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O.E.M. Fitment:



  • Keeping your bike on the straight and narrow.


    How to make sure your bike’s rear wheel is properly aligned for top performance and durability.

    Most of us don’t give it a second thought. But a misaligned rear wheel can create serious handling issue, lead to rapid, uneven tire wear, and wreak havoc on drivetrain sprockets and chain. Fortunately, it’s pretty, um, straightforward to make sure everything is in line.

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  • Good bike behavior calls for a chain that’s well adjusted.


    Your bike’s final drive was designed by some really smart engineers to deliver serious performance while also staying composed, predictable and reliable through the constantly changing demands of everyday riding.  And it was designed to do that for thousands and thousands of trouble-free miles provided that we, as riders, do our part. Performing simple routine chain tension checks and adjustments goes miles—quite literally—in assuring our bikes will perform at their best mile after mile and year after year.

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  • The superheroes of power delivery.


    How your bike’s sprockets and chain work together to deliver super power.

    To achieve maximum performance, most riders tend to turn immediately to the power plant and begin to mastermind what wicked engine mods they will make. Sure, those mods can add serious horsepower, but will those changes really make the desired difference at the rear wheel? Can an investment of hundreds—or even thousands—of dollars in engine upgrades pay out? Will the good rider come out ahead? Will the power of goodness triumph in the end?

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  • Turning bad vibration into good vibes.


    How changing your bike’s gearing with a sprocket change could be a smooth move.

    You love your bike. But the continuous vibration at certain speeds can be a real buzz kill. Fortunately, a relatively simple change of final drive gear ratios on your chain-driven motorcycle can move that bad vibration away from the speeds you travel most and restore the good vibes you otherwise get when riding your machine. It’s relatively easy for the average rider to do or have done by a qualified mechanic at a reasonable cost. First, let’s get a better understanding of what this whole “final drive gear ratio” thing is all about.

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  • Something Old, Something New

    Looks can stop traffic. Modern brakes can stop old bikes.

    How to achieve more modern brake performance for your vintage motorcycle.

    There’s not much that’s more exciting than the head-turning power of an old motorcycle brought back to life as a resto-mod café, a retro racer, or a full restoration. What’s also exciting—but not in such a good way—is vintage braking system performance. A freight train could stop faster than most vintage bikes.

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  • Don’t skip out on your check.

    It’s easy to hop on the bike, hit the starter button and roll down the road or trail. But will your bike’s critical chain and sprockets be up to the task? Depending on riding conditions and riding habits, drivetrain components can wear at different rates. And the last thing you want to experience is unexpected failure miles from home. A simple 30-second pre-ride check before every ride is cheap insurance and will keep you informed about your bike’s drivetrain condition.

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  • How Sunstar® engineers are working to clean up their act


    Sunstar® engineers have been known to fling a little dirt and mud. Now don’t get us wrong; they’re good guys, but they really know how to dish the dirt. Especially how to dish it out and away from your bike’s critical drive components. They do it all in the interest of keeping your bike’s chain and sprockets cleaner and working better longer, no matter how filthy the ride gets. We thought you’d like to know how they managed to do that.

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  • When it comes to braking, your bike is biased


    Have you ever wondered why motorcycle and ATV manufacturers put large disks up front and smaller brakes in the rear? It’s a matter of designed-in brake bias. And that’s a weighty subject.

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  • Uncovering the secrets of advanced brake disc design.


    More than just metal hoops mounted to the wheel, those brake discs on your bike are packing a lot of secret performance. Here’s a quick lesson in advanced brake disc design.

    If you can’t stand the heat …

    Brakes rely on friction to do their job. But, in addition to creating impressive stopping power, that friction also generates boat loads of extreme heat that can quickly damage brake components and lead to brake fade and even brake failure. So how do racers push their bikes to the limit and still have strong braking power throughout a race? They select components that are designed to dissipate that heat efficiently, manage the expansion and contraction of steel braking components, and maximize the performance of brake pads.

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  • Identifying the characteristics of a bad sprocket


    Sprockets don’t start out as bad characters; they become that way. Over time, based on the environments they’re subjected to and the circles they run in sprockets can turn and wreak havoc on your bike’s performance and reliability. Taking a moment on a regular basis to visually check your machine’s chain wheels can tell you a lot about how they are likely to act today and in the future.

    Are your sprockets upstanding performers, or are they a bit shady? To answer that, let’s do a little profiling.

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