Description
HPC Crankshaft Naraku Racing CPI
Crankshaft Naraku Racing HPC for CPI, Keeway, China 2T E2 - high-quality HPC crankshaft from Naraku. Produced according to OEM guidelines of Japanese vehicle manufacturers.
This is an HPC Racing full-circle crankshaft, i.e. the pre-compression in the crankcase is increased, resulting in significantly better cylinder filling. The crankshaft comes with high-quality bearings. This means that the crankshaft can also be used in combination with 50-70cc tuning cylinders.
A special feature of this crankshaft is that the main bearings are already pre-assembled, so the crankshaft only needs to be inserted into the crankcase halves. We recommend heating the halves to do this.
We also recommend ordering new oil seals.
Specifications Naraku Racing crankshaft China 2T
Piston pin diameter: 12mm
Diameter variator stub: 16mm
Thread variator stub: M12
Thread ignition: M12
- Small end bearing: 12x16x16mm (included)
- Main bearing already pre-assembled
How to change a crankshaft?
The crankshaft is one of the main components of the engine and is responsible for the smooth operation of motorcycle, scooter and moped, whether with two-stroke or four-stroke engine. The longevity of the engine depends not only on the proper condition of the crankshaft, but also on the fact that it is properly mounted.
For a correct installation of the crankshaft, we recommend our tutorial: Crankshaft disassembly and assembly.
How can I tell if my crankshaft is Damaged?
A broken crankshaft causes metallic noises, unusual vibrations, leaking oil seals and drastically reduces the performance of the two-wheeler. In any case, the vehicle must be stopped immediately to prevent the damage from getting worse.
Please note that whenever the crankshaft is changed and serviced, you'll have to install new crankshaft bearings.
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.
