compression / torque spring -NARAKU- +1500 rpm for GY6, Kymco, Honda

The current version of the NARAKU back pressure spring uses a modified alloy of the spring steel and has a special marking of the spring type.

A change becomes necessary as soon as the performance increases due to a tuning measure. Noticeable by slipping V-belts or engines not spinning out. The back pressure spring is always in close connection with the variator. If a different spring is fitted, this will affect the shifting behavior of the variomatic. Unlike other manufacturers, the NARAKU springs indicate the speed shift at which the variator will shift if the rollers in the vario are not changed. This allows a much more precise selection of the correct spring than a percentage specification. A 1500 spring will therefore make the vario change its ratio about 1500 rpm later._{AI-translation}