Mongoose Seat - Diamond



This two-up seat for '04-'06 and '10-'19 stock Harley Sportsters has a deep backrest for more rider support. Its narrow passenger area follows the stock fender line beautifully.

Technical Details

  • Lightweight, extremely rugged 3mm thick vacuum-formed ABS plastic pan
  • Soft, compliant molded polyurethane foam padding
  • Hand-stitched, heavy-duty vinyl cover construction
  • Rubber-dipped, chrome-plated steel nose bracket
  • Chrome-plated steel rear mounting tab
  • Mounts to stock location on 2004-'06 and 2010-'19 H-D XL models (moving the threaded insert on your stock fender may be required)
  • Also available raw (uncovered) for custom leatherwork or upholstery

    Care and Maintenance

    Biltwell bolt-ons like our Mongoose seat give your stock Harley-Davidson a clean upgrade without breaking the bank. Our seats feature materials and construction technology like those on a modern motocross machine: comfortable molded PU foam, molded ABS plastic pans and hand-stitched, highly weather-resistant vinyl covers. While the heavy-duty vinyl covers on our seats are weather-resistant, the tiny holes created by their custom stitch patterns are not. If you park or ride your motorcycle in bad weather, cover your seat with a Biltwell Seat Skin (sold separately) to protect its upholstery and foam in wet conditions.


    Mongoose Seat - Diamond

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      Spend over $100 in our online store and your order ships for free within the USA. Orders placed before 2:00PM PST generally go out the same day so you get your stuff fast.


    Rating Snapshot

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    Customer Reviews
    4.6 Based on 5 Reviews
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    Filter Reviews:
    • sportster
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    • factory holes
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    • 1200
    • craftsmanship
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    Jason M.
    United States United States
    Bad A$$ seat

    This seat is exactly the look I was going for. The craftsmanship and manufacturing are perfect and it bolted up just like it should. More comfortable than stock, not great on long journeys, but that's not really why I bought it. If you want a comfortable seat buy one of those wide, tall, ugly ones with the buttons, like your Grandpa uses on his Electra glide.

    Nicholas P.
    United States United States
    Perfect fitment

    2012 sportster 1200. Easy to install and fitment aligned with factory holes. The seat itself is very comfortable for both riders. Would recommend if your looking to purchase.

    Anthony C.
    Customer review

    I've been running this seat for about 6 months. It's held up great so far! My only complaint is it could be manufactured about two inches wider for some more comfort. I'm holding tight for Biltwell to step into the 12"+ width. It would really make those longer day trips more supportive and comfy.

    Customer review

    Awesome seat! Looks dope and feels super rad!! Great product by great guys.

    Cody S.
    Customer review

    Looks great, feels great! Long rides are effortless with this bad boy!

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