Description
Stage6 Piston Ring 50mm Big Racing 77cc / 88cc, spare piston ring for Stage6 Big Racing cylinder kits.
Piston rings should be replaced on a regular basis. You can check the piston ring groove for clearance and wear, and if necessary replace the ring(s). Worn out or damaged piston rings cause the bike to lose power, produce more smoke, and will cause the jetting to appear rich. In some cases it is sufficient to simply replace the ring(s) instead of the entire piston
We recommend to slightly lubricate ring and piston before reassembling the cylinder.
Stage6 BigRacing cylinder
The Big Racing cylinders are extremely powerful cylinders for 50cc supermotos. Although they are very powerful high-end cylinders, they offer a good balance of performance and reliability for intensive, regular, even daily use.
The aluminium cylinders have a displacement of 77 to 88 cc (with the corresponding crankshaft ) and were mainly developed for 50cc motorcycles with Derbi and AM6 engine, e.g. Rieju MRT, Beta RR or Sherco.
In combination with a suitable exhaust, a complete intake system and a suitable gearbox, the BigRacing can achieve maximum power with maximum torque and increased top speed.
The Stage6 R/T series delivers even more power, with uncompromising performance for use on the race track.
technical data :
- Aluminium cylinder
- 1-ring piston
- Original big bore design (not simply opened up)
- Transfer ports and compression designed for maximum reliability
- 77cc displacement for crankshaft with original stroke
- 86cc or 88cc cylinder for long stroke crankshaft
- One-piece cylinder head
- Discreet design with 49ccm lettering
- Also available as a kit with exhaust or crankshaft
- All spare parts available separately (pistons, gaskets)
piston ring
Piston rings are sealing elements. They are inserted into the grooves of the piston to ensure sealing between the piston and the cylinder wall. Piston rings vary in size and shape and can be chrome-plated or cast iron, depending on the type of cylinder.
2-stroke piston Ring
The upper ring (often chrome-plated) is fireproof and seals the combustion chamber. The lower ring provides lubrication to the cylinder liner. 1-ring pistons perform both functions, but this results in a shorter service life.
4-stroke piston Rings
The upper ring also has the function of sealing the combustion chamber, while the middle ring collects excess oil and contributes to engine compression. The lower ring, known as the oil scraper ring, prevents engine oil from entering the combustion chamber.
Piston rings play a crucial role in the proper functioning and service life of the cylinder, whether on a motorcycle, scooter or moped.