Hey folks,

I've been needing to replace my front rotor for a little while due to a slight warp that has been getting a bit worse over time. I've been looking around for aftermarket ones and found a company called Galfer. They were the ones that originally designed the wave rotor employed on the newgen bikes. I found one for the pregen, but wanted to see what info I could get on Galfer based on people's experience. I've looked up several reviews of Galfer parts and they seem to be very solid, but I still thought I'd check with you guys. What experience or thoughts do you have? TIA! :D

http://www.shopracersupply.com/Metric-StreetSportbike/Brakes/Kawasaki/Front-Disc-Brake-Wave-p5856405.html

If you want to save a lot of money, you can have the warped rotor turned at any brake shop. But if you want the bling wave rotor, Galfer is a very reputable company.

Thanks. I'm a little confused though. The "other forum" said that it wasn't a good idea to turn motorcycle rotors like car rotors because bike rotors are so much thinner, so turning them would probably make them too thin. Is that wrong?

http://faq.ninja250.org/wiki/The_brake_disc

I find that the "other forum" is pretty conservative as far as bike maintenance and practices. while it is safer to err on the conservative side of things you may also be able to get a second opinion from someone who has turned their bike rotors before or maybe even a guy who works at the shop. regardless, galfer is a great company, i doubt you could go wrong with anything they sell.

Ok sounds good. On another note, another thing the "other forum" says is that you should never go with anything other than sintered metal brake pads. Is that also conservative and Kevlar works ok, or is that one more commonly accepted?

So long as the thickness of the rotor is within spec AFTER you take it to a reputable shop, I don't see the problem. The manual says 4.5mm is the minimum thickness for the front rotor and the maximum runout is 0.3mm. Otherwise, Kawasaki says replace it.

It depends on how bad the warpage is, though. It might be easier/less expensive to replace it.

OEM pads are organic, sintered metal is for hard braking. FWIW.

$172??? How much would a Stock replacement be I wonder?

Galfer makes top of the line stuff. I wouldn't mess with trying to fix a bent disk.

The stock replacements are around $300 new. I don't want to buy a used one as it would be far to easy for it to be warped as well.

$277 here.
http://www.cheapcycleparts.com/model_years/1765-kawasaki-2007-ninja-250r-EX250-F7F/assemblies/25509

$303 here.
http://www.bikebandit.com/houseofmotorcycles/2007-kawasaki-motorcycle-ninja-250r-ex250f7f-us/o/m10043

Ninja 250 disks rarely warp. Their small size protects them from getting bend in accidents. I wouldn't worry about buying a used one. I may even have one to sell.

find out what they go for on ebay used, usually you can get the whole wheel , tire, and disc way cheaper than 175...or talk to craig