We offer you a cylinder kit for the Yamaha YZF-R125 with three programs stored on the ignition unit "Force Master 1" for the optimal adjustment of the injection to the driving application. With the first program the original ignition...

Naraku 200cc Big-Bore ceramic cylinder kit with 66mm bore and hard chrome plating, suitable for Yamaha WR, YZF-R, MT and many other 125cc with Yamaha YI engine. Supplied as shown with all seals and small parts necessary for assembly. The...

Compared to the 150cc cylinder kit from Naraku, the 177cc cylinder has of course been given an even larger bore which in turn can further optimise the performance of the engine. Since in cubic classes from 160cc on the original ECU...

To get the absolute maximum power out of Yamaha's YI-3 engines, this 62mm Ø Naraku cylinder head is indispensable. More passage, reinforced valve springs and larger valves (21/23mm) let every cylinder with 62-64mm bore breathe properly....

This Athena tuning cylinder kit differs technically only slightly from the cylinder kit that was specially developed for the Yamah a WR 125. The most significant difference between this and the other Athena kit is the mapping of the ECU,...

In addition to the 125cc standard cylinder kit, Airsal also offers a T6 racing version. The main difference of the T6 compared to the 125cc standard cylinder is the improved piston, which significantly changes the combustion chamber...

The Airsal YI-3 cylinder for the Yamaha 125cc engines is supposed to be a cheap alternative to the expensive original cylinder. Airsal not only uses a copy of the original cylinder, but also improves the coating, the piston and the...

If you are looking for a strong cylinder kit for the WR 125, then the Athena 183cc cylinder kit is just the thing. It impresses especially with its durable Nikasil coating and the light cast iron piston, which is made of aluminium. The...