This new package will get you the best look you can get out of your Polaris snowmobile! the kit comes with the following : 
New Seat 2.0
Underseat battery housing with light routing tunnel
Underseat ''U'' bar
Tail light (made to fit six 3mm red led bulbs, not included)
Rear bumper
Front bumper 
Running boards
Rear snowflap holder
Polyester snow flap square (you carve your own style!)
 
Comes as a replacement of the original seat and is the best way to seat the battery properly in the snowmobile.   
 
This kit is installed with a few M2 screws (stainless)
*screws not included
*rear bumper comes as 2 parts
 
The seat can easily fit a lipo 3s 2200mah (from my testing)
I highly recommend you add velcro to protect the battery from damages and moving around the snowmobile.