Ultra lightweight underdrive set,set of 3,also including a cdf alloy aircon pulley,all are in excellent condition £130 delivered.

 

im interested in them, will they fit a 1999 sti type r jap import ?

do you know the difference in weight and what power gains

thanks

 

They will fit,not sure on weight difference or power gains.

 

ok il take them

pm me thanks

 

It's been said many time before but a lightweight pulley set, flywheel, etc, etc will NOT give any power gains.
Potentially, it will make the engine more responsive but I'm not convinced a pulley set would be measurable on normal equipment or even whether you could feel the difference or not.