SRAM X9 Rear Derailleur Medium

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SRAM X9 Rear Derailleur Medium

54 Reviews for X9 Rear Derailleur Medium

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 best product that SRAM make in their derailleur range - great value for money, strength to weight and all the shifting performance of the more expensive X-0 without the winch-inducing pain when you trash an X-0 in a crash

Sram's X-9 derailleur works as well as X-0 but much cheaper to replace, and you can add titanium / alloy aftermarket bolts to bring down the weight if that bothers you!
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 best derailleur, love the 1:1 ratio, solid as hell, can go on after 4-5 hits! it can take lots of abuse...once you try it, you never go back to shimano...I use to mess 2 rear derailleur XT per year but this one hold up for at least 2 years! and for the price you can't go wrong.
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 this deuraillier is amazing it will never snap in half in a hurry and the shifting is quik and crisp, only thing is that its a lil hard trying to keep the jockeywheels clean. but that jjust me being obsesive about having a clean bike. this is the best value for money deurailier from xc to dh it does everything with ease
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 Will never ride anything else! As you may know SRAM is truly an awesome company and makes an amazing product. Their X9 Lineup is perfect for anyone who wants a race worthy setup but with half the cost. If you want colors and are a true weight wienie, sure go for the X0 if not... X9 is your answer. I have smashed mine up and bent it back... works like a charm! This thing is as close to indestructible as any dérailleur can get!
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 Solid and crisp shifts. Haven't been running it for too long but I hear they hold up super nice. I've worked on my friend's bike who had run x.9 for about a year and it was SUPER easy to retune. Got to love the one-to-one ratio.
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 I use this derailleur for almost a year now and it is great, since it has experience with the spokes of he rear wheel it is still the same with great shifting condition. At the beginning I use it with Shimano shifter but it doesn't shift correctly, when I move to SRAM's one it becomes amazingly perfect. Again great product really tough, perfect for DH!
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 By enlarge the most consistant deralleur I have ever had. I raced one for the whole year in the DH, after another companies failed after about 10 rides. If you want to go out and trash and abuse your bike, you must have this derailleur to keep your chain in the gear you choose.
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 Possibly the best value component in all of MTB. It's rare that a company makes a 'second' tier product so good that it actually takes sales away from their top tier product but SRAM's done it... For awhile now, I've been making excuses to buy X0 but there really are none but weight. The X0 shifts a little more crisply thanks to a stiffer spring but the X9 will leave you wanting for nothing.
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 I've been riding this for the last two years and it's held up to all kinds of abuse. After multiple hits, scrapes, crashes and broken hangers this is still running and shifting as well as when it was new. Match this with an XO front trigger and you get an incredible package while saving a fair bit of cash.
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 Basically, if you want the best shifter possible without going broke, buy this. Shifts great, and is durable besides. No wonder they're on 99% of all high-end DH/FR/AM/XC bikes...
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 Decided to change from Shimano to Sram. I will never look back. The X9 is amazing. Shifts fast and super smooth. I would highly recommend it to anyone you will not be disappointed. Sram > Shimano
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 can tackle any terrain easily without jumping gears and also shifting is nop noch. it is also reasonably light and can improve your bike ride dramatically with a good reasonable price tag.
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 It do the job every time even when full vovered in mud. Smooth shifting due the 1:1 ratio (far better then Shimano). Easy to set (set it once and just forget it, nothing to share with Shimano...)
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 Had a few x9s on my bikes, they are strong and reliable, but after a year or so they can start to have a bot of play, you can still use it (or make a shim) but it does not shift as nice.
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 Totally awesome derailleur if your looking for a derailleur that wont bust your wallet but is still amazing then this is for you I have it on my custom Jamis Diablo 2.0 and shifts like a charm!!
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 i just started racing dh, and deraileurs have always been somethings that have confused me, yet i was able to install, tune and run the X9 with put any help. very easy to use/tune very strong as well
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 Has never failed me. Crisp, ultra-precise shifting every time. Add this to unquestioned durability and comparative price with other brands, and you have a mech that will last quite a while.
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 2 bikes, 3 summers of dusty, rocky park fun and 3 winters of muddy trail-riding goodness and she's still going. excellent quality and just doesn't break. if only cables and housing could ever be this durable...
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 this is insane budget deraillier. changes smoothly when given care, takes all kinds of abuse (look at dmrrider91's photo of me being crashed into, cos it survived even that!!) so yeah, definitely buy this!!
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 Have it on my wife's bike and she is very finicky about the shift. The X-9 does great and I never hear any complaints like I did with the lower grade shimano. Very dependable!
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 Smooth transition between gears, shifts dirt and muck easily. Practically maintenance free, clean and squirt of lube is all it requires!
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 I really like this derailer. I've had three so far, and they've all done very well. They do tend to crack in half, but then again, I use them very hard.
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 This derailer has done its job for me just fine.ran it on my banshee for 5 years with no problems and no extensive wear.its goin on my konig soon.hope it lasts awhile longer.
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 good strong derailur had hit mine hard on curbs and rocks and took a beating before it broke but i liked it so much i bought another one
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 Got this a few weeks ago and it's the best dearailleur I have ever used. Changes gears very quick. From what I have heard from friends these are very long lasting too!
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 super powerful, light, simple, reliable, great clamping system, and it looks cool as well. this is definitely the go-to derailleur, and it absolutely lives up to the name.
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 Great mech had it for over a year its pranged rocks and took some hammer never bent or snapped as of yet, seems very strong and reliable.
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 The X9 work really well, I have it matched with a X9 shifter. I have had no problems with either. I think it feels better than Shimano XT.
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 A thoroughbred workhorse of a rear mech. Does it's job damn well, priced nice and it is going to have loads of options for 2011 as well.
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 not a great fan of this, i had one and replaced it with an SLX shadow. It didnt seem no where near as reliable as my SLX and shifts didnt seem as crisp
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 When you set it up right the shifts are very crisp, and so far it seems to be pretty durable. Only downside is its not fully rebuildable like th XO.
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 After some initial productions issues this has become a solid AM rear deraileur. It shifts extremely well matched with the x9 shifter.
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 Man this is one great rear..I hooked mine up with the Sram flak jak cable and its really smooth..Also I put on a ALUM pullie and its awesom..and for the price u cant bet it..
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 This thing is great. Good, crisp shifting, and when matched up with X.0 shifters, it's unbeatable. I would recommend this for anybody.
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 i run a 9 speed cassette and have had no problems whatsoever and it shifts lightning fast
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 Very solid derailleur, AMAZING shifting, and not to large of a price tag. Will never go back to a Shimano derailleur again.
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 great derailleur for a reasonable price, reliable shifting, nice and light, what more do you want?
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 great! way cheaper then the xo and definitely one of the best derailleurs out there for dh/fr/am just buy one!
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 great shifting but its a derailer so its goin to break durin a good downhill beating or two like any
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 Will not ever go back to xt after putting on a sram x9 shifts way better and a lot less bounce great springs in the sram X9
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 Upgraded from an x7 medium cage to an x9, no regrets
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 very good, shifts fast and well and very strong and reliable
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 best mec iv had yet and iv had shimano 09 saint and loads more
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 Great product, fast shifting. Never had a problem with this derailleur
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 best rear mech out there. would never go back to shimano.
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 great solid shifting, moderately light derailleur
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 good quality, nice price, works better than a shimano.
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 super light and super crisp, great RD for the money.
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 Awsome shift, keeps chain tensioned well.
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 Best Quality in a product by far, x-9 is the best bang for the buck!
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 nom nom nom nom nom nomn
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 Really smooth shifting
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 good value, strong
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 Shifts realy smoothly
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Avg: 5 (54 votes)
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SRAM X9 Rear Derailleur Medium (MSRP $99) — # Stylish and Strong! A forged 6061 aluminum B-Knuckle improves stiffness while the X.9 styling exudes our commitment to quality. X.9 is now available in three cage sizes.

Specifications Compare to other Derailleurs

Release Date 2009
Price $99
Weight 226.79 g
Actuation Ratio 1:1
Actuation Ratio - is typically seen in shifters and derailleurs. SRAM primarily uses 1:1 ratio while Shimano primarily uses 2:1. It is imperative that riders check to make sure that their shifters and derailleurs are compatible with one another. If they are not compatible, they will not work.
Speeds 8/9
Front or Rear Rear

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