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Thread: Gear Lube - Anyone not just Bolt owners

  1. #11
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    Anybody try Bel-Ray Sport Transmission Fluid? I'm thinking of trying it out since XB primaries/transmissions are basically the same in operation.



    Sport Transmission Fluid has been developed for the unique demands of Sportster V-Twin motorcycle transmissions equipped with wet clutches. Bel-Ray® Sports Transmission Fluid flows freely for better clutch cooling and provides positive clutch engagement for better starts and longer clutch life while protecting highly-loaded gears from wear, ensuring smooth shifts for more positive action.

  2. #12
    Senior Member konarider94's Avatar
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    Bet its good stuff. Product data sheet says its 85W gear oil. Prob not much different that the other belray gear saver oil, or maxima mtl.

    klotz makes something too. Their R50 2 stroke oil smells so good.
    https://www.klotzlube.com/techsheet.asp?ID=43

  3. #13
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    melvster/kona: what belray is calling their "sport" trans fluid is a heavier version of bel-ray gearsaver #80. bel-ray products are excellent.local bel-ray distributor here says this new trans fluid has some specifics in the additive package to handle high temps a tad better than gear-saver fluid. they mentioned cooling. keep in mind that wet clutches need the oil for cooling the clutch pack......NOT for any sort of specific lubrication requirements. though i'm partial to amsoil 20-50 cycle oil in the primary this bel-ray product looks excellent if it's price-competitive.

  4. #14
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    Anybody try Bel-Ray Sport Transmission Fluid?
    Interesting. The website shows that it's API JASO certified which is all you really need to know about its compatibility with wet clutches, but, it's also GL-5 certified, meaning it's got the EP sulfur additive which is corrosive to the yellow metals found in our XB primaries (unless of course it's also fortified with corrosion inhibitors, but the website does not mention this).

    I'd have some concerns about using the Bel-Ray for this reason.

  5. #15
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    Doesn't the Evo Sporty primaries have a similar charging system and transmission...also would have yellow metals? This is specifically for the sportsters...

  6. #16
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    Doesn't the Evo Sporty primaries have a similar charging system and transmission...also would have yellow metals? This is specifically for the sportsters...
    I believe so, yes. But unless HD specifically recommends the use of Bel Ray in their Sporties, who knows if the corrosive issue has been addressed by Bel Ray (one would assume so, but it's not clear from the labeling).

    Unfortunately HD Formula+, the only recommended lube in our primaries, does not carry any API certification so it's really challenging to know what's in it, and what cross-references with it.



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