Decent Exhaust Spring

Used for external exhaust system of GSX1300R GSX1300R HAYABUSA

When the exhaust system was replaced with an external exhaust system, the chatter sound of the Gold genus became more loud when the RPM was raised, so it was introduced as a countermeasure against resonance/interference noise.

This product is a type of spring whose Hook rotates freely, just like the springs that come standard with AKRAPOVIC and YOSHIMURA.

It also comes with a Rubber for sound control.
(Although it is shiny and the texture is not so good.)
It seems to have good heat resistance for normal use, but if it is pressed against Cowl or other parts and directly hits the exhaust pipe, it will melt, so care is required.


The spring itself is SUS with a relatively large wire diameter, so it can be tensioned firmly and is rust-resistant and solid.


The Spring is generally as it looks, but one thing to note is the installation length.
Size100mm" means the free length is 100mm.
Note that Tension is not applied unless it is used with some extension.
As per Q&A, it seems that the mounting length is intended to be 120mm.

I tried to install it, but it was a little loose, so I went with the company's M size. (85mm) I bought a new one.


Neck would be the price.
I understand that it is a solid product, but it is a little expensive.
A 4-cylinder Full Exhaust System uses more than 10 springs depending on the type, so the spring alone will cost more than 10,000 yen.
It's a little tough, as you'd expect.

However, the product is solid, and from a quick search, it seems that this size cannot be diverted from AKRAPOVIC or YOSHIMURA's Repair products, so it would be the best solution for those who seek quality over cost. View detail

Spring is well made and reliable!

This product is very well made and reliable, and the fact that it is scratch resistant even when gripped by radio pliers is also a high point! View detail

In order to take the pure silencer of the nojima sc to automobile inspections, the silencer of the manufacturer difference was purchased, but the spring did not suit and purchased. It became without a metallic sound also carrying out a size by vibrati

In order to take the pure silencer of the nojima sc to automobile inspections, the silencer of the manufacturer difference was purchased, but the spring did not suit and purchased.
It became without a metallic sound also carrying out a size by vibration like [ former ] by a cinch. View detail

Since the spring of the external muffler was likely to rust and go out, it exchanged. A life comes out for a long time, and a stainless's is safe at that which does not rust easily (it may rust). Both ends attach this spring by that [ fixed type (

Since the spring of the external muffler was likely to rust and go out, it exchanged.
A life comes out for a long time, and a stainless's is safe at that which does not rust easily (it may rust).
Both ends attach this spring by that [ fixed type (it consists of one stainless lines) ], and if it is a general muffler although the degree of freedom at the time is not high, I think that it is satisfactory.
Rather than it, a problem takes power remarkable for lengthening 15 mm or more to the die length.
Probably, it will be better to take care at the time of purchase. View detail