Stage6 Streetrace 50cc Cylinder Kit 39mm – Derbi D50B0 Euro 3 / 4 – Cast Iron

The Stage6 Streetrace 50cc cylinder kit is a popular sport / midrace upgrade for Derbi D50B0 50cc 2-stroke engines (Euro 3 and Euro 4, from 2006). This cast iron cylinder delivers significantly more power while maintaining 50cc displacement.

With a 39mm bore and original stroke, this kit produces around 8 hp, approximately 3–4 hp more than stock. Perfect for improved torque, acceleration and top speed.

The piston is manufactured by Vertex, ensuring high durability and quality. The cylinder features a discreet OEM look, ideal for daily use.

Technical specifications:

• Brand: Stage6
• Series: Streetrace
• Article number: S6-7119301
• Displacement: 50cc
• Bore: 39mm
• Stroke: Original
• Material: Cast iron
• Wrist pin: 12mm
• Spark plug thread: M14 long
• Transfer ports: 5
• Tuning level: Sport

Supplied including:

• 50cc cast iron cylinder
• 2-ring piston (with rings and clips)
• Aluminium high-compression cylinder head
• Gasket set

Also known as Stage6 50cc Derbi Euro3 cylinder, Streetrace 50cc D50B0 or Stage6 sport cylinder for Derbi from 2006.