ADM 6 RIB 2 Piece pulley allows higher boost output from the 1.9 liter supercharger.

All pulleys are raw machined aluminum. Pics are just for reference  

This pulley requires the ADM Performance mounting hub.

https://lsa-conversion-store.myshopify.com/products/10-bolt-hubs-for-adm-lt4-and-lsa?_pos=7&_sid=91d31bfea&_ss=r