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XTreme EnergyT Evo Cam Kits
XTreme EnergyT Evo Cam Kits VThunder® Valve Spring Kits Free Ground Shipping to Continental US for orders over $100
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To improve the power and sound of your Harley-Davidson® motorcycle, VThunder® performance products should be your first choice. Regardless of whether you’re cruising cross-country, racing or on a local weekend ride with friends, VThunder® has the right engine upgrades including mild to exotic camshafts and state-of-the-art valve train components. Best of all, each of our performance products is engineered to retain that Harley® performance legacy . . . while giving you more of everything that made you choose a Harley® in the first place.

Key to the success of VThunder® products is its close tie to the parent company, COMP Cams®, which for 30 years has been a leader in aftermarket engine valve train technology. Through rigorous testing conducted at our on-site cutting edge R & D center and advanced manufacturing facility, you are guaranteed that VThunder® performance products not only deliver the best technology, but they continue to reset the limits in the development of the finest aftermarket Harley-Davidson® products possible.

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