British Customs Tip

Rkt120 · Jun 22, 2021

Evening all, I have purchased some British custom exhaust tips they are literally hollow tips, theoretically as that’s the case you could just remove the standard pea shooters and just have nothing as it’s no different to adding the tips? Unless someone can enlighten me.

Iron · Jun 25, 2021

Yep, they are for show and noise.
You'll get a load more sound and easier access to chain etc for cleaning. Obviously depends on what bike you have but they will probably effect performance. Free flowing zorsts may make it run leaner so carbs will need a fettle, fuel injection may need a remap. You should get a few more horses but lose a few torques.
If you stick in some baffles (they come in various sizes to go inside the downpipes) you'll get the back pressure back and help the really annoying noise.
If you enjoy the noise but want the back pressure then you can make up an adjustable piece that bolts into the downpipes. Basically a disc on a bolt that can be adjusted as shown in the attached

https://www.tabperformance.com/Reduce-Back-Pressure-Exhaust-s/203.htm

British customs do something called a quiet core that knock off a few decibels