Couldn't find the logic in almost $1000 for a slipon, so I modded the stock pipe. Removed the peashooter and drilled 8x 10mm holes in the back pipe (not the cover). Doesn't sound as loud as a Saintune (can be modded further tho if you want a louder/deeper sound) but it didn't cost me a cent and makes riding in peak hour a bit safer. Crumby sound/video quality tho, it does sound better in real life.
Suzuki DL650 V-Strom, modded, V-twin sound