JIM1

Thanks Roelof, I do mean fins. Just wanted to clear that up as I was unsure. I have a re-built Serpent 960 with a Mega ZX21 DS2 EM with a Novarossi 2052 pipe and 5 fin manifold. Would this suit a medium size track that requires low to mid range power?

Regards.

Roelof

The 5 fin manifold is the shortest manifold, On a medium track you can try the medium (6 fin) manifold