Cylinder kit Stage6 Big Racing 77cc - D50B0

Advantages of Stage6 BigRacing cylinder Simple installation: Installation is particularly straightforward as no milling work is required on the engine block. Squish clearance is optimized for the respective engine type. High performance: 23 hp and 13 Nm were measured on the P4 test bench with a standard setup (24 mm carburetor, original ignition, racing exhaust). Robust and reliable: The cylinder's port timings (190° - 125°), the large cooling volume and the high-quality Vertex piston ensure high reliability - provided that the setup and settings are right. Use Stage6 BigRacing cylinder Displacement is 77cc (50mm piston), i.e. not street legal. You should use a reinforced crankshaft with standard stroke. From the outside, the cylinder is a replica of the original cylinder with a stamped 49cc mark; but don't worry, it is clearly a 77cc cylinder. Note: we recommend using "long" cylinder head nuts to be able to tighten the head properly. Without road approval. Scope of delivery Stage6 Big Racing 77 77cc aluminum cylinder, with 5 transfer ports and bridged exhaust Vertex 1-ring piston, 50mm High-compression cylinder head, one-piece, aluminum Gasket set (base and head gaskets) Note: Motorcycles with Derbi Euro 4 engines use a slightly smaller temperature sensor (thread: M12 x 1.5) than Euro 3 models (M14 x 1.5). To attach the smaller Euro 4 sensor to the cylinder head