Yamaha 90 High Compression Billet Head Kit

Yamaha 90 High Compression Billet Head Kit

Regular price
$770.00
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$770.00
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TSR Yamaha 90 Billet Engine Head Kit best bolt on mod you can do or your outboard  

Our billet head kit has increase cooling volume and improved heat dissipation, with the squish clearance being tighter than stock and designed to be more detonation resistant with overall improved power through the whole rev range with multiple dome sizes to choose from to suit both pump and race gas applications 

This is a direct bolt on kit with no other mods required. (Jetting may be required depending on your application) 

DOME SIZES -  From the drop down menu please select the dome size specific to your application required. 

Kit Includes
Domes
Seals
Please Note The thermostat has been deleted from this head as we have designed this to be a race application head only 

**Requires BR8ES Spark plugs (not included in kit)**

All TSR Products parts are Made & Designed in Australia from 6061 Aluminium.