Cylinder Kit Radical Racing 70cc Stealth Derbi D50B0

Cylinder Kit Radical Racing 70cc Stealth Derbi D50B0
129,90 €

Cylinder Kit Radical Racing 70cc Stealth Derbi D50B0

 

The Radical Racing 70cc Stealth is built for durability and everyday reliability rather than chasing maximum peak power. Its cast iron construction makes it tough and long-lasting, with a hard bore surface that can withstand minor piston seizures – and can even be re-honed if deeper scratches occur.

Power delivery is well-balanced between torque and top-end, making it ideal for street setups that combine performance with dependability. The cylinder head is designed specifically for Derbi Euro 4 engines, with a direct-fit thread for the temperature sensor (no adapter required).

A fun detail: the cylinder still carries the original “50cc” marking from casting, but don’t worry – performance is true 70cc.

For best results, we recommend pairing this kit with a Radical Racing Stealth, Sport, or Sport Carbon exhaust. 

Technical Specifications

  • Stroke: 40 mm

  • Bore: 47 mm

  • Displacement: 69.4 cc

  • Material: Cast iron

  • Piston: Aluminium piston, 2 rings

  • Cylinder head: One-piece aluminium