New for 2015 is the SB1 baffle configuration. We recommend this if you plan on only upgrading slip-on mufflers for 2010-2015 stock touring. Tuning is usually not required but we recommend checking with your local shop/tuner for recommendations specific to your bike.

http://www.rushracingproducts.com/big%20louie.html (link to big louie page)
http://www.rushracingproducts.com/catalog/index.html#8 (link to SB1 page in catalog)

Touring baffle recommendations:
10-15 - SB1
2009 - 2.25"
07-08 - 2.00"
95-15 with aftermarket headers - 2.25"