- Joined
- Oct 28, 2014
- Messages
- 2,031

Opinions please.
So you have some that fit all 750 commando heads, not just combat?There's a couple out there now. I'm running them in my 750 and there seems to be more punch all the way through the RPM range (and the exhaust note seems a little more expressive) but mine also have the benefit of a little cobra head porting. Floors for 30mm ports are currently being tested and they give more mid range punch but need a little cobra head shape to give increased top end. The 32 D shaped port floors don't need any porting unless you're on the track and want it all. Hopefully some people will post their feed back when more get out there. These raised floors are copies of the HD XR 750 port floors and that should tell you something.
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The HD XR 750 raised floor we're copying:
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Below is the HD XR cobra head shape. This sample is for full race, a little extreme and and is further than you need to go. You only have to take out approx 1mm on each side to make it higher and wider around the guide (blending in with the original shape at the manifold and the bowl).
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