Description
Cylinder Kit Doppler 50cc Alu ER1 MBK 51 AC.
Cylinder kit including cylinder (complete with piston) and cylinder head plus head gasket. The ER1 cylinder from Doppler is regularly sold solo without head. We have combined the cylinder with the matching cylinder head, also from Doppler, and a head gasket, so moped riders who need a complete kit can find what they are looking for without too much searching.
The ER1 cylinder is probably familiar to many moped riders: a Nikasil-coated aluminum cylinder with 5 transfer ports and an exhaust with boost ports, including a 1-ring piston. Torque is pretty awesome especially in the mid rpm range, and even at higher rpms the cylinder also develops plenty of power. In terms of tuning level, the cylinder falls into the sport or lower-end racing range.
The ER1 can be used with the original head, but you'll get even more power by combining it with a HC cylinder head. Thus we added a matching cylinder head (high compression, without decompression) and a cylinder head gasket from Doppler.
Contents:
How to Install a cylinder on a scooter, motorcycle or moped
The cylinder or cylinder kit is the heart of the engine on scooters, motorcycles and mopeds. It consists of a cylinder, a piston with piston ring(s), a cylinder head and gaskets needed for installation.
The service life of a cylinder depends on whether it has been fitted correctly.
Tuning Level: Racing
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.
Racing products are designed for a more extreme uses and are developed primarily for racing. Whether you stay at 50cc or increase the displacement, the corresponding Racing parts produce much higher performance than the original parts in order to achieve maximum power.
Aluminium cylinders
Aluminium cylinders are more powerful than cast iron cylinders, but require more regular maintenance and must be combined with different components such as a reinforced crankshaft and a larger carburetor.
How to run in an aluminium cylinder?
Aluminium cylinders should be run in for about 200 kilometers , and you should use a fully synthetic engine oil.
Note: To ensure optimum performance and reliability, it is advisable to measure the squish clearance. Just have a look at our tutorial How to adjust squish clearance.
