Notice I stole the pictures from wht180 since I don't have any myself.
How To:
Remove the Baffle
The baffle or “pea shooter” is a spark arrester located in your muffler. Its purpose is to fulfill state and federal noise and emission regulations. Removing the baffle should only be done for the purpose of racing and is done at your own risk. Be responsible and follow all your local laws. When you remove the baffle you have NO SPARK ARRESTOR.
Step 1: Locating the Baffle. It is the small tube in the center of your muffler.
Step 2: Remove the brake light with any normal size Phillips Screw Driver.
Step 3: There are 3 bolts to remove on the cap covering the back of the muffler. They are #5 Allen.
Step 4: Now that the Baffle is exposed there are only 2 bolts left. Remove them and pull your baffle out. They are #8 Allen.
The Baffle
Step 5: Reinstall the bolts in the cap that was covering the baffle and the brake light.
“Optional” Step 6: Remove your air box lid.
**WARNING** It is highly recommended that you install a Yoshimura CRBM known as the “Cherry Bomb” when doing this mod. The EFI can not compensate for such a large increase in air flow by it’s self. Your LT-R450 may run lean without it.
How To:
Remove the Baffle
The baffle or “pea shooter” is a spark arrester located in your muffler. Its purpose is to fulfill state and federal noise and emission regulations. Removing the baffle should only be done for the purpose of racing and is done at your own risk. Be responsible and follow all your local laws. When you remove the baffle you have NO SPARK ARRESTOR.
Step 1: Locating the Baffle. It is the small tube in the center of your muffler.

Step 2: Remove the brake light with any normal size Phillips Screw Driver.

Step 3: There are 3 bolts to remove on the cap covering the back of the muffler. They are #5 Allen.

Step 4: Now that the Baffle is exposed there are only 2 bolts left. Remove them and pull your baffle out. They are #8 Allen.

The Baffle

Step 5: Reinstall the bolts in the cap that was covering the baffle and the brake light.
“Optional” Step 6: Remove your air box lid.
**WARNING** It is highly recommended that you install a Yoshimura CRBM known as the “Cherry Bomb” when doing this mod. The EFI can not compensate for such a large increase in air flow by it’s self. Your LT-R450 may run lean without it.