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50cc Bike
Article no.: S6-ET175ZKA

Stage6 Cylinder Head Sport Pro 70cc Peugeot AC (Speedfight / Trekker)

Sorry, this Item has been Discontinued

This product is no longer being manufactured, so unfortunately we can no longer offer it.

However, we would like to help you find an alternative. Please take a look at other products within the same category or contact us so we can help you with selecting the right product.


Stage6 Cylinder Head Sport Pro 70cc Peugeot AC (Speedfight / Trekker), spare part for Stage6 Sport Pro 70cc cylinder (d = 47.6mm) for Peugeot AC.

Detonation and debris in the engine can cause serious damage to the cylinder head; if the damage is too extensive, performance will suffer considerably. In a lot of cases, it is sufficient to simply replace the head instead of replacing the complete cylinder.

This is the replacement for the original head of the Stage6 70cc Sport Pro cylinder kit.

Questions about the product
Notes and Safety

Stage6 Sport Pro

The Sport Pro series from Stage6 consists of various CVT components. The variator, clutch, V-belt and complete kit are designed for sport and racing setups.

Stage6 has revised shapes and materials to improve the performance of the CVT compared to the original and to adapt it to the performance increase after installing a sport cylinder.

Cylinder head

The cylinder head of an internal combustion engine can have different shapes and contain different elements, depending on the type of engine. While in a two-stroke engine the cylinder head contains only the spark plug, in a four-stroke engine it is much more complex, as it also contains the valves, the camshaft and many other parts that are important for the operation of a 4-stroke engine.

However, these two points apply to any cylinder head:

  • it must be tight
  • it controls compression

Different types of cylinder heads

Each cylinder head is specifically designed for a specific cylinder. You must therefore always make sure that the cylinder head fits the cylinder.

Cooling :

The cylinder head is also partially responsible for cooling the engine. In air-cooled engines it has fins on the outside and in liquid-cooled engines there is chamber for the circulating coolant.

One-piece or two-piece 2-stroke cylinder head

One-piece cylinder heads are the most common, but modular two-piece cylinder heads are also available for 2-stroke engines. The principle is quite simple: the water jacket allows water circulation, while the combustion chamber insert closes off the combustion chamber. The cylinder head can be replaced and modified to achieve different compression ratios and thus different engine behavior.

4-stroke cylinder head

Tuning cylinder heads can also be found for four-stroke engines. Although components optimized for motocross are seldom found on the market (usually they are original components that have been reconditioned to increase performance), there are also racing cylinder heads for scooters and motorcycles. These often have optimized intake and exhaust ports and sometimes even seats for larger valves.

Tuning Level: Sport

We categorize our products into different performance levels  Original, Sport, Racing and High End , so that our customers can choose the right parts for their setup. It is really important to combine parts that belong to the same tuning level, this is especially true for cylinders, crankshafts and exhausts.

The products listed under Sport yield better performance than Original parts. They may have technical differences, such as the use of higher quality materials, a larger displacement or a performance-enhancing design. They are suitable for everyday use and have a long service life.

Technical details
Stage6 Cylinder Head Sport Pro 70cc Peugeot AC (Speedfight / Trekker)
Article no.S6-ET175ZKA
Weight0,54 kg
SeriesSport Pro
Product typeCylinder head
Tuning levelSport
Bore47,6 mm
Conrod lengthStandard
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