Exhaust Pipe Muffler Tips, Universal 51mm Motorcycle Exhaust Pipe Muffler, Exhaust Silencer Pipe Tips Noise Eliminator Motorcycle Exhaust Tips Exhaust Silencer(style 2)

As advertised. I purchased two of these to quiet down my truck for a cam break and they created enough back-pressure to shoot them both out immediately. I'm sure they work fine on a smaller displacement motorcycle.

Sounded as expected

help with back pressure

Installed on a ZX14 with TRC race yoshimura system. This did noticeable reduce overall DB levels. Also helped with some backpressure which also reduced some of the annoying popping and occasional big bang. A little smoother low speed throttle control. Great improvements for such a little device. On such a large engine there was a lot of improvement. Smaller engines may vary.

Pour mon harley aide a la réduction du bruit .J`ai déja commander un TYPE STYLE 5 donc Pourquoi je vous commanderais un TYPE 4 c`est trop long et l`extrémité intérieur est trop petite et en plus c`est de SECONDE MAIN.Le type 5 est deja installer et parfais donc je demande le remboursement du retour du produit qui a été fais la meme journée que les miroirs de plastique et vous avez déja rembourser pour les miroirs aux nombreuses égratignures qui tiennent pas solidement.Je peux vous envoyer des photos et j`ai les 2 factures du retour des 2 colis qui ont été fais séparement .Il faut que sa bouge un peu ...des fois ca vas vite et d`autres fois sa prends plus de temps pour le remboursement?

This does not reduce the sound coming out of the exhaust at all. It is a big waste of money.

I did not notice the level of noise go down. However, I did notice the amount of deceleration popping is almost gone. Now,I have a great sounding exhaust with almost no deceleration popping.PERFECT!!

Used on my Suzuki 2.3 engine to reduce the noise of my obnoxious exhaust. I was skeptical when I ordered, but it really did dial down the noise.