MINI Cooper S R52 R53 Supercharger Pulley Kit Belt Plugs - KAVS 15% / BKR6EIX

LW denotes that it is a Lightweight pulley, which is approx 50% lighter. KAVS Standard. KAVS Lightweight. You, therefore, do not suffer the effects of 'turbo-lag' (where there are not enough exhaust gases to compress the quantity of air required lower down in the rev range).