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Reddit mentions of Sunstar 2-459546 Silver 46-Teeth Standard Steel Rear Sprocket for Chain Size 525

Sentiment score: 1
Reddit mentions: 1

We found 1 Reddit mentions of Sunstar 2-459546 Silver 46-Teeth Standard Steel Rear Sprocket for Chain Size 525. Here are the top ones.

Sunstar 2-459546 Silver 46-Teeth Standard Steel Rear Sprocket for Chain Size 525
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Made from 1045 series high carbon steelexclusive heat treatment for added strength and wear resistanceZinc plated and baked on paint process for corrosion protectionSame great quality that the OEM have trusted for over 50 years
Specs:
ColorSilver
Height5 Inches
Length5 Inches
Number of items1
Release dateMarch 2013
Size46
Weight1.59 Pounds
Width5 Inches
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Found 1 comment on Sunstar 2-459546 Silver 46-Teeth Standard Steel Rear Sprocket for Chain Size 525:

u/ParticleSpinClass ยท 1 pointr/motorcycles

Hello!

I've got a 2012 FZ8, and I just replaced the chain and both sprockets. Here's what I used:

  • DID 525VXGB X-Ring Chain
  • Sunstar 42116 Countershaft Sprocket
  • Sunstar 2-459546 Rear Sprocket

    The problem: Pretty much any time I'm moving, I get a pretty loud whirring/buzzing/whining sound coming from the area of the front sprocket. I'm 98% it's the chain itself, at the moment it rotates around the front sprocket. Here's the facts:

  • Increases in pitch as speed increases (though 35-45mph seems to increase sharply)
  • Increases amplitude as load increases (e.g. it's much louder at 3/4 throttle than at 1/8th throttle)
  • I might have those mixed up (my memory sucks)
  • Only appears under positive load (cruise/acceleration)
  • Almost completely disappears under negative load (deceleration)
  • Still occurs with the clutch in and coasting, but not as loud
  • Stock sprocket has a rubber insert, new sprocket does not (I imagine this could have something to do with it)

    I've adjusted the chain to spec and aligned the sprockets the best I could. When I installed the chain, I cleaned off the grease that came with it with kerosene, let it dry, and went for a test ride. I've since (after the test ride to warm up the chain) applied chain lube and haven't ridden it since. This is the first time I've changed a chain on a bike before. Is this sound normal? Does it go away? It's not terribly annoying, since my leg blocks 90% of the noise (I only hear it when I move my head to the side, or open up my legs), but I just want to make sure I didn't do anything wrong. I torqued all nuts to spec on both sprockets and the axle. I've put the front sprocket cover back on (I had it off during the test ride), so I imagine that it will muffle the sound a bit. I also normally ride with earplugs so that will help too.

    Here's a video that shows the sound. I only get up to aboue 25-30mph, but you can still hear it. Notice that once I cut the throttle, the sound disappears. And keep in mind that it's a lot louder than the video makes it seem.

    Thanks!