OS Engines Speed Tuned R2105 (V2)

New OS Speed R2105 replacing the O.S. SPEED R2104.

• Newly design crankcase
• Newly design crankshaft with counterweights of 5mm
• Newly design 9 port liner to go along the new crankcase design
• Cylinder head now with single color finished in polished silver
• Silicone O-ring in the inner head prevents the dirt coming inside and provides better sealing
• New backplate with steel thrust plate
• New main-needle design with double o-rings for more tuning stability
• New shaped idle-needle for better torque in the low rpm area

Technical Specifications:

Displacement: 3.49cc

Transfer Ports: 9

Crankshaft Type: 14mm SG

Carburetor Type: 8.5mm Slide

Material: Aluminium

Adjustment Needles: 4

Glowplug Type: Turbo

Exhaust Position: Rear

Fuel Type: 16% (Recommended)