JSN/TPE/CPI Domes

These domes are precision machined to keep your engine running and performing its best!  These domes are designed to work with JSN cylinder heads but also fit original style TPE/CPI cylinder heads (both cast and billet).  Domes include bottom and top o-ring.  Note: These DO NOT fit new style Torrent heads.

Domes are sold individually.  2x per engine required.

If you aren’t sure which dome is right for your engine, just reach out and we’ll help get you sorted.  Below is a chart of domes for JSN engines.

JSN1200:

• Pump Gas: 120/60
• 50/50 Pump/Race: 120/43
• Race Gas: 120/36

JSN964:

• Pump Gas: 020/40