SRAM X9 Medium Cage Rear Derailleur
Description from SRAM’s website:
• 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.
• World Cup Proven Composite Cage
• Outside Facing Limit Screws - Intuitive Adjustment
• Sealed Bearing Upper Pulley
• Di.R.T: Direct Route Technology™
• 1:1 Actuation Ratio™ Superior Shift Quality
• Weight: Short 212g / Medium 227g / Long 230g
While visiting a local bike shop I picked up a SRAM X9 medium rear derailleur. Back at the home shop, I got the stand out and pulled the old rear derailleur off my bike. Installed fresh cable housing and pulled fresh shifter cables. I then installed my new SRAM X9 rear derailleur. At this point I sighted down the top sprocket of the SRAM rear derailleur and lined it up with the smallest cog on my cassette. Pulled the shifter cable through the rear derailleur and bolted it down. I looked at my work and checked the cable housing again to insure it was all seated correctly.
So I began spinning the cranks and found no signs of skipping. Next I ran through the gears, up and down, through the big chain rind, middle chain ring, little chain ring and back up. No skipping, a little chatter, but nothing a dial of the barrel wouldn’t fix. I made one twist of the shifter barrel and the chatter vanished. I thought to myself, “that was easy” and took my bike for a spin in the neighborhood for a test. I was surprised to find that the X9 shifted clean, shifted perfectly right from the bike stand. I ran though all the gears while peddling and then hammered it up a hill while shifting to see how well it handled shifting under a load and every time it shifted and completed the shift with zero chatter or skips. I’ve built many bikes over the years and I pride myself in how tight I can get my shifting dialed in. But SRAM’s X9 rear derailleur makes it so easy to dail in, that there’s no magic to it.
My first trail ride with the SRAM X9 was uneventful… and this is a good thing. I didn’t have to bother with the shifter adjustment at all. It was still dialed in right from the bike stand and the shifting was very clean. I hit most of the gear range that day and everything performed perfectly. A couple of days later I took my bike out for another spin. Expecting to have to adjust the shifter barrel a bit to compensate for cable stretch I was pleasantly surprised to find that it was still dialed in and no adjustments where needed. Same goes for the third ride. On the forth outing, I did notice a little chatter coming from the rear derailleur. So I made a 1/4 turn of the shifter adjustment barrel while riding my bike to take up a bit of cable stretch and the chatter stopped instantly. The cable finally settled in after a few more rides and with a couple of additional adjustments to compensate the X9 was set.
As for X9’s performance, it was very apparent that this derailleur meant business. Every time I hit the shifter the X9 would engage instantly… no hesitations, it slammed right into place and the chain followed it’s command, with zero chatter during the shift and the action of the shift was clean and precise! I was also very pleased with the performance of the X9 while shifting under a load during climbs. It’s one thing to test it around the neighborhood, but it’s a completely different story when you’re out on the trail and this is the real test and the X9 performed like a champ! Shifting loaded or unloaded the X9 did it’s job and did it well.
I couldn’t have been more pleased with the performance of the x9. Durability translates to X9! Since I installed my X9 I have put it through the ringer, it’s be smacked by logs, stumps, dragged across the ground during wrecks and pelted by rocks, yet it is still in great condition and the mechanical components are still tight and responsive. I recently replaced the X9 shown above that I had installed on my geared full suspension, with an X9 long cage. I’ll be migrating my older X9 Medium Cage Rear Derailleur to a 1×9 I plan to build up in the very near future. I know I can count on my X9s for many years of use and they’ll take the beating I’ll throw at them!
Worth the price? Yea, it’s worth every penny I dropped on it, otherwise I wouldn’t have purchased another one. I’d highly recommend the X9 to a friend and if you’ve never tried one before… next time you’re in the market to purchase a new rear derailleur, you should definitely keep it in mind as a possible solution. I’m certain you won’t be disappointed.