Adam M

After much umming and aaahhhhhing, I have decided to part with the bpm twister back box.

It is in immaculate piece of three inch stainless steel. It has no internal silencers but some strange system which I am yet to understand which twists the air flow by separarting the main exhaust into three smaller diameter pipes each with corkscrew type insert, making them swirl. These three pipes then recombine into one at the tail pipe.

The tail pipe itself also has a bung which is a corkscrew insert held in by one screw which is removable in seconds.

This allows the car to be quieter on the road, but produces a higher pitch sound.

For extra power and noise teh bung may be removed, also for track use. I believe it will still pass noise regs. The noise opens up to a very low rumble which makes teh car sound very powerful.

I have to say I am only selling as I like to change these things regularly. Last time I thought sod the noise. This time I am going for the quietest possible yet retaining as much power as possible. I have some ideas!

Needless to say this box does not have the look or sound for te faint hearted.

Have a look at the bpm website for piccies and further info.

I think they are about £350 tax and in this country, it might actually be more.

I am looking for £225.

Adam M

has anyone looked at this?

I am not desperate to sell this, but I thought it was v interesting ion design.

If anyone wants an adjustable volume setup this is the one to go for. Removable bung, quieter with (still not silnet), loud without

dc911

Hi Adam why are you getting rid of such an awesome looking back box?

I may be interested email me.

Cheers
Darren