Airsal Cylinder Kit "Sport" 80cc aluminium Derbi Euro 3 (D50B0)

80cc "Sport" Cylinder Kit (d=50mm) by Airsal.

The cylinder is made of Nikasil-plated aluminium and has 6 transfer ports, a bridged exhaust port; it comes with a high-compression monobloc cylinder head and a two-ring piston (d=50mm).

As a "Sport / Mid Race" cylinder, it has a lot of torque and good acceleration, especially in the mid rpm range. To get the most out of it, we recommend using a 17.5mm or even 19mm carburetor and a sports exhaust (such as Yasuni R2/Cross HM, SCR H.M, Metrakit RK Replica/SP, MVT Carrera, BRK, etc.). Just like with all aluminium cylinders, it is really important to adjust squish clearance to ensure reliability and performance of your engine (cylinder manual will tell you the proper value for squish).

d= 50mm / 80cc (=> exactly 78.5cc) = not street-legal.