NOTE! This product is out of stock, but can be pre-ordered, this will result in the delivery time being extended to 3-7 working days (usually 4 working days).

This cylinder has a bore of 50mm , giving a displacement of 77cc when combined with a standard crankshaft with a stroke of 39mm . The kit includes a high quality Vertex piston with a piston ring to ensure durability and performance.

Stage6 have managed to get an impressive 23 hp out of this cylinder, as shown in the power curve in picture 2. This shows that there is great potential, even if you don't have the exact same components as they use. To maximize power we recommend a 19-24 mm carburetor , depending on your other setup.

Although the cylinder has 49cm³ cast on the surface, this is a 77cc cylinder .

Specifications:

• Squish : 0.8 mm
• Torque : 13 Nm at 12,500 rpm
• Power : 23 hp at 12,500 rpm
• Bore : 50 mm
• Stroke : 39.1 mm
• Volume : 77 cc
• Piston pin : 12 mm
• Exhaust system connection : Ø 32 mm

Recommended spark plug :

For best performance, a spark plug with a heat rating of 10° or 10.5° is recommended .