Quote Originally Posted by speedjunkie View Post
Dual plugged heads will help the emissions, plus should be able to retard the timing a touch, which will help with heat.

The lowers are great for cutting wind and rain off your legs, but yeah, they sure help hold the heat in the pocket, that's for sure! I normally took them off in the summer. But, the new water cooled models are permanent, they house the radiators.




Mike
Yeap here is what they look like in a parts diagram. I just wounder why HD did not cool the whole head like Honda did with the VTX1800 and only cooled the exhaust ports.