O.S. Engines

Valve Throttle WLA-2: GT55

Carburetor Complete 21M4(B) W/O Reducer

Needle 2 12F

Crankshaft: O.S. Speed T1205

Needle 3 (21M)

Cylinder & Piston Assembly O.S. Speed R2106

Carburetor 2F6(B)

Heatsink Head 55HZ.HZ-R

Piston/Sleeve Set: OS MAX-21 V2

Connecting Rod O.S. Speed R21

Outer Head O.S. Speed R2106

Piston/Sleeve/Rod set: O.S. SPEED R2106

Slide Valve 2 (21M)

Cylinder Liner 91HZ-R Speed 3D

Needle Assembly #40N

Remote Needle Bracket: 160FX

CYLINDER/PISTON SET O.S. MAX-B21

Cylinder, Piston, & Rod Set: R2105

Outer Head: O.S. Speed B21 Ronda Drake Edition 2

Carburetor 21M3(B) without Reducer: Speed R2105

Crankcase: O.S. Speed R2105

Cylinder & Piston Assembly: O.S. Speed R2105

Main Metering Needle (2 oring): 21M3(B) Speed R2105

O.S. Speed B21 Ronda Drake Edition 2 3.49cc Nitro Engine