Horsepower Direct

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  • Call Us

      Sales and Support Questions: Please Call 1-608-473-3171 Shipping and Tracking Numbers: Please Email Support with Order Number. For Faster response time, please email us, and include First Name, ...

  • Free Shipping On Orders over $50.00 Lower 48 States

    FREE SHIPPING ON ORDERS OVER $50.00!   Horsepower Direct® is very proud to offer Free Standard Shipping on any order over $50.00 for the lower 48 States and Same Day Shipping (on most parts) if you...

  • 304 Stainless Steel vs 409 Stainless Steel

    What's Better, T409 or T304 Stainless Steel Exhaust Components? The most frequently used stainless steel in performance exhaust system is T409. Found in Flowmaster exhaust and many stainless muffle...

  • How do you have such low prices on some brands

    How does Horsepower Direct have such low prices on certain brands? They are lower than Online Retailers we have heard of before.  Great Question !!!  It is very simple.  We purchase directly from t...

  • ARP 8740 vs ARP 2000 vs ARP 625+

    8740 Chrome Moly: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a ...

  • ARP Material Grades/Specifications

    ARP manufactures fasteners from a wide assortment of materials ranging from popular stainless steel and 8740 chrome moly to exotic alloys that have been developed to handle space travel. You should...

  • 2618 vs. 4032 Piston Material Differences

     2618 vs. 4032 Piston Material Differences Before a single machining operation is performed, the perfect aluminum alloy must be selected. 2618 and 4032, the two most prolific piston materials,...

  • Returns Policy

    Returns will only be accepted within 30 days of the customer receiving the product, and ONLY if a Return Merchandise Authorization (RMA) number has been issued. Horsepower Direct® reserves the righ...

  • Flowmaster’s Header Warranty

    ONE (1) YEAR LIMITED WARRANTY FOR FLOWMASTER® HEADERS Flowmaster, Inc. (“Flowmaster”) extends the following limited warranty to the original purchaser of its Headers: Flowmaster® warrants the h...

  • Flowmaster® Product Warranty Details

      Lifetime Limited Warranty applies to Flowmaster stainless steel mufflers (excluding FlowFX series), all stainless steel exhaust systems(including FlowFX series), stainless steel pipes, air int...