New, Beautiful, Heavy! Dura Ace RT-CL900

Since it was time to swap brake pads to the new L05A, I took the opportunity to swap the rotors as well... the new second generation Dura Ace rotors, RT-CL900 was release just a week ago, so had to try!
This is mostly use it as an excuse to make another descending video though 😇
Uncut Descent: • Uncut "Tomin no mori" ...
You check my Strava ride for location of this “Tomon no Mori” descent.
strava.app.link/VjrXPuDsRsb
Bedding in new brake pads:
• Bedding in new brake p...
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Strava:
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T - S H I R T S
ridesofjapan.com
Music is from:
www.epidemicsound.com/referra...
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S U P P O R T
☮️Those who really need your support☮️
➡︎ donate.redcrossredcrescent.or...
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Chapters:
0:00 Intro
0:56 New pads and new Rotors
2:30 Shimano RT-CL900 Details
5:44 My caliper centering technique
6:30 Additional remarks
8:30 Budget option
8:50 Descent proper starts
15:00 My conclusion

[@DummyUrD]

The thermal properties of the Dura-Ace is that it vaporizes your money faster.

[@E.T_rode_bikes_As_well]

Finally it all makes sense!

[@TheNeelonRokk]

And the wallet screeches like metal brake blocks in the rain...

[@kerbodynamicx472]

It reduces weight by emptying the wallet.

[@sugarpill6006]

Crying in broke.

[@SpeedBoosted136]

It's funny how stupid people are, and what I mean is: many look that lighter rotor is better(cuz it cost a lot), but actually brakes work the way that Rotor absorbs energy by heating up and it's mass, yes - mass, directly related to the temperature they get. So if you put a 50gr rotor, it'll get burned twice faster than the 100gr. Here adds up a cooling, but it's a secondary value, not primary

[@SAFABrian]

Didn't even know there were new DA rotors out. That's why I follow this channel. They do look niiice!

[@Pablo_Coach]

Could you tell me why did You use 32c tires, though 25c gives the highest aero gain?

[@lpeterson4550]

Came for the rotor chat, stayed for the amazing fast flowy ride footage

[@DutchDude90]

Great production value as always! Love to descent there someday.

[@christopherhood9241]

Love the intro ... a real file maker in the making. .. Having not seen anything new for a few weeks from your good self, my friend 'bokeh' & I were getting concerned. Great to see a new video.

[@romanpramuka2703]

A few days ago I've installed Galfer wave road rotors, replacing my MT800 rotors. They are 10g lighter at each size. After few rides with also new pads, they perform perfectly, maybe even a bit better. One big difference is, after heavy breaking when they become hot, they don't start ticking like with Shimano, when you need to wait for cooling down. For me 👍 Galfer rotors.

[@NickPavlenko]

Switched to Galfer pads (road specific) and also very happy with the modulation and fading properties.

[@siupongwulau9315]

I agree with u 100%. In my opinion Galfer are the best disc.

[@Pablo_Coach]

@@NickPavlenko which exactly? Black, red or blue?

[@NickPavlenko]

@@Pablo_Coach Blue, I think they're called "Road".

[@michapachocki9093]

My experience is that they (galfer rotors) squeal after a while. Shimanos dont. Tried with different pads

[@dgianstefani5694]

You want more weight in your discs, gives thermal buffer, preventing overheating and therefore warping. It's physically impossible to have a disc that's ultra light that won't overheat from braking and deform eventually.

[@kerbodynamicx472]

Despite the name, Dura-ace isn’t made for durability lol

[@dgianstefani5694]

@@kerbodynamicx472 interesting since maintained parts easily last decades.

[@stuartdryer1352]

I think that you're right about rotors.

[@StClairCDN]

I want rim brakes

[@fkrr5]

@@StClairCDN Recently got a bike with disc brakes. It's not worth the hassle, especially if you live in a flattish area.

[@peterthygesen1754]

Love the video as always brightens up my day every time

[@nochancecw]

I am so glad they added weight. I'm 90kg, and I destroyed the last generation Ultegra. Ive switched to MTB xtr Rt-900 and it did help a lot. I think the extra 10-20 gram saving isn't worth it with safety systems. Safety systems like disc rotors should compromise a bit to be more reliable. Thanks for the video.

[@timcarman5238]

love the thought put in to all your videos, ty

[@serppint8080]

What a beautiful road!!))Thanks for support in the end!

[@josech]

6:20 The Athletic socks… love them!

[@d1ecast]

About the lock rings - the external type is more bulky and this can cause issues with some forks that have limited clearance. Usually where the fork bulges to accommodate the mounting hardware for the caliper.

[@AndriiVash]

Thank you for support, was kindly pleased 💙💛

[@Fear.of.the.Dark.]

This new rotor actually solved my ticking disc brake rub issues after descent. I had the older ultegra ones from the previous 11 speed series. Finally some good progress.

[@derek3057]

Thank you for this video, great info on the new discs.

[@paulschectman6586]

That roadway is insanely perfect. I have never ridden on a road surface that smooth.

[@robr5504]

Thanks another beautifully crafted video. Its always refreshing to see that (IMO) you’re less concerned with producing content just to drive the KZbin business model and more concerned with creating a great viewer experience. PS - what’s that green jersey in the opening?

[@ridesofjapan]

Cheers mate... I could have titled the video "I wish I knew this before..." or "5 things to know about..." but then I would have to jump off a bridge 😁 The Jersey is Safa Brian artist jersey from Pedal Mafia

[@gunarstreikals2099]

Still on old dura-ace rotors and seems like a good time to upgrade to a new black Finnish bling item ) thanks for video and damn that road looks premium

[@quadraproptic]

The piece of paper centering trick is great!

[@bobgibson3516]

Thanks for making such a nice video 👌

[@Miekzz]

come for the bike and parts stuff, stay for the descent footage 😍

[@jonathangapay1724]

The new packaging looks nice. 👌

[@Biketech4us]

Your roads are just too awesome

[@Buansteven]

Was waiting for someone to review this new rotors.

[@Go_ride_your_bike]

I love the in depth talk on parts and preformace of your channel. Keep up the good work. I would love to hear what you think of suspension on gravle bikes. 🤔

[@StartYourLegs]

I have them too in 140mm. Love them!

[@vivaaloha2020]

Nice work! Your videos are💣

[@Kris-ek5sy]

Nice ending. Thanks.

[@fradd4045]

just the best, thanks!

[@mr.z2618]

I always wait for your video. They are crafted so well, the stunning Japan country side, vide editing, music, visuals are just exceptional. 🤌

[@minyahson]

Only one minute into the video and already amazed (rofl) how you come up with these great intro's 🤣 Now onto the next 17 minutes

[@kidShibuya]

I love the ticking noise when I get home. But anyway if I were getting heavier discs they would be swissstop rotors.

[@markhaneklaus282]

wow, smooth tarmac, rare motorists and the route profile , wow, wow , wow

[@donttouchthisatall]

YAAAY NEW VID!

[@darrenhitchcox6345]

I had the Shimano Dura Ace calipers, but found them just so so. I swapped to Hope RX4 calipers with ceramic pads using XTR rotors and these are the best brakes I have ever used. They are silent, work just as well in the wet and lighter than Dura Ace

[@rasmuswi]

They are an absolute pain to set up, though. The pads tend to end up within a hairs width from the rotor, which makes centering a total nightmare. But I agree that they bite like crazy, and once they are properly centered they are of course dead silent.

[@darrenhitchcox6345]

@@rasmuswi I am using Di2 GRX levers, so the pads are just a bit further back, so I have not had the centering issues as bad. Bleeding them is an utter pain compared to Shimano, but once done....wow

[@rasmuswi]

@@darrenhitchcox6345 also using GRX, but mechanical. Still a pain. It's a bit easier on my 3T Exploro because it uses post mount brakes, and they are WAY easier to adjust than flat mount.

[@torstenfrank1856]

Oh man, I so wish my Sram brakes would have anything near that nice wide pad to rotor gap you show around 6:50 in your vid... Definitely a big plus for the new Shimano Groups. Well, you can't have it all, I guess... ^^

[@28Jcarlo]

Miss you brother keep posting stay safe 🤟🏻

[@lookinforanick]

Your intros are the stuff of legend. Amazing concept and execution. I need to ask, what are those socks we can see you wearing in the video?

[@ridesofjapan]

1st gen ekiden socks from the athletic. (Probably not for sale now) Cheers! 🙌

[@ACDCEVER4]

idk how you do it but somehow you make every topic interesting. I really enjoy your videos man.

[@livibam]

Got it on my BMC Teammachine SLR_01 .. love the hoods

[@nobuyukidu94]

Damn that’s fast! Are you sure you are hitting the brakes? Haha I’ll stick with the old rotors for now :)

[@Kirinji1kirinji]

That red bridge footage at the end actually happened way before the decent 😏Tsk, tsk, continuity, Tobias (just kidding, enjoyed the video as always)!

[@thecappy]

Rotors are pretty but I stick with SRAM rotors, nice and lite. Those pads are like gold. Can’t find them anywhere.

[@ej.xxxx_]

Beautiful mountain roads damn

[@TDZed]

yes! paper is the best way to set the caliper.

[@PowerRanger83]

I don't know if it is possible to incorporate, but it would be awesome to see the speed you are going down the decent.

[@wasupwitdat1mofiki94]

Looks like from the packaging these new CL 900 rotors don't come in a 180mm size. I use a 180mm up front on my road bike with the Peak Torque Adapter and a 140mm in the back. Perfect balance stopping power. Weight isn't a factor for me, performance is. I also like the MTX Red Label ceramic pads better than the Shimano pads.

[@kulasisi08]

My Rt900 was warping like crazy on long descent. Replaced it with Mt 900 problem solved.

[@Lestat1795]

€35 for the Ultegra would be a steal. Stuff got so expensive. Got the XT 160mm for my brand new Mason Bokeh for €45 a piece.

[@8rk]

You make me wanna move to Japan!

[@cosmonott1]

Great video! What jersey & cap are those? They look great! Also, what do the final peace logo colours (blue/orange) signify? Thanks in advance.

[@richardcarr6493]

WITH A 140MM ROTOR ON THE BACK YOU ARE PLAYING WITH FIRE

[@thedownunderverse]

Why? It makes sense to run smaller rotor on rear

[@bobcabot]

again: what´s up with the Japanese roads? perfectly polished, i love it! and they do have serious respect for their mountains to wrap them up in beton, just in case of causa...

[@JRd941]

Intro perfecto 👌

[@howlinhauler]

is there a shuttle to the top. cant wait for this!

[@dakalla]

What an epic descend, so flowy and fast! Wish I could ride there one time. But going up its not very cyclist friendly, as cars cant even give you enough space with that middle pillars.

[@pdrmnds]

that truck at 11:56 gave me an adrenaline spike. scared the shit out of me 😅

[@IIISentorIII]

@@pdrmnds same here, we drive on the ride site of the street in Switzerland so for a moment i was like... omg... :)

[@dakalla]

That left hand threaded axle actually makes sense. But i guess other bikes dont have it, as it would never get so stuck to loosen it. BSA bottom brackets even have it wrong way round on purpose, left hand thread on driveside! 🤦‍♂

[@LoaforDie]

I want to try new DA rotors and these will be perfect but not in stock when I’ve looked online.

[@Ropetable]

haha yea i also center the calipers by eye. its the only method that always works eventually.

[@kurtsullivan7965]

The mountains look great. Ever since moving to the east of Tokyo I really miss having easy access to mountains.

[@denis_roy_7]

Merci!

[@ridesofjapan]

Thank you! 🙏

[@rondar2]

I am not against disc brakes in fact if I buy a new bike I would prefer one with those however I really can not find any fault with my usual rim brakes either even on long and fast descends. If you are an average rider, know what you are doing and have good pads like a pair of swissstops rim brakes are perfectly okay at least for aluminium wheels.

[@JohnnyMotel99]

I wonder how many extra kmph you get with the red super-grippy road treatments?

[@dominicbritt]

On rails geezer!!!

[@antonlasy7501]

Hey! Great as always! What camera do you use these days? is it a gopro? And where do you mount it for that angle. Thanks!

[@ridesofjapan]

Will make a video about it on the BTS channel, stay tuned. Cheers!

[@waxedgoat]

Hey. Did you use the new L05A pads too? No noticeable difference with them either? Cheers

[@mawis555]

Hey. Happy channel visitor form Poland want to know what are those gloves which you are useing in this vid. Have a happy and save rides ;) Keep it going man

[@ridesofjapan]

Some pearl izumi gloves Cheers!

[@Blindbat1337]

ROJ=Happy Sunday!

[@topbanana4013]

yes radiator paint was also black to disperse heat faster like the ones in school. black is the most efficient colour for heat radiation

[@topbanana4013]

methods to everything i also use eye to aligned pads. and gently tighten each bolt evenly. to much 1 side the caliper moves lol

[@robinrai4973]

Are those Dura ace pistons resin? Surprising given XT and above (and maybe SLX) are ceramic if so. Lovely coverage as usual

[@ridesofjapan]

I assumed all pistons was ceramic, but I have no idea.

[@robinrai4973]

@@ridesofjapan ah alright, I thought Shimano ceramics are white, but I could be wrong for road parts Sick ride as always

[@jovan.vuckovic]

I could be mistaken but I think that white ceramic pistons were bad, a lot of complains with them breaking (mine XT broke too, both calipers, twice) so maybe they don't produce them anymore

[@denis_roy_7]

Thanks for the video! So even though the RT-MT900 are meant for MTB, you can use them on a road bike without any problem? Thanks!

[@ridesofjapan]

Yes!

[@andycorso8498]

Campagnolo for the win though 😀

[@nastycooperation9901]

We realy need a video where you show us how you film your downhill run. Diggin the look! Just a go pro wirh chest mount?

[@ridesofjapan]

I’ll try and make a video on the BTS channel eventually. But, no gopro.. I use a DJI pocket 2

[@nastycooperation9901]

@@ridesofjapan THX for the Reply

[@MrSzwarz]

The roads are soooo good that you can fall asleep.

[@eberlined]

I see a new Garmin Edge 1040? If so, would enjoy hearing your thoughts and opinions beyond the initial impressions.

[@ridesofjapan]

My impressions are pretty useless as I’m not really a power user, definitely check GPlama and The rainmaker for all the details. All I can say is I looooooove the battery life, it’s insane how good it is taking into account all the functionality. The solar charging is a sweet bonus. I always hated the touchscreen garmins in the past but this has not given me any issues this far. I still wish they would put buttons at least for changing screens but, I’m pleasantly surprised with the touch screen. It is humongous though, and if they make a 540/840 with same battery life I would probably sell the 1040 and switch to that.

[@sebbelito2975]

How do you have so much grip decending so fast in such deep curves? :O The road looks wet and very slippery. Still you have so much grip and braveness to go full send

[@MxCraven]

You have a lot more grip than you think, but body position and braking before the corner is the most important thing you can easily work on. The other thing is wide tyres you trust to be grippy.

[@JNorth87]

Hey what part of japan are these roads? Might come up from vietnam soon.

[@cannon1156]

Was that on an 11 speed groupset? (i noticed the screwdriver head on the disc pad retaining bolt) I just recently swapped out my GRX calipers for a new set of Ultegra calipers from the 12 speed groupset. The extra width in the pad spacing also seems to help with stopping any disc rub. Also got a spare set of Campagnolo Ekar rotors to try. Not light but apparently the braking surface is all stainless steel . Not a sandwich of stainless/alloy/stainless like Shimano

[@ridesofjapan]

DA still uses flat head, Ultegra uses hex screws

[@PedroRibeiro56792]

What of the disc brakes you recommend for a bike road ?

[@carlosgaspar8447]

does the white paper need to be foolscap?

[@ThisIsNotMyHandle]

Vad är grejen med den röda asfalten?

[@dh7314]

Great video. Out of interest, does the red tarmac on the corners have a different texture for better grip or is it purely visual as a warning of the bend?

[@ridesofjapan]

No idea, you’ll have to ask the engineers about that.

[@aaron___6014]

I read that it's paint, so my guess is it's slippery when wet. In some places I it's the actual aggregate, handling is all going to depend on the mix design (aggregate gradations and the amount of binder).

[@newdebate]

mighty be epoxy with sand?

[@dh7314]

@@newdebate that’s what I suspected initially

[@ST4RJ3T]

Not sure how they have it in Japan. But here in Europe we use it as well (quite occasionally though), it is really a different type of tarmac. It feels the same but it is slightly rougher with bigger gaps between the stones forming the tarmac.

[@artt3231]

Quick question, for the 140mm disks, did you mount the rear caliper straight onto the frame (without the adapter)?

[@ridesofjapan]

Correct

[@ariffau]

The weight is okay. There are porkier ones like Swiss Stop

[@VeloNippon]

Same shape and weight of the Ultegra version of the rotors seems the only difference is the black painting and much lower price tag.

[@seanmccuen6970]

the RT-CL900 is far more elegant, better looking.

[@hardware4computer]

Nice video as usual 😃 Just wondering why you don’t loosen the bolts on the frame/fork, then squeeze the brake lever and then at the same time retighten the bolts to center the brake caliper? I thought that was the best method to have the pistons/pads correctly aligned, no?

[@davidcrane-pc3dq]

If your pistons aren’t extending evenly they’ll flex the rotor to one side as you squeeze the brakes.

[@leslie7922]

Subscribed because safa has

[@Dwyane1st]

XTR just looks that much nicer, and lighter, too

[@Bellerophon17]

About the "pulsing" through the lever because of an uneven rotor surface - does cleaning mean sanding down the rotor?

[@ridesofjapan]

If the bedding in process was messed up, just acetone or alcohol should do the trick

[@Bellerophon17]

@@ridesofjapan Thanks 🙏

[@al-du6lb]

I have to get back to the mountains. 😭

[@dd-zu8rf]

I like Galfer rotor by the way

[@dalescott3942]

Lovely video! TelL me more about the bikes - seems like the trek has been relegated and the Allied has been pimped out with road wheels. Do you just plain prefer it over the trek? Also need to pick your brain on how to get my titanium disc bike (Baum) lighter - love the bike but it’s sooo heavy.

[@ridesofjapan]

I'd say I've ridden both the same amount this summer.... It's just the recent videos focus on the Echo more since that is still evolving unlike the Trek that has more or less reach its peak in terms of build. when it comes to weight saving, check this video: kzbin.info/www/bejne/Z5mvoo2hodmhsMU

[@dalescott3942]

@@ridesofjapan will check it out! I guess wheels will be the first port of call

[@DurianriderCyclingTips]

go rim brake bro. My baum is 6.7kg with pedals.

[@dalescott3942]

@@DurianriderCyclingTips I should have got the Coretto and not the Orbis- it’s not needed here in Sydney

[@dalescott3942]

Hindsight is 20x20 Vision- if you know anyone with a size 55 going for cheap I’m your man

[@maikdd7680]

Can you recommend any Breaks with 6 hole mounting? I cant see any compatibility in the dura ace series here.

[@ridesofjapan]

6hole or center lock doesn’t matter, as long at it’s the correct diameter you can use them with dura ace or other disc groups. I personally use carbon-ti x-rotor with DA9270

[@maikdd7680]

@@ridesofjapan That is a big step up in my Breaking game. Usually I use a Shimano SM-RT56 Bremsscheibe (Deore) 6-Loch in the front and some Rim Breaks in the rear. It is a bit on the heavy side but never failed and only needed to be replaced once every few years. I doubt that these carbon rotors really last very long or could stop riders that are big and tall.

[@thebespokecyclist3624]

The best rotors actually, the lightest and best modulation is the Ashima Ai2 you find on Ebay and Aliexpress. Warping Shimano rotors are crap in every way and probably contributed to the anti discbrake movement.

[@GenuinePluko]

How about the LO5 resins, how do they improve on the LO3As? (which I found much superior to the LO2As)

[@ridesofjapan]

They feel pretty much the same… I’m guessing it’s about longevity, but I’ve not ridden them long enough to comment on that.

[@GenuinePluko]

@@ridesofjapan amazing thanks. I'm going to stick with my XTR rotors after watching your video weight weenie goals. But get the L05As as my pads are due replacing!

[@ua3453]

Still no sponsorship from shimano ? You make more content for them, even they didn't make for themselves. Enthusiasts hold this world!

[@abalem]

woosh woosh woosh 🌬I could feel the wind trhough my screen ! What type of lock ring do you need for the DT240 EXP, the external or internal one ? (I didn't even there were more than one type to choose from, erg...)

[@ridesofjapan]

For EXP hubs as long as it 12mm axles, you can use the internal ones. Cheers!

[@abalem]

@@ridesofjapan you just saved me 1g ! 🥹