The Vance and Hines S4's are not made any longer but I chased down a new set and installed those guys last week and man that thing came alive .

Me thinks though the SH years that possibly due to noise levels each year model after 2001 got more and more restictive inside the factory pipes . It's been along time since a simple pipe swap woke a motor up like this did and thats without rejetting .

The motor is now fogged down for storage and the engine I built with pistons, cams , port work is in . Need to finish it with carbs but geeze ... Old Man Winter has hit .

Thats OK , new motors like running in at 35F ambient LOL It's the feet that don't care for it all that much !