also advise any drawback of installing a lighweight crack pulley. Does it cause balance issues. Is this valuable for long term as compare to the original pulley.
Iswara LMST

this change, pros and cons are very much like light weight flywheel isn't it ?

is this dampened or non dampened pulley

Correct me if i am wrong.
the damper on the pulley comes by default on my car manufacturers whose function is to absorb the vibration caused by pulley/engine
no damper means engine might vibrate more than usual and cause failure in the long run. Damper is just a safety measure to prolong the engine/pulley life.

what do you think ?

Add:
you might wana check the article
He is refering to a BMW but the that goes for all the engines

http://www.atiracing.com/products/dampers/damper_dinan.htm

hi
what is the price for iswara pulley
want to compare with OEM which is about 60rm according to spare part shop in my area
thanks