Imzz ARP Harley Seat Bolt Kit

(69 customer reviews)


  • Fits all Harley models
  • FXR models require 1/4″-28
  • All other models require 1/4″-20
  • Acts as a theft deterrent by requiring a 12-point socket for removal
  • Made in the USA
  • Manufactured to Imzz Elite exact specifications




THE ORIGINAL Imzz ARP Harley Seat Bolt Kit

A clean looking alternative to that boring factory Harley seat bolt. The ARP Harley Seat Bolt Kit is available in 2 bolt finishes, polished stainless and black, and your choice of 1 of 7 different Billet Aluminum beauty washers. Washers are recessed so bolt head fits perfectly for a nice, sleek look.


  • Fits all Harley models
  • Acts as a theft deterrent by requiring a 12-point socket for removal
  • Made in the USA
  • Manufactured to Imzz Elite exact specifications

Our proprietary 6061 Billet Aluminum washers are available in 7 different colors:

  • Black
  • Machined (silver)
  • Red
  • Blue
  • Green
  • Gold
  • Purple

How do I know what size to choose?

  • FXR models require 1/4″-28
  • All other models require 1/4″-20

Check out our YouTube channel for awesome How-To videos, tech advice and more!

Find more ARP bolts Hardware kits for your Harley HERE.

arp hardware for harleys

What is a Black Oxide finish?

Black oxide or blackening is a conversion coating for ferrous materials, stainless steel, copper and copper based alloys, zinc, powdered metals, and silver solder. It is used to add corrosion resistance, for appearance and to minimize light reflection. One of its advantages over other coatings is its minimal buildup; the blacking process creates a layer only about a micrometre thick.

Why are my new ARP bolts oily?

That oil keeps them from corroding and keeps them looking new! You’re a biker…you can’t be afraid to get your hands dirty. (If you are, trade your Harley in for  Vespa.) Hot baths of sodium hydroxide, nitrates, and nitrites (at 286 °F) are used to convert the surface of the material into magnetite (Fe3O4).  To achieve maximal corrosion resistance the black oxide must be impregnated with oil or wax. Once the process of dipping is completed the top layer of the fastener is porous and a layer of oil is applied, similar to a pickling process. The oil seeps into the material adding that extra corrosion resistance to rust.

Will they rust?

Black Oxide adds a layer of corrosion and abrasion resistance to fasteners. Like any material, black oxide treated fasteners can rust in the right environments. It will depend on if the fastener is damaged or marred, the type of metal with the black oxide treatment and environmental conditions. In high heat environments, the oil residue that stays on the fasteners will begin to turn brown. Many users find their bolts look like they rust prematurely when really, the oil is just changing colors. See the next Q&A to learn how to bring them back to looking new if they begin to show rust.

Do they require maintenance?

Like any treated, chromed or painted surface, they do require some maintenance. It’s simple and takes only a few minutes! To keep your black oxide hardware looking good and new on your bike, they must be oiled. We recommend spraying WD-40 on a rag and wiping the surface of the hardware whenever you clean your bike. Don’t wait for them to look bad before doing something. A quick swipe with WD-40 every now and then will keep them looking brand new and prevent corrosion. We use Silikroil around the shop which we prefer over WD-40. You can find it on Amazon. In hot, rainy or humid environments, they may require more frequent maintenance.

History & Background on ARP

They say that to be successful you must identify a need and satisfy it. Back the early 1970s, racing enthusiast Gary Holzapfel saw that many of his friends’ broken engines were caused by fastener failure.

At the time, there were no commercially available studs and bolts up to the challenge. So Holzapfel called upon his many years of fastener making experience for a leading aerospace subcontractor and founded ARP (Automotive Racing Products).

In the ensuing years, the firm has grown from what was literally a backyard garage workshop into a highly diversified manufacturer with seven operational entities in Southern California with a combined area in excess of 200,000 square feet. These include forging, heat-treating, machining, quality control finishing and packaging/warehousing facilities in Santa Paula and Ventura, California.

There is even a unique racing-themed restaurant at the main Santa Paula facility – called “ Hozy’s Grill” – which is open to the public.

Today, ARP’s product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.

Additional information

Weight .0625 lbs
Dimensions 1 × 1 × 1 in
Choose Bolt Finish

Polished Stainless, Black

Choose Washer Finish

Black, Red, Blue, Gold, Green, Purple, Machined


1/4"-20, 1/4"-28 FXR

69 reviews for Imzz ARP Harley Seat Bolt Kit

  1. Anonymous (verified owner)

    Great product

  2. Kyle Putnam (verified owner)


  3. Timothy Walker (verified owner)

    Quality part

  4. cheney k. (verified owner)

    Way better than stock

  5. Kevin (verified owner)

    Fucking love it

  6. Michael Dungca (verified owner)

    You guys are awesome

  7. Luis M. (verified owner)

    This is the best way to keep safe your seat!!!

  8. Jeremy Mason (verified owner)

    Imzz is the best

  9. Steven B. (verified owner)

    Sweet hardware

  10. Anonymous (verified owner)

    I love this bolt kit. 2nd one I bought

  11. David G. (verified owner)

    Great product, washer fits well around the head of the bolt.

  12. James C. (verified owner)

    Great product, look forward to buying more ARP hardware kits in the future.

  13. Hollace B. (verified owner)

    Finish and quality is perfect

  14. Robert P. (verified owner)

    Clean and simple, all in the details.

  15. Noah Rosa (verified owner)

    Excellent hardware

  16. Marcos (verified owner)

    Just as intended!

  17. Bryant Ponn (verified owner)

    Upgrading hardware to arp is the simple detail that really go a long way to give you that custom look and ot to mention it makes things easier to work on.

  18. Mike O. (verified owner)

    Good part for a good price

  19. Vinny H. (verified owner)

    Badass look and even better quality ??

  20. Hugo (verified owner)

    I wish you guys sent some stickers to represent with the orders

    • Imzz Elite Team Member (store manager)

      On their way to you now!

  21. Eric D. (verified owner)

    Hardware came packed nicely and the product itself was damage free amd intact. What’s really great about it is the speed in which it got to me. I ordered Wednesday afternoon and it was in my hand by Friday and showing it off by Saturday. This is my 2nd purchase with IMZZ and I have to say i’m a loyal customer.

  22. Bret E. (verified owner)

    Quality products, decent price

  23. Gavino L. (verified owner)

    Very cool item.

  24. Alfred Fehling (verified owner)

    Awesome look, great feel of safety for my seat

  25. Chris Moore (verified owner)

    Clean n simple

  26. Carmelo pullaro (verified owner)

    Fits nice and snug and keeps the seat safe from those nasty ass seat stealers!!

  27. Jimmy (verified owner)

    I bought this bolt after I lost my whiplash co antitheft seat bolt. I like the look of this one better for it being all black and easy to keep a socket in my bar bag than a special bit

  28. Gary (verified owner)

    Washer is beautifully machined, ARP bolt is… Well it’s a ARP bolt so, they hold my motors together so they should hold a motorcycle seat no problem.

  29. Anonymous (verified owner)

    Wanted black but didn’t like the easy removal of a knurled knob Looks good and keeps my LePera seat on my bike.

  30. Michael (verified owner)

    Nice product.

  31. Gustavo (verified owner)

    Fitment perfect and look great

  32. Kevin Shaul (verified owner)

    Works great

  33. Robert (verified owner)

    Great service and quick shipping.. Couldn’t be happier with it.

  34. jaypama212 (verified owner)

    I had a Whiplash seat bolt that kept getting loose every time I rode. When the new ARP seat bolt came in, I noticed it’s a lot longer compared to the Whiplash one and Whiplash’s bolt was barely holding on by a couple of threads. I went a full day of riding the next day with the ARP bolt and it never got loose one bit. Highly recommend this product and not to mention super fast shipping, but that’s probably because I’m local. Ordered on a Thursday night and got it Saturday afternoon!

  35. Patrick G. (verified owner)


  36. Jared M. (verified owner)

    Nice clean touch

  37. Dustin M. (verified owner)

    Great quality and color was spot on to the pictures from their site. Super happy with my purchase.

  38. John Hambly (verified owner)

    Great service fast shipping

  39. Matthew S. (verified owner)


    Image #1 from Matthew S.
  40. Ilan Harel (verified owner)


  41. Thomas (verified owner)

    Looks Great!! A bit longer than the stock screw

  42. Kevin (verified owner)

    Great add-on! Not a fan of the HD thumb screws for security reasons. This gives a piece of mind and looks great on the bike.

  43. Steven Podolec (verified owner)


  44. Frank D. (verified owner)

    Almost perfect! With the right wrench (as a keyring pendant?) there would be 110%

  45. Adam F. (verified owner)

    Added security to prevent seat theft

  46. Michael Radigan (verified owner)

    Looks great and arp strength is unmatched

  47. Rey C. (verified owner)


  48. Max O. (verified owner)

    Great quality. Fast shipping. Will be ordering more

  49. Kyle (verified owner)

    Exactly as described, and excellent fast shipping!

    Image #1 from Kyle
  50. Tim Jennings (verified owner)


  51. Richard Conley (verified owner)

    Looks great

    Image #1 from Richard Conley
  52. Ryan (verified owner)

    Looks great, shipped fast, this nice hardware is addictive.

  53. Bradley (verified owner)

    My black bolt looked great for 2 years but has become rusty over the past 12 months. Shame since the black looked so cool. Otherwise a neat device.

    • Imzz Elite Team Member (store manager)

      Hey Bradley, The black ARP bolts do require some maintenance. A little WD40 and they should be just like new again! Here is a link to some more info about maintaining them:

  54. Mark Benesi (verified owner)


  55. Justin OFlaherty (verified owner)

    Quality product. These guys shipped out my order the very same day, and it was in my mailbox 3 days later. Not even Jeff Bezos is doing that these days. Very impressed with the way you guys handle business, super professional. 👍

    Image #1 from Justin OFlaherty
  56. Spencer

    Very clean and solid seat bolt. All black looks great. High quality.

  57. Spencer

    Great quality seat bolt. Looks great.

  58. Anonymous (verified owner)

    Not an IMZZ part so it was good quality, but took weeks to get here.

  59. Tommy Webb (verified owner)

    Great looking option to the standard seat mounting bolt

    Image #1 from Tommy Webb
  60. Anonymous (verified owner)

    Perfect fit nice gold.

  61. Jordan A. (verified owner)

    It’s simple but completes the look

  62. Nick Zinola (verified owner)


  63. Marc (verified owner)


  64. Anonymous (verified owner)

    Timely delivery. However, I don’t think the correct bolt was provided though since the head diameter is much smaller than the washer. Meaning it won’t rest centered. 😞

  65. Tim W. (verified owner)

    Super super fast shipping, bolt and washer look good and worked perfect. Looks to be high quality, buy it!!

  66. Douglas D. (verified owner)

    The Black ARP seat bolt is a nice touch to the rear fender of the bike.

  67. Lee Marrero (verified owner)

    Bought the black seat bolt and red washer, they look great with my seat.

  68. Carlos S. (verified owner)

    Great quality

  69. Richard M. (verified owner)

    Looks great

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