This complete kit is absolutely awesome and weighs 30% less then the OE assembly. 

Each rear assembly includes:   

(1) Hard anodized 6061-T6 billet aluminum Quick Change sprocket carrier

(1) Hard Anodized 6061-T6 billet aluminum outer flange cover

(1) Six piece set of Hyperflexx Titanium Series polyurethane Cush Drives with black Grade 8 steel locking flange nuts

(1) Complete set of Superlite grade 5 Titanium sprocket bolts and black Grade 8 steel locking flange nuts

* Rear sprocket not included!

* Must be used with Superlite Quick Change sprocket part numbers 50803R, 50804R, 50805R, 51803R or 51804R

* Carrier is available in a Gold or Black hard anodized finish