I have mine for 8 months, done around 10k kms.
- Warped front disks -> replaced under warranty
- Warped front disks -> replaced under warranty
I got the time for the disc replacement for next friday, week from now. Also asked if i could get the wawey discs if i pay the price difference between the stock and wavey discs. Didnt get the answer yet, my dealer and its customer service is a joke. Promised to call me back, havent heard from them...Mine went in for 12 month service and I asked about the front brakes. They measured the turn out and found 0.25mm variation. The max allowable is 0.10mm. They didn’t mention anything about how I brake too hard/soft/just right etc. The dealer is asking KTM for a new disc under warranty. Only problem is getting a hold of spares. So for the time being I’m putting up with pulling up at traffic lights under Marquez-style fork dives. Hopefully the new disc arrives before I get bucked off and gored by my own bike.....
Tom in Sydney
It is unfortunately the same for the one I have in my area....my dealer and its customer service is a joke. ....
Need to take the 790 to a track day Geoff, get some good heat through those disc's. more than likely the disc's are causing a little pulsing, light sand with 400grit then brake cleaner, then some serious braking to get an even heat through the disc rather than hot spots.I've got about 8000 km on mine and have just noticed a very slight snatching at low speeds - eg coming to a stop at traffic lights. It's so slight that I thought it was my imagination but maybe not. I mainly use a combination of throttle and gearbox on the open road but can't say I've really noticed at higher speeds when occasionally using brakes. I was on a course a couple of weeks ago and part of it was practicing emergency braking from the open road speed limit of 100 km/hr. There was no sign of it then. Will have to get hold of a dial indicator and check the rotors. I initially wondered whether it was glazed pads. Will report back in due course when I have time to do the job properly.
You can just use 1290 SD rotors. They are 320mm and have the same pattern. Rottweiler sells a kit with caliper spacers and longer bolts to run them.Could someone who have already changed disc brake, measure for me two diameters marked on attachment?
I can buy 320mm Galfer, Brembo disc in better than PowerParts price, but needs these diameter to be sure.
Hiya Dave!Need to take the 790 to a track day Geoff, get some good heat through those disc's. more than likely the disc's are causing a little pulsing, light sand with 400grit then brake cleaner, then some serious braking to get an even heat through the disc rather than hot spots.
My Multi has pulsing brakes, i purchased it with low kms and it did it from the day i got it, it was common on the Multis that weren't thrashed in braking in the disc's, I've lived with it for 70,000kms. i often sand the disc's then clean with electronic cleaner, and they are good for 3K, but the pulsing returns, its due to hot spotting on the disc's and brake pad build up on those spots, caused where from not getting consistent heat through the entire disc early on.Hiya Dave!
Yep, a light sand and check the pads is my next step to see if it has any impact. Haven't done a trackday since I sold the GSX-S. Might have to treat myself for an upcoming 72nd birthday :grin: . There's a long straight on a side road not far from us so in the meantime, I'll have to see if I can get some heat into them up and down there!
Good info thanks Dave. Away on grandparenting duties from this afternoon for a few days but will have a go as soon as I get back and let you know how it goes.My Multi has pulsing brakes, i purchased it with low kms and it did it from the day i got it, it was common on the Multis that weren't thrashed in braking in the disc's, I've lived with it for 70,000kms. i often sand the disc's then clean with electronic cleaner, and they are good for 3K, but the pulsing returns, its due to hot spotting on the disc's and brake pad build up on those spots, caused where from not getting consistent heat through the entire disc early on.
Ok, thanks for info, I know that 1290 have 62mm center hole and e.g. Duke R 690 52mm and was curious which one KTM chose for 790.You can just use 1290 SD rotors. They are 320mm and have the same pattern. Rottweiler sells a kit with caliper spacers and longer bolts to run them.