O.S. Engines

Exhaust Gasket: 21RZ

Piston Pin Retainer: 50SX-H

Needle Metering 21M: 21XZ-R VII

Needle: #60B

O.S. Crankcase OS Speed R21GT

Cam Assembly Screw Set: SIrius 7

Front Bearing: 40-240

Crankcase: 19XZ-B Speed

Rocker Cover: 200 Surpass

Thermo Insulator, 11K: 18TM

Gasket Set: FS-120 II

Cover Plate Gasket: 55HZ Hyper

Bearing L-1040X2ZZ

Standoff 5x31.8mm 1-1/4" (4): GT55

Intake Pipe AS-L: FT-120 and FT-160

Head Gasket: FF-320

Cover Plate Assembly: GGT10

Connecting Rod: 140RX

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

Needle Assembly #7H #7F

Back Plate: 40-46 LA

Connecting Rod: FT-120, 160

Crankcase: R21

Rotor Stop #4B #4D #4C