z3 under-drive pulleys

[bruce&kim]

Hi got to change the belts on the car and came across under-drive pulleys..Has anyone come across this mod before?

 

[GazHyde]

Not heard of it personally, but trying to figure out what the hell they were led me to this...

http://www.uucmotorwerks.com/udp/udp_info/about.htm

 

[bruce&kim]

The price comes out just below £200 with delivery and includes a new belt,Having had cars with air con i know the power loss that comes with turning it on so might have a go .Thanks for the link Gaz seems a good company bit more info here http://www.uucmotorwerks.com/udp/udp_info/description.htm