Best in 7 days
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Shipping Estimate
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- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 17 - Jun 22
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
SoundQubed 18" HDX4 Series SubwoofersHDX subwoofers build upon the design of the HDC line in response to recent shifts in source material and the mainstream frequency tuning of our customers vehicles. Our team scrutinized all aspects of the HDC subs to improve performance at lower frequencies. The resulting HDX dual voice coil competition subwoofer line is more efficient, plays lower, and sounds better setting a new bar for performance and value. INCREASED EXCURSION The new cast basket
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.4 ★★★★★
Based on 2113 reviews
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Product Reviews
★★★★★ 5
Great product!
Style: Two Pieces
These were a perfect fit for my MB and very easy to install. Great value for the money. They should last given the way they were built.
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Reviewed in the United States on November 14, 2025
★★★★★ 5
Work good
Style: One Piece
Fit and work perfectly.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
WHAT A MARVELOUS AIR FILTER.
Style: Two Pieces
SO FAR THESE FILTERS ARE MARVELOUS. THESE FILTERS ARE WELL MADE ESPECIALLY FOR THE PRICE. LOOKS LIKE A SIGNIFICANT $$$$ SAVINGS. TMP.
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Reviewed in the United States on March 9, 2026
★★★★★ 4
OEM quality
Style: One Piece
Good quality replacement. Perfect fit
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Reviewed in the United States on April 9, 2025
★★★★★ 5
Exact fit, no trimming needed
Style: One Piece
Ordered this for my Ford F-150 and it dropped right into the airbox perfectly — same dimensions as the OEM filter, same end seals, same fit. No gaps, no air bypass around the edges. Clean swap in under five minutes. Engine runs smooth and the price is unbeatable.
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Reviewed in the United States on May 11, 2026
