Airflow Derby Cover

    Part Number 25700505


    Finish / Color: Mirror Chrome




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    Shaped to cheat the wind. The polished and mirror-chromed Airflow Collection features a raised bridge with 3 laminar grooves that float over the recessed panels.

    • Polished and mirror-chromed
    • Layered surfaces capture light
    • Shadows frame the subtle black-filled Harley-Davidson® signature
    • Sets the stage for your one-of-a-kind custom ride
    • Includes chrome-plated mounting hardware


    • Collection

    • Material Content

      Die-cast aluminium
    • Warranty

      1 year limited warranty – Go to for full details
    • Sold in Unit

    • In The Box

      Derby cover and chrome-plated stainless steel mounting hardware


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    Fits ’16-later Touring and Trike and ’15-later FLHTCUL and FLHTKL models. Also fits ’07-later Touring and Trike models equipped with Narrow-Profile Outer Primary Cover P/N 25700385 or 25700438.

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    More Info

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      Removing and installing engine covers may require purchase of new gaskets. See dealer for information.


      Airflow Derby Cover is rated 5.0 out of 5 by 4.
      Rated 5 out of 5 by from Thank you previous reviewers Obviously, this part is purely cosmetic so it is a matter of personal taste whether you like the look. I listened to the previous reviewers who said they were told that the flat gasket fit this part. I told the parts guy to give me the stock gasket and he said I was wrong. I trusted the reviewers and they were right -- it takes the stock gasket. It's a great look in my opinion. It's a quality made part. I wish I would have read the description more closely. I bought chrome derby cover screws separately but this part COMES WITH CHROME SCREWS! My mistake.
      Date published: 2017-07-21
      Rated 5 out of 5 by from Looks good Looks great on the bike, kinda matches the streamliner boards and grips.
      Date published: 2017-04-23
      Rated 5 out of 5 by from GREAT STREAMLINED DERBY COVER! I purchased this Airflow Derby Cover along with the matching Airflow Timer Cover. Together the look absolutely great on my Tri Glide. They are very heavily chromed, yet made from aircraft grade aluminum. As the other reviewer noted, these use the rubber 0-ring gasket that fits within the inner groove of the derby cover, so make sure you purchase the correct gasket to go with this cover. This is a great Harley designed derby cover and I'm glad I got this to go along with the matching timer cover.
      Date published: 2016-07-06
      Rated 5 out of 5 by from Airflow derby cover This is a very high quality part and it looks nice on the bike. The only issue I have is the description should include what type of gasket it requires. This one uses the stock rubber o-ring gasket. My dealer was not aware of that and sold me the flat derby cover gasket which does not fit. It is a small detail but a very important detail that should be included in the description.
      Date published: 2015-12-21
      • y_2018, m_2, d_26, h_20
      • bvseo_bulk, prod_bvrr, vn_bulk_2.0.7
      • cp_1, bvpage1
      • co_hasreviews, tv_0, tr_4
      • loc_en_US, sid_PA-04-25700505, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
      • clientName_harleydavidson

      Q & A

      Gasket part number

      Kindly provide the part number for the Airflow derby cover gasket 2016 flhtk This should be included on the web page fitment tab Does it use the stock OEM o-ring type? or.... the flat "aftermarket" cardboard style as with the earlier models?
      Asked by: Schrambo
      It uses the rubber O ring one not the flat disc style one.
      Answered by: Subic97
      Date published: 2017-06-24
      • y_2018, m_2, d_26, h_20CST
      • bvseo_bulk, prod_bvqa, vn_bulk_2.0.7
      • cp_1, bvpage1
      • co_hasquestionsanswers, tq_1
      • loc_en_US, sid_PA-04-25700505, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
      • clientName_harleydavidson

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