*The installation of the Hyper Center Spring requires special tools and expertise, so please have it installed by someone who is familiar with the maintenance work, such as a shop that handles WirusWin products.
Hyper center spring for NMAX. We have prepared the center spring to increase the power of the exhaust for NMAX [EBJ-SE86J] made by Wilswin. It is best suited for high performance exhausts. The spring force has been strengthened by 7% compared to the stock type. The same effect can be expected with a stock exhaust as well as a third party's one.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
The wiruswin spring is at most right,it is longer and stronger ifound it not really suit my Yamaha nmax cvt settings. if i used it i may need to change the roller weight,furthermore i didn't xpect the spring is too hard it might reduce the life span of my belt and others sooner. because of so i changed the spring to Indonesia ktc 1500rpm spring.even so i admit that the spring is very well made, the quality is very good.View Detail
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