CR500 Exhaust Manifold O-Rings

Replaces OEM part # 18291-ML3-791


4 CR500 high-temp FKM Exhaust Manifold O-Rings for your MSV Racing CR500 Exhaust Manifold

We have switched over to FKM O-rings which offer better high-temp durability, petroleum product resistance and higher durometer to make these an all around tougher O-rings for your MSV Racing CR500 Exhaust manifolds.

Additional information

Weight .100 lbs
Dimensions 4 × 4 × 1.5 in



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73 reviews for CR500 Exhaust Manifold O-Rings

  1. Thomas F. (verified owner)

    Fast shipping

  2. kane martin (verified owner)

    The cr500 exhaust manifold is a nice edition to my cr500 seals really good no leaks. The only problem i had is if you flood the bike and leave it for a while the oring rubber completely destroyed from touching raw fuel and the manifold started to leak. Then i replaced with the spare orings now everything is fine. But yeah the orings don’t like raw fuel maybe something to think about other than that love the product and look forward to more innovative products for these old big bores. Cheers Kane Martin from Australia.

  3. Paul Edmonds (verified owner)

    Keeping that exhaust sealed nicely

  4. Urs Eberle (verified owner)

    works great

  5. paul h. (verified owner)

    Nice to have spares available

  6. Benjamin Robbins (verified owner)

    Quick service and great quality!

    Image #1 from Benjamin Robbins
    Image #2 from Benjamin Robbins
  7. Jason Griffin (verified owner)

    top quality

  8. john wagner (verified owner)


  9. Nick Frady (verified owner)

    Great product

  10. Christopher W Heikkila (verified owner)

    This is my 1996 CR250/500 conversion with MSV exhaust manifold. Love it.

    Image #1 from Christopher W Heikkila
    Image #2 from Christopher W Heikkila
    Image #3 from Christopher W Heikkila
  11. geoffrey k dietz (verified owner)

    Does fit other brand manifold that uses two O-Rings.

  12. Hanicque Emmanuel (verified owner)

    Good quality

  13. Nolan (verified owner)

    long live the 500 two stroke

  14. Franklin Knisley (verified owner)

    Still in box

    Image #1 from Franklin Knisley
    Image #2 from Franklin Knisley
  15. Walter Wiggins (verified owner)

    Great part!! Seals the deal.

  16. William Stevens (verified owner)

    Look like good quality rings

  17. Roger Tiscareno (verified owner)

    Seals up on a cr 500 real nice. Pipe is a little tight on af and needed extra o rings but no leaks!

  18. Derrick Lee (verified owner)

    same quality as originals

  19. Robert R. (verified owner)

    Good price

  20. Raul C. (verified owner)

    Excellent product. Worked as described. Ensures proper seal between the flange and expansion chamber.

  21. Carl Jepson (verified owner)

    The parts arrived quickly and everything fit perfect. The CR 500 rips even harder.

    Image #1 from Carl Jepson
  22. David Stephenson (verified owner)

    Wonderful Product – !

  23. Scott Simpson (verified owner)

    We’ll see how they hold up

  24. Adam Underwood (verified owner)


  25. Josh (verified owner)

    Enjoy working with Jason, more than fair, offers top of the line products, and even better service.

  26. Greg Lechmann (verified owner)

    Very good

  27. joe vitetta (verified owner)


  28. Ben (verified owner)

    Perfect Replacement

  29. David Burrier (verified owner)

    High quality

  30. Anonymous (verified owner)


  31. William W. (verified owner)

    They work excellent and seal awesome. No more spooge around the exhaust or cylinder.

  32. STEPHEN Toms (verified owner)

    Best in the business

  33. Jon Rubin (verified owner)

    Good stuff

  34. Albert Cassidy (verified owner)


  35. Nick T. (verified owner)

    have purchased these o rings as spares, the original ones are still in good condition 👍

  36. Kirk (verified owner)


  37. Kyle Chapman (verified owner)

    Great deal

  38. Kirk D. (verified owner)

    Good Stuff

  39. Ken Brown (verified owner)

    No problems

  40. Anonymous (verified owner)

    Was recommended to get extra o rings

  41. Lars H. (verified owner)

    Nice fit.

  42. Joshua Paull (verified owner)


  43. Eddie Meyer (verified owner)

    Great product

  44. Christian M. (verified owner)

    Great to have the option to buy directly as spare

  45. PAUL FINNERTY (verified owner)

    As MSV described

  46. Thomas D. (verified owner)

    Hey thx Perfect Job!

  47. Edward Meyer (verified owner)

    Great product!

  48. billy fontenot (verified owner)

    Great product

  49. Dillon Sedevcic (verified owner)

    Spares for exhaust changes

  50. Jason E Smith (verified owner)

    Great product!

  51. Steve Garcia (verified owner)


  52. Mick Watts (verified owner)


  53. George (verified owner)

    High temp o rings, they do the job!

  54. Pat Welsh (verified owner)


  55. Robert Norman (verified owner)


  56. Nathan Koogle (verified owner)

    Ordered this set because I wasn’t sure if they were included with the manifold. They do. I’m glad to have an extra set.

  57. Anica (verified owner)

    Great product

  58. MR C P HAZELL (verified owner)


  59. Dennis Millus (verified owner)

    Perfect size

  60. Robert Norman (verified owner)

    On our outlaw kart they need replaced after every night of racing

  61. James Boswell (verified owner)

    Bought these for backups just incase I need them later!

  62. Robert (verified owner)


  63. Donald Albring (verified owner)

    They are o-rings

  64. MICHAEL Allen (verified owner)

    Bought the o rings to have spare set! But they are included with the manifold!!

  65. Shane Barrett (verified owner)

    necessary o-rings

  66. Keith B. (verified owner)

    Great fit works great

  67. alan c. (verified owner)

    Item as described

  68. curtis wood (verified owner)

    Needed because a new one broke while installing the MSV manifold for the first time. Maybe add an extra o-ring to the manifold kit just in case…

  69. Joshua (verified owner)

    Same as above.

  70. Kurt Pieper (verified owner)

    Have to have spares. Lol

  71. Derrick Lee (verified owner)

    Exact replacement

  72. Scott G. (verified owner)

    Look to be great quality

  73. Justin Whichard (verified owner)

    These fit perfectly on the MSV flange. Definitely good to keep a spare set of these on the shelf!

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(73 customer reviews)