Athena Racing 80cc 50mm Cylinder Kit – Derbi NT D50B0 from 2006 LC

The Athena Racing 80cc 50mm cylinder kit is a high-performance upgrade for Derbi NT D50B0 engines from 2006, including Euro4 versions.

With a 50 mm bore, this cylinder increases displacement to approximately 80cc, delivering significantly more power and torque compared to the standard 50cc setup.

Manufactured from aluminium, the cylinder features premium finishing and is equipped with an oval exhaust port and 2 booster ports for optimal gas flow and strong mid- to high-range performance.

The kit includes a modular cylinder head consisting of inner and outer head parts for efficient cooling and improved combustion.

Technical specifications:

• Brand: Athena
• Series: Racing
• Engine type: Derbi NT D50B0
• Production year: from 2006 (including Euro4)
• Displacement: 80cc
• Bore: 50 mm
• Material: Aluminium
• Cooling: Liquid cooled (LC)
• Exhaust port: Oval with 2 booster ports
• Tuning level: Race / Performance

Supplied including:

• 50mm aluminium cylinder
• Inner cylinder head
• Outer cylinder head
• Gasket set
• Coolant nipple
• Piston
• Piston rings
• Wrist pin
• Wrist pin clips

Spare parts:

Piston:

49.96mm Athena Racing Derbi NT D50B0 Piston

Also known as Athena 80cc Derbi D50B0 cylinder, Athena 50mm Racing Derbi NT kit or Athena 80cc Euro4 Derbi cylinder kit.