Honda/Acura K-Series RBC-1 Cylinder Head – Forgotten but Full of Potential

This is an RBC-1 casting K20A2/K20Z1 cylinder head, found on:

2002–2004 Acura RSX Type-S (K20A2)

2005–2006 Acura RSX Type-S (K20Z1)

This head was left behind at HeadGames years ago—call it abandoned; we call it a second chance at glory. It’s missing cams, cam caps, rockers, and lifters, but the core casting is in great shape. One side had the valve guides removed, but that’s nothing we can’t fix.

Highlights:

 Authentic RBC-1 Casting – Ideal for high-revving NA builds or boosted K-swaps.

 Missing Valve Guides on One Side – We’ll press in new ones and give it the HeadGames treatment.

 No Other Issues Present – No cracks, no cam journal wear, no drama.

 Clean, Dry-Stored Core – It’s been chilling in our shop for years—now it’s ready to get back to work.

 No Cams, Caps, Rockers or Lifters – A bare casting, ready to be built your way.

Let’s finish what someone else started.
We’ll quote you for a full rebuild including guides, valve job, milling, and expert assembly to your spec—street, track, or all-out race. This head’s been waiting long enough. Let’s give it purpose.