JSP ALL OUT MX HEAD INSERTS
Custom 5.2cc billet inserts.
Maximizing the full power of your race engine with more over rev and mid/top end power for those wide open outdoor tracks.
Housing a smaller 10mm spark plug optimizing combustion efficiently.
Smaller squish band requiring the cylinder to be raised 0.2mm-0.3mm over stock height.
Set to OEM squish specs 75mm-85mm.
NOTE- Requires NGK LR8B spark plug
Regular price$95.00
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JSP ALL OUT MX HEAD INSERTS
JS Performance
Pickup available, usually ready in 24 hours
W435 Coyote Road
Fountain City WI 54629
United States
+15074594538