Extreme Series
 Thunderbolt Extreme Series engines incorporate all the features of the Signature Series, including the individualized team-build and configuration, component, and appearance options.
Extreme Series engines continue to the next level of performance upgrades. Items available for the Extreme Series include significantly increased compression ratio or boost levels. The possibilities offered in the Extreme Series category will expand as Team Thunderbolt works to develop new solutions.
Thunderbolt Extreme Series engines will receive a 1-year/100 hour parts and labor warranty.
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