Naraku HS Racing variator for scooters with 4T Kymco or 139QMB/QMA engine

When tuning a scooter, you have to pay attention to many things so that you have the best possible performance at the end.
It can happen, for example, that after installing a racing exhaust or a different cylinder, the effective performance of the vehicle decreases, although the performance has increased "on paper".
This is then due to the variator being incorrectly tuned and "upshifting" too early, so that the engine does not reach the optimum performance speed.

We therefore offer you a Naraku HS Racing variator, which is tuned for vehicles with a 47mm (72cc) or 51mm (90cc) cylinder kit.

Technical data:

- Naraku HS Racing for 4-stroke China scooters with Kymco or GY6 139QMB or 139QMA engine and tuning cylinder
- optimized raceways for the vario rollers
- incl. open vario sleeve and speed control disc
- 2 sets of vario weights 16x13mm for tuning to 47mm and 51mm cylinder kits with 5.8g and 6.3g respectively

Scope of delivery:

- 1x variator
- 1x counter-pressure spring
- 1x riser disk
- 1x slide bushing
- 1x speed control disk
- 12x variator weights