The cable you have listed is brake cable NOT shifter cable. My current favorite shifter cable :https://www.amazon.com/Shimano-Opti...r_1_4?dchild=1&keywords=shimano+optislick+shift+cable+set&qid=1593799553&sr=8-4

GX, X7, X9 just make sure the amount of speeds are correct ie. 10 speed. SRAM uses 1:1 shift actuation ratio.

I wouldn't assume because a hanger is flat its going to be properly aligned. I always use a hanger tool when in doubt.

 

If you haven't checked it with a hanger alignment tool *when it's on the bike* there's no (sensible) reason to think it's straight. I'd never assume any hanger is straight unless 1) it's been checked, and 2) you are certain the bike has never been dropped; new bikes straight out of the box often need the hanger alignment fixed.

 

The best way to replace a Sram derailleur....is with a Shimano one. Ok, I kid...kind of. But to mirror what Keen said....it makes no difference if you're using an X9 derailleur with an X7 shifter as long as it's all 10 speed. You can use any Sram 1:1 derailleur with any 1:1 shifter...even road. That's how I had my cross bike set-up. Also, if you replace the shift cable, replace the housing with it if it's more than a year or so old. The liner in the housing wears eventually and affects shift quality.

 

Hey all,

So I had some shifting issues, watched numerous Park videos on adjusting the rear derailleur and determined I messed mine up; I know it's not the hanger because when I took it off it lays flat (I'm still going to get a new one to have a back up and to compare).

Anyways, while educating myself, I realized my derailleur is a different model than the shifter; I have a SRAM x9 derailleur and x7 shifter. I figured this would be a good opportunity to replace them both. I found the SRAM GX online and it seems this would be an appropriate replacement--am I correct in this assumption?

I plan to get the long cage because based on what I read, my set up calls for this: cogs on rear cassette are 35 and 11 (subtracted = 24); two front cassettes are 36 and 22 (subtracted = 14), adding those together = 38 which seems to recommend a long cage. Am I right?

I also want to replace the shifter cable. Is there anything tricky I need to know about which one I buy? (pic below)

The main answers/input I'm seeking in this post are this: based on my current set up, are the replacement parts I'm looking at going to work for my bike? (see attached pictures)

Also, my front shifter is an x7, will this pose an issue if I change my other shifter to a gx?

I appreciate any tips/tricks/suggestions or anything you have learned from experience here

I would not upgrade any of those parts to different 10-speed SRAM, which is easily the worst generation of SRAM stuff. It does mostly work, but it's the worst of all the SRAM/Shimano 9-10-11-12 speed stuff.

95% of the time, poor shifting is cable or housing, or a bent hanger. The other 5% is a worn chain. It's very rarely actually in the shifter or derailleur. Get the hanger checked at a shop or buy the tool. You're not just checking the hanger, but the frame/hanger combination, and the hole in the hanger could be off-axis even if the hanger has no bend on the surface. The tool isn't cheap but it's something you'll use over and over again in a lifetime of wrenching on bikes: https://www.competitivecyclist.com/park-tool-dag-2.2-derailleur-hanger-alignment-gauge

The others are correct: that's brake cable, so you need shift cable instead. The setup that 90% of shops keep in stock is Shimano SP-41 housing, and Jagwire 1.1mm Slick Stainless cable. If you want to DIY, get a 10m piece of housing and have it in stock for a long time. Learn how to cut and file the ends so they are nice and square and clean - that's key to a good shift housing job!

https://www.worldwidecyclery.com/pr...yclery.com/products/shimano-sp41-derailleur-housing-4mm-x-33-black-w-o-end-caps

This is the cable I use, although it's out of stock most places:
https://www.worldwidecyclery.com/pr...products/jagwire-sport-derailleur-cable-slick-stainless-1-1x2300mm-sram-shimano

This stuff is a little nicer - not worth double the money IMO, although I do use it on very high-end builds just because $13 isn't much money on a $6-10k bike. But I'd totally just use this for now since it's available.
https://www.worldwidecyclery.com/pr...s/jagwire-pro-polished-slick-stainless-derailleur-cable-1-1x2300mm-sram-shimano

You also need these for the ends:
https://www.worldwidecyclery.com/products/shimano-brake-cable-tips-box-of-100

The first time you replace a cable and housing, it'll take you forever. But eventually you'll get really fast, and be able to swap it out in a few minutes, for less than $10 in housing and cable. Nothing improves shifting as much as fresh housing and cable - you won't believe how light and smooth the action is if it's been a couple years!

Finally - parts are real hard to get right now, but when you wear out that cassette and/or chainrings, just go 1x. You can get a 12-speed 1x cassette from SRAM or Shimano that will fit that wheel, and even the cheapest of the 11 and 12 speed groups are pretty awesome compared to any of the older stuff. Shimano SLX is a great deal, as is SRAM NX, as long as you substitute a GX shifter.

 

^ If it's 10 speed SRAM now that means the wheel will have a Shimano HG style driver.

Assuming it does, and you want to switch to 1x you can get an 11-51 11 speed Shimano Deore that will fit, but Shimano 12 speed cassettes need MicroSpline which means a new freehub body or hub. A SRAM 11-50x12, Sunrace 11-50/51x12 or various Chinese or fancy cassettes up to 11-52 will also fit your existing hub, but nothing starting with 9-10T - 11T minimum.