Iris chain

Discussion in 'Trials' started by heffergm, Oct 12, 2017.

  1. heffergm

    heffergm Long timer

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    So if these are complete garbage, why oh why does just about every trials dealer carry them? I guess on the plus side they're about half the cost of your normal size 520 plate chain, so you can replace them twice as often.

    I'm running one at the moment by the way...
    I do carry a spare :)
    #1
  2. laser17

    laser17 Long timer

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    I always thought that they were OK until I put a quality chain on that didn't stretch like a piece of taffy. They are light and cheap. There are plenty of chain threads to look up on here if you want the concise history of the chain.
    #2
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  3. lineaway

    lineaway Long timer

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    Actually the chain replaced the whip. The whip was used to go faster. I.e. Animals or slaves. The chain came along with the engine.
    #3
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  4. DerViking

    DerViking Shred

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    I have had 4 chain failures at bad moments in my Moto career. 3 of them were these little iris bastards. At least they aren't hard on sprockets as the ruin themselves. Swapped to a Renthal before it broke on my 2014. Though it took a derailment to get around to it.
    #4
  5. Hoss Cartright

    Hoss Cartright Been here awhile

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    IRIS chains, they are light, lots of trials peeps are weight conscious... I stock them and sell them, I don't use them on my own bikes.
    Yes, they stretch like crazy.
    And yes, the IRIS can break, and it can cause damage to the engine when it breaks and wraps-up.
    People still want to buy them because they are light. No different than people buy titanium foot-pegs, titanium exhaust pipes, titanium nuts and bolts, and miscellaneous carbon fiber parts..

    BTW - The TRS machines come with a Regina normal type 520 chain.
    #5
  6. Buschog

    Buschog Been here awhile

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    The previous owner of my wife's Sherco gave me a new chain in a sealed bag. No idea of brand, but it's stamped Malaysia. Any idea? Don't particularly want to run a cheap chain and throw it through the engine case if/when it breaks.
    #6
  7. heffergm

    heffergm Long timer

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    I took a standard Bikemaster 520 roller chain off my bike before I put the Iris on... they were virtually identical in weight. At least I certainly couldn't tell holding them.

    The Iris is basically toast after a 2 day mud fest. Hello Renthal R1.
    #7
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  8. Thesolidman1

    Thesolidman1 Adventurer

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    Petty sure the Renthal R1 won't be the same weight as the Iris. I used to choose the Renthal as a replacement, now looking to go back to the smaller, more svelte, trials specific chain, but not Iris. Which mean Regina. From what I can determine that means buying as an OEM part, or ordering from Europe.
    #8
  9. PSchrauber

    PSchrauber Long timer

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    No IRIS no cheao chains it's too expensive if something happens.

    DID ERT 2 MX or Regina Gold RX3 non of them are light instead a bit heavier
    #9
  10. DerViking

    DerViking Shred

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    I noticed last night that the Gas Gas swingarm sticker prominently says Regina chain, with their logo, but came with an Iris. WTF?!?

    The Rental R1 is not even remotely the same weight, but hasn't required adjustment in years. Very nice chains.
    #10
  11. heffergm

    heffergm Long timer

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    The GP does come with a regina. The renthal is just a rebranded regina by the way.
    #11
  12. Brewtus

    Brewtus Buffoonery, Inc.

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    I don't know about the rest of you Pros, but my meager skills are not advanced enough to detect the weight difference between the IRIS and DID chains. All I know is that I don't want to worry about chain breakage when I pull the trigger on the 4RT. :p3rry
    #12
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  13. lineaway

    lineaway Long timer

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    You have enough to worry about, the pegs could come flying off at any momrnt.
    #13
  14. Brewtus

    Brewtus Buffoonery, Inc.

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    Easy now.... :dirtdog

    :lol3
    #14
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