod: 56 FS

Valve Spring: FS-70 91SII

90 Degree In-Cowl Header: FS110A

Gasket Head, .2 Aluminum: 21XZ-R

Carburetor #10G: 15LA

Carburetor Reducer 6.5mm, Red: B2101 Speed

Cylinder Liner 91HZ-R Speed 3C

Crankshaft: O.S. Speed T1205

Standoff 5x12.7mm 1/2" (4): GT55

Crankshaft Ball Bearing, Rear: Speed 21 V-Spec

Gasket Carburetor: FS-120

O.S. Speed R21GT2

Inner Head With O-Ring: O.S. Speed B2104

TUNED SILENCER COMPLETE.TR03 EFRA2196

FS155-a Alpha Series 1.55 4-Stroke Pumped Engine

Connecting Rod: FT-120, 160

Needle Assembly #60R

Gasket Carburetor: #60B

Rocker Arm Shaft: FS-95V

Gasket Set: 50SX-H