This part is a Muffler. 
There is damage to the part as shown in pictures 5 and 6. 
The item came off of a 1993 Yamaha Badger 80. 
Item Manufacturer Part Number is 3GB-14711-00-00. 
If you have any questions, please feel free to contact us. 
If our price is not competitive, please contact us, or make an offer! 
-Blue Collar Sales and Service

This Yamaha 3GB-14711-00-00 MUFFLER 1 fits the following models and components:

Yamaha ATV 1990 CHAMP - YFM100A Exhaust

Yamaha ATV 1992 BADGER - YFM80D Exhaust

Yamaha ATV 1993 BADGER - YFM80E Exhaust

Yamaha ATV 2001 BADGER_REALTREE_HUNTER - YFM80N1 Exhaust

Yamaha ATV 1994 BADGER - YFM80F Exhaust

Yamaha ATV 1991 CHAMP - YFM100B Exhaust

Yamaha ATV 1989 CHAMP - YFM100W Exhaust

Yamaha ATV 2001 BADGER_REALTREE_HUNTER - YFM80NC Exhaust

Yamaha ATV 1997 BADGER - YFM80J Exhaust

Yamaha ATV 1996 BADGER - YFM80H Exhaust

Yamaha ATV 2001 BADGER_REALTREE_HUNTER - YFM80HN Exhaust

Yamaha ATV 2000 BADGER - YFM80MC Exhaust

Yamaha ATV 1999 BADGER - YFM80L Exhaust

Yamaha ATV 1998 BADGER - YFM80K Exhaust

Yamaha ATV 2000 BADGER - YFM80M Exhaust

Yamaha ATV 1995 BADGER - YFM80G Exhaust