O.S. Engines

Locknut Set: FS-120 Surpass

Needle Valve Holder Assembly: 91SZ-H Hyper

#10 A5 Glow Plug Cold Air

Silencer O-Ring E3070: 46AX 55AX

Mixture Control Valve: 46AXII

Gasket Set: 70SZ-H

Connecting Rod: 18TM

Control Arm: #9B

Muffler E-5040: GT22

Piston: 61-300

Carburetor Rotor: 91SZ-H Hyper

Induction Silencer .12/.21: INS

Drive Hub: 140RX

Carburetor 21J3-B: Speed B21 Adam Drake

Under Cover Gasket: IL-300 Dia-Star

Crankshaft: GT15

Carburetor Rotor: 70T, GF30

Crankshaft: FT-120 160

Carburetor Body: 21M(B), 21XZ-R Speed

TR02 Tuned Silencer Set EFRA2165

O.S. Inner Head with O-Ring Speed B2103 Type R & S

Pushrod: 200 Surpass

Connecting Rod: 37SZ-H

Outter Head: O.S.SPEED R21GT2