Rear brake disc

[Jimbob]

Hey guys I'm in the process of replacing the rear brake pads and disc. The concern I have it that u brought the disc new of eBay and in the Haynes manual the minimum spec is 5.5mm but this brand new disc is 4.20mm. What do you guys think?

I have attached the eBay add so you can see its for this bike

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[Soloratov]

Is there a brand indicated? While I am sure 1mm won't make much of a difference if the disk is designed to work at that thickness, but I always like a little extra meat helping me stop.

[fetor56]

For a rear rotor(even for a front rotor) 4.2mm seems a little thin.......5mm+ min.

[Jimbob]

Yeah I'm trying to get a safety cert for the bike

[sledge]

Discs need mass to dissipate the heat generated during braking, perhaps this item can do at 4.2mm what the OEM needs 5.5mm to do 

[twocool]

You have been "taken" by cheap Chinese crap on E bay........

Return if you can...

Buy OEM or name brand.....

Buy good stuff....expensive..but then you only cry once.........

Buy crap and you cry again and again...

Cookie

[Jimbob]

Yeah I sent him an email ill see if he replies luckily I payed with PayPal so if he does not reply or give a satisfactory resolution ill raise a disbute with them

[Jimbob]

I've been looking on eBay and it seems most discs are between 4-5mm which is weird

[fetor56]

I've been looking on eBay and it seems most discs are between 4-5mm which is weird

Braking is potentially a life threating situation.....u need descent quality.
http://www.ebay.com.au/itm/MetalGear-Brake-Disc-Rear-SUZUKI-GS-500-F-2004-2011-/150984554370?pt=AU_Motorcycle_Parts_Accessories&hash=item2327617782&_uhb=1

[Soloratov]

I'd just pay a little more for a proper vented and balanced disk from Ayers or Bandit.

[gsJack]

Took me a long time to get on the ebay bandwagon but finally tried them for a like new front rotor ($50) and stock rear shock ($40)  last year.  Bought only late model, low mileage oem parts from top rated sellers and paid a bit more than the cheapest I found there.  Both parts were as good as new.  The front rotor still looks like brand new a year later.

Bought a new name brand EBC aftermarket rear rotor from an online parts place about 10 years ago for my 97 GS and and later put it on my 02 where it is now.  It functions as good as new but it rusts all over every winter and I have to wear the rust off again every spring, it wasn't made for splashing thru the winter salt water of NE Ohio.  Paid $100-150 for it I think, don't remember exactly.

Back in the mountain years about 10 years ago I turned the front rotor bright blue twice on long hard downhill runs on that 97 completely fading it out once.  It never warped and was still functional with about 140k miles on it when I replaced it with the like new ebay rotor last year, just badly worn by then.  I wouldn't put anything less than an oem rotor on my GSs now, new or a like new used one from ebay.