can someone tell me what these are and are they worth it? Since my accident ive had a lot of time to customize my bike and get it ready for the road again. Ive ben doing a lot of reading and ran into these mods. I havent been able to read anything yet on what exactly they are but i have read a lot of mixed reviews. Thanks!

 

Hey,
I think the flapper mod is a litre-bike only mod. I konow you can disable the EGR system and remove the air duct resonators, butr not sure what the gains would be if any.

 

Ive already cut the air silencers off and patched the ram air tubes so the air will flow straight in. I dont mind the extra noise of air. Like it actually. When I finish my bike I will let everyone know what I think of the 'no air restriction'