Hy guys, can you help me out?
i take my rear wheel off and that's what i saw.

Do i need change cush under warranty or they good to go?

http://img21.imageshack.us/img21/9121/photo0049d.jpg

http://img196.imageshack.us/img196/6523/photo0050v.jpg

The bike has 17 000 km and this is my first job with this bike.

Sorry for bad english and hope you can help