O.S. Engines

Crankcase: 21XZ-B

Cylinder Rebuild Kit: R2101 Speed

Outer Head: 19XZ-B Speed

Air Filter: INS

Carburetor Body: 21J3

Connecting Rod: Speed B2101, B2102

Gasket Head Aluminum, .2mm: 19XZ-B Speed

Thermo Insulator, 11K: 18TM

Gasket Head, .1 Brass: 21XZ-R

Rear Adapter: 18TM

Speed Flywheel Puller

Head Gasket: 0.1, 0.15, R2101 Speed

Metering Needle Assembly 18TM

Piston Pin: 19XZ-B Speed

Screw Set (8): 15CV-A

Carburetor Body: #21C

Crankcase: R21

Carburetor Reducer 8mm, Red: Speed 21 V-Spec

Rear Bearing: 12TR

O.S. Pistion Pin: .12XZ

Crankshaft: 21XZ-R

Cylinder & Piston Assembly: 21TM

Head Gasket: 30VG

Mixture Control Valve 18TM