Shimano XTR / Saint Brakes – Freeza SM-RT99 Disc Rotors Quick Check

Shimano XTR / Saint Brakes – Freeza SM-RT99 Disc Rotors Quick Check


Hey everyone, in the world of Shimano the
Freeza rotors are considered to be the Cadillacs, and even with the introduction of the new XTR or 12 speed that brings a new version of these to the table,
these are still considered to be some of the best so let’s take a closer look and see what they’re about. The box is very similar to the one of the XTs, with the exception of these tabs here that are made of gold. Maybe that is because these are XTR or Saint brakes which both use that as an accent color. They do come in four sizes, from 140mm to 203mm. RT99 is the product code, Ice Technologies, FREEZA model, They are Center Lock discs that use
an aluminum spider and work perfectly fine with resin or metallic pads. Aside from that, box is rather ordinary, it doesn’t provide you any more information. Looking here at the back is the product code and an UPC code, but you can see
here that these are made in Japan. And here is the disc! Also in the bag
you have a lock ring, and the user manual. Ice Technologies from Shimano use a
sandwiched braking surface here, in which you have an aluminum core, sandwiched in two pieces of stainless steel. What they did with the Freeza rotors, they
extended that aluminum core down as you see it here. This is like an extra big fin just to dissipate heat. A close look at a disc will show you that this
is made in Japan, the size, this is 160mm. Next is the product code which we know
already – RT99, Shimano disc- yes we know. The discs are directional, you can see
the arrow over here, but you can only install them one way anyway. You have a minimal thickness of the disc. If it comes down to 1.5mm they suggest to replace it. Straight out of the factory it comes
as a 1.71-1.72 millimeters. One of the spider arms has Ice Technologies FREEZA painted or etched on it. And aside from that there’s not much
to see at the back of the rotor. Compared to the previous Ice Tech
design, you can see the same two-piece construction, aluminum plus the steel
breaking surface. However the Freeza has the cutouts here on spider, probably to
cut weight. And also the cooling fin as an extension of that aluminum core. Weight of the 160mm FREEZA is 116 grams You also have to consider the weight of
the lock ring, they are either 8 or 9 grams depending on which one you use,
more about that in a second. If you were to compare this with an XT Ice Tech which is RT 81, they’re pretty much the same weight even with the added fins over here. And the 180mm FREEZA by the way
is about 135 grams. Just for comparison, a
160 Ice Tech, IS 6 bolt is about 112 grams obviously you have to add the bolts to
that weight. You might be tempted to use a 6 bolt disc with your Center Lock hub.
You can do it using an adapter like this and that would add about 25 grams to the
mix. The installation is fairly simple and it requires 40 Newton meters as you
see it here on the two lock rings. Rotors are coming with this lock ring, but with any
of the current bikes most probably you’re gonna need one of these as well. Installation is very simple. If we’re talking about the rear, 12mm
axle or QR front or back, all you need is the provided lock ring and a cassette tool. Thread it in by hand, grab your torque wrench 40 Nm and you’re done. The front 15mm axle is going to require this other lock ring. This usually comes with the wheels it doesn’t come with the disc. or you can purchase it separately. To tighten this up, this is 40Nm again. You can use either a wrench, bottom bracket tool, just like that. or get one of these sockets and tighten it to 40 Newton meters. Make sure you remove this warning label here then spray some alcohol and clean up your
disc. The code for the new FREEZA is RT-M900 and they’re very very similar to these. The cooling fins are painted black and they redesigned the spider
saving a few grams in the process. Aside from that these old XTRs now are
really good, if you can find them on sale and you have a Center Lock
interface I would say go for it At least you can make sure that you’re
using the best Shimano has to offer in terms of stopping power and cooling
performance. And that’s it for today folks! Click on the screen for other
Shimano discs reviewed. Don’t forget to subscribe and look for more details and links in the description. And until next time I will see you folks on the trails. Cheers guys, cheers!

15 Replies to “Shimano XTR / Saint Brakes – Freeza SM-RT99 Disc Rotors Quick Check”

  1. I have these in 180mm version. Apart from performing great, these also sport probably the best looks out there. However, last year I've managed to do something to these (probably contaminated), so that these start squealing like crazy. Tried different methods of cleaning and changing pads (afterwards) but no luck, had to replace (although there was a healthy amount of thickness left: around 1.68mm) =

  2. They became thinner than the early version which I purchased four years ago. Mine are 1.8mm thickness and minimum 1.6mm.

  3. "Made of gold". So remember, don't throw the box away. Another nice video, Shimano appear to adhere to the usual Japanese standards when they engineer and manufacture bike parts. A consumer can have great confidence in them.

  4. shimano rotors in general are shit, they just never come straight and the ice tec is utter garbage as they just melt away once they get too hot

  5. I wish they make a 6 bolt version too. I like centerlock rotors but my current hubs are 6 bolt so I’m running ice-tech rotors with my Saints.

  6. Hi, very nice video, i would like to ask if it's ok to apply anti-seize or loctite blue threadlocker for installing lockrings and brake caliper bolts. Thanks

  7. How do saint brakes compare to xtr are the new xts just better all round or do saints have some benefits over saints?

  8. I run these on my Scott Solace road bike. Came standard on the bike. They look great, and perform very well. I weigh 200lbs, and the rotors never rub, even when sprinting.
    Personally, i think they look way better than the aero Ultegra and DA rotors.

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