Description
Get this engine pack Full Doppler ER1 MBK 51 LC to bring the performance of your moped to the next level. The carefully assembled tuning components (cylinder, crankshaft, exhaust, variator) come from moped specialists Doppler, fit together perfectly and guarantee top performance and high reliability.
The ER1 cylinder is a sport / racing aluminium cylinder with Nikasil coating with 6 transfer ports and an exhaust with boost ports, with 1 piston ring. It comes with cylinder head. The cylinder has excellent torque in the mid to high rpm range.
The Endurance crankshaft is a great match for the cylinder, it is a high quality racing shaft with FAG piston pin bearings, suitable for sport and race engines up to 13,000 rpm. Also included in the kit: crankshaft bearings + oil seals reinforced C3 cage polyamide MBK 51 / 88. This set includes 2x 6302QR bearings and 2x crankshaft seals.
The engine is supported by an ER1 exhaust, also from Doppler. Classic clear painted tuning exhaust with chromed aluminium silencer. The system yields a significant increase in power, especially in the mid and high rev range, and is therefore a perfect match for the ER1 cylinder.
And that's not all - a variator / CVT is also included in the pack. The ER3 is a high quality variator for MBK 51 mopeds (without clutch function). It is an oversize variator designed for 50cc and 70cc race engines. The weights are screwed onto a retaining plate on the outside, a suitable Allen key is supplied. 12 weights are included. Note: This variator cannot be used with the original clutch.
Contents of the engine pack:
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.
