So I searched the forums trying to find out what’s the deal with my front sprocket cover cracking twice now. Just did a fresh rebuild following the pdf step by step and even had the power copy. Twice now my sprocket cover has broken such to the point I’m going to order a billet one. 03 busa. Anybody have any information of what exactly is causing this sprocket cover to crack so easily? The brand new one literally crack the back half by the speedo pick up within 2 miles. And the first one cracked up by the pushrod. Any help would be appreciated!
Sprocket cover cracked
- Thread starter BEERMONEY
- Start date
michael parris heuberger
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Hi. Is the bike stock? Does it have a clutch mod with header springs? That will make it crack.
TallTom
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It happened to my 03 once. No particular idea why. It was just cracked. I just thought it was a failed casting or something. Now you've had 2. So now I'm curious.
Mine is stone stock. Never been cracked open.
I know there was a billet one being produced on the aftermarket. Don't know if that's still out there.
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It was a known weak point/fail point, especially with heavier clutch springs.
Berlin Germany
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and @BEERMONEY
jepp stronger clutch springs at the gen1´ - the only reason i know that can cause the cover cracking .
to avoid that this is THE solution .
So here’s the pictures, as stated first one cracked by the front, here’s the second brand new part now @Berlin Germany @sixpack577 @michael parris heuberger
Yep, that's what they do
You think that front brace Berlin posted would actually prevent that from happening again? @sixpack577
Yes, the cast cover can't handle the stress from the clutch cylinder's movement, and it breaks, so the cover needs reinforced.
TallTom
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Is there a U.S. source for this solution?
I don't know, as it's been a long time since I've heard of anyone having this problem.
Maybe Schintz Racing?
Hayabusa Slave Support Gen 1
Hayabusa Clutch Slave Support Gen 1 HayabusaFits years 99-076061 t6 materialComes complete with all hardwareReady to bolt onSimple installationSaves the sprocket cover from breaking when heavy duty clutch springs are installed.
saeoutlawperformance.com
easy peasy, $20.00
TallTom
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TY SirHayabusa Slave Support Gen 1
Hayabusa Clutch Slave Support Gen 1 HayabusaFits years 99-076061 t6 materialComes complete with all hardwareReady to bolt onSimple installationSaves the sprocket cover from breaking when heavy duty clutch springs are installed.
easy peasy, $20.00
Busa Quick
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This is what I have. It will more likely survive if the chain breaks, and it won't crack like stock. Billet Sprocket Cover Hayabusa Gen2 (08-20)
TallTom
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Yes those are what I recall as the ticket back in my recollection.
202mphbusa
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Had this setup for years even HIGH RPM with lots of stage 1 lockup weight, pulling clutch at Loring at 10k+ rpmHayabusa Slave Support Gen 1
Hayabusa Clutch Slave Support Gen 1 HayabusaFits years 99-076061 t6 materialComes complete with all hardwareReady to bolt onSimple installationSaves the sprocket cover from breaking when heavy duty clutch springs are installed.
easy peasy, $20.00
didn't break cover
someone who's been boned from this site sent me a PMR cover for free that doesn't need a support
Will that fit a gen 1?
Busa Quick
Registered
For the fit, give them a call. They are near the East Coast, and they answer the phone. 
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