- Reviews
- Q & A
Looks, stopping power, cooling!!
- Familiarity: I've put it through the wringer
These things stay cool when clamping hard and really flexing their stopping power. They stay cooler than any other rotors i've ever ran. They also look awesome with the cooling fins and sweet cut outs. Need i explain how well they stop? they stop on a dime. well worth the price.
Wish they came in a 6 bolt but oh well.
Very Noisy
- Familiarity: I've used it several times
I got these originally for a new set of wheels I bought for my GT Grade bike. Although I broke them in very meticulously as described in the instructions, they squealed every time I applied them. Although they stopped the bike, the squealing was obnoxious, so I called Competitive Cyclist to see if there was something I could do. He suggested that I send them back and get them replaced with the same rotor. I had them replaced and I have the same obnoxious squeal every time I apply them. I have had several other bikes with disk brakes and have never experienced this with any of them, and by the way, I never had to go through a ridiculous break-in procedure. I debated giving them a two star. BTW, I had new pads on when put the second set of rotors on.
All you need
- Familiarity: I've put it through the wringer
All the stopping power you will ever need. I used these for steep downhills and have yet to heat them up enough to compromise performance
Much straighter and stronger than 6 bolt
My 6-bolt rotors would almost always be wavy right out of the box. The centerlock rotor is straighter and seems to be stronger since I've yet to bend one or even have it become wavy
True dat!
- Familiarity: I've used it several times
I was apprehensive at first to go away from 6 bolt but I was surprised by how true these were. Stopping power is about the same.
Best rotor for Centerlock
If you have centerlock and want the best rotor out there, here it is.....Really wish they'd make a 6 bolt version of it though.
When in doubt, XTR
- Familiarity: I've put it through the wringer
Serious bit of tech. Feather light, looks the business, and the highest performance. I dont think i push these rotors hard enough to test the cooling, but they certainly have plenty of bite all the way down my steepest DH segments.
Do not recommend with sram brakes
- Familiarity: I've put it through the wringer
These work great with Shimano calipers as intended; the regular Centerline and Centerline X do fine as well, but I experienced a catching sensation with these rotors and SRAM Force calipers, presumably due to the larger pad area grabbing the rotor arms each revolution. This contributed to some accelerated pad wear and imprecise braking.
Though you'll see plenty of people running the setup, I do not recommend it. There are plenty of other combinations you can ride that won't wear your pads unnecessarily fast.
No Slowing Down A Vintage Cerwin Vega
- Familiarity: I've used it once or twice and have initial impressions
The SHIMANO XTR SM-RT99 CENTERLOCK DISC ROTOR works perfectly for my vintage Cerwin Vega AT-15. Normally I would use this smaller rotor on the rear wheel but this time I used it to help make the modern high frequency driver fit on the vintage cabinet. The vintage driver was slightly larger in diameter. It looks so good I am surprised Cerwin Vega isn't using shimano xtr components. It did take some minor modifications like drilling out the rivets in the rotor to remove the center lock piece. And, the HF driver needed some sawing on the asymmetrical mounting bracket on the back to fit. But even though this is not it's intended install, it fit with less than a mm of tolerance. Check out the photo of my updated and highly modified Cerwin Vegas I brought back from Arkansas from a dear friend.
Shimano Components are found in a lot of products, now even speakers. I am taking my vintage Cerwin Vega on a ride through the rock gardens and Classic rock rocks on shimano!
Light, 12 mm locking included
- Familiarity: I've used it several times
160 mm is 115 g and lockring included. Light and easy to mount. The lockings work for 12 mm through axles but not for 15mm in the front. Needs a different locking! Comp Cyclist should start to stock these!
Good brake modulation, I use these with XTR race brakes and there is no lack in stopping power.
Light, Quiet
- Familiarity: I've put it through the wringer
super lightweight, quiet while braking - even in wet conditions. I use with a non-XTR brake set - just SLX level - and they work just fine.
Freeza
- Familiarity: I've used it several times
These are centerlock only rotors. Must have center lock hubs to run these rotors. The freeza technology mix with ice tech really keeps the heat down and braking power consistent. Help to not burn up rotors after a long descent.
Stop on a Dime
- Familiarity: I've put it through the wringer
I put these on my Ibis Mojo 3 and have the Ibis 742 wheelset - you'll need hubs with centerlock. I wanted an aggressive short travel bike and bought a 203mm in front & a 180mm rotor in rear.
Pros:
- Lightweight
- Cools fast
- Stopping power is next to none
- Easy to install and remove if need be, considerably easier than dealing with 6 bolt rotors
Cons:
- the 15mm (or 20mm) lockring does not come with the rotor. And like Geoff T noted below, they're a bit of a hassle to find. That said if you're lucky enough to have a good local bike shop, they're likely to have one.
The bottom line is you can't beat these rotors. They're light and work great if you've got hubs with centerlock.
What is the thickness of a new rotor and at what thickness should this rotor be replaced?
Creme de la Creme
- Familiarity: I've put it through the wringer
To use these, you must have Centerlock hubs! If you do, look no further for a rotor! These are light, durable and cool extremely well. I highly recommend them.
Is the rt99 180mm heavier than rt98 180mm rotors?
Manufacturer weights show the RT99 as 130g vs. 122g for the RT98. However, you would experience drastic performance advantages by improved heat management on the RT99s aluminum fins
part needed for thru-axles
- Familiarity: I've put it through the wringer
You need a SM-HB20 lock ring to use these rotors with a 15/20mm oversized axle. These are hard to find.
best of the best
- Familiarity: I've used it several times
I had the icetech rt86 rotors that wouldn't stop squealing so when I upgraded my pads (truckerco semi-metallic organic) I switched out the rotors too the new rt99 and they are awesome. new setup doesn't make a sound and stopping power is definitely better. cant tell if its the pads or the rotors or both, but I like the upgrade to say the least
I want to know the distance of two bolt(opposite side) at inner side of disc. Size of disc is 203mm
What does the 160mm SM-RT99 weigh?
What does the 160mm SM-RT99 weigh?
Actual Weight:
SM-RT99, 203mm: 171g
I GOT TWO OF THOSE IF YOU NEED ONE