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Thundermax with Autotune - 2004-2011 HD Dyna / 2008-2010 HD Softail Rocker / 2009 HD CVO Softail Springer / 2010-2013 HD XL Sportster Models

SKU: 309-485
$919.95 Add to cart to see best price! What's this?

FITMENT: 2004-2011 HD Dyna / 2008-2010 HD Softail Rocker / 2009 HD CVO Softail Springer / 2010-2013 HD XL Sportster Models

For our Power Package which includes the Thundermax along with our custom fuel map, Stage 1 air cleaner and exhaust please contact us for immediate pricing at 877-729-4754


Are you a Rider who wants a tuning product you can Set-and-Forget, or do you want a product that satisfies your inner Tinker-itis? Well, when you choose ThunderMax®, you can be either!

For the Set-and-Forget Rider, order your ThunderMax® from Zipper's pre-programmed for your application, install it and simply go riding. ThunderMax's AutoTune system continuously reads the result of every cylinder fire and fine-tunes the installed base map to your engine's requirements and your riding style – a service other products require a dyno and a skilled operator for. No matter where you ride – hot, cold, sea level or Pike's Peak, you can expect your bike to have smoother, quicker throttle response, increased power and cooler operating temperatures.

For the Rider who likes to change pipes, cams, engine size, add a turbo or supercharger or just about anything else you can imagine, ThunderMax® provides everything needed to facilitate these changes through the included software and features like its AutoMap function, and you don't have to be a rocket scientist to program it or make adjustments!

NOTE: Includes pigtail communication cable adapter due to limited module access.  ThunderMax requires 18mm exhaust sensor ports as used on 2006-2011 Dyna models.  2012-2013 (stock 12mm) Dyna models must use a 2007-2011 style exhaust or modify the 2012-2013 Dyna exhaust to accept 18mm oxygen sensors if not equipped with dual sensor ports.  2004-2005 Dyna models require exhaust with 18mm oxygen sensor ports or be modified for the same.

For technical EFI information along with detailed product support, please visit our EFI Tuning Models page.

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