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How much $$ to update from a 2x9 to a 1x11?

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How much $$ to update from a 2x9 to a 1x11?

Old 06-09-20, 10:43 AM
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NYNJrider
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How much $$ to update from a 2x9 to a 1x11?

bought a NOS 2018 Kona Rove DL and i'd really like a 1x11 as opposed to the 2x9 that it came with.

that said, i wouldn't be able to do the work myself so i imagine it'd be quite costly to make this update, correct?

has anyone done similar care to weigh in?

thx.
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Old 06-09-20, 10:46 AM
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Check to see of the wheels will accept n 11 speed cassette. Else it's a moot point on that wheel, unless you can get a local shop to swap to an 11spd compatible hub.

Edit: Then you need somebodies 1X crank with what is known as a “narrow/wide” chainring, plus bottom bracket. Then an 11 spd. rear shifter, 11 spd. cassette and chain.

Last edited by Steve B.; 06-09-20 at 11:24 AM.
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Old 06-09-20, 03:53 PM
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Assuming you are paying full retail, given the current bicycling market, I'd say about $600 for the shifters, derailer, cassette, chain and crankset plus $100+ in labour
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Old 06-09-20, 04:32 PM
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A few years ago I swapped a 105 2x10sp setup for a SRAM Force 1x11 on an old CX bike. For that project, I needed:
  • 11sp shifters/brake levers (you can use 2x11 shifters, but the 1x versions remove the shifting components from the left side, so I guess they save a little weight? They're cheaper)
  • 11sp 1x rear derailleur
  • 11sp cassette
  • 11sp chain
  • 110bcd narrow/wide chain ring
  • single chain ring bolts (they're shorter than the 2x bolts)
  • new brake and shifter cables/housing
  • New bar tape (you could probably reuse old, but this is a good time to replace)
I didn't replace my crank set (FSA) or bottom bracket (BB30) for this. I'm not sure why it would be needed. I just removed the two chain rings that came on the bike, bolted on the new chain ring (I used a 42T from Wolftooth) directly onto my crank spider. I don't think I even needed to pull the crank off. All said, it was a pretty easy project and I'm super happy with the end result. Maybe took me 2 or 3 evenings and a half dozen beers to complete.

EDIT: The only snag I ran into was learning that chain ring bolts come in different lengths. The ones I bought were too long (for a double chain ring) and so I had to buy shorter ones designed for a single chain ring.

Last edited by msu2001la; 06-09-20 at 04:36 PM.
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Old 06-09-20, 04:33 PM
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Cheaper and easier is 1x10. Won’t need new shifters or wheels, would just need a 9 Mtb speed derailleur. I run 8/9 speed Deore with 10 speed 105 upfront.
Other derailleur work, but if they don’t have a barrel adjuster you need to add one to the housing near the stem. You could add a derailleur extender to get up to 40t if derailleur capacity is lower.
There are 9 speed long cage, Shimano Altus for example can go up to 40t.
Or get a 10 speed road and add a roadlink, should be able to do 40t in back with that.
Narrow wide is advisable but not essential. I don’t use one on my cx 1x10 setup and have no issues with dropped chains riding single track. Just make sure the chain is the right length. Narrow wide with a clutch derailleur is overkill but nice, my mtb is setup that way. Clutch on its own is supposed to remove the need for narrow wide.
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Old 06-09-20, 06:05 PM
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+1 on 1x10 being easier. STI is expensive.

If you want clutch, you can use a wolf tooth tanpan. Clutch with Shimano starts at 10sp, and 11sp MTB derailleurs work with 10sp cassettes and shifters.

If you don't need clutch, a 9 sp MTB derailleur will wrap larger cogs.
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Old 06-09-20, 07:49 PM
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You don't need a new wheel!!!!!!!!!!!!!!!!!! You just need to run a shimano 11-34 or wider range 11 speed cassette. The 11-32 and narrower 11 speed cassettes are the ones that require a wider freehub body.
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Old 06-09-20, 08:08 PM
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Originally Posted by DorkDisk View Post
+1 on 1x10 being easier. STI is expensive.

If you want clutch, you can use a wolf tooth tanpan. Clutch with Shimano starts at 10sp, and 11sp MTB derailleurs work with 10sp cassettes and shifters.

If you don't need clutch, a 9 sp MTB derailleur will wrap larger cogs.
Forgot about the Tanpan. Good option.
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Old 06-10-20, 11:47 AM
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1x11 on a budget with hydro upgrade.

Shimano RS505 shifters with flat mount calipers - $170
Shimano GRX812 rear derailleur - $110
Shimano GRX-RX600 crank - $140
Shimano Deore XT 11-42 cassette - $60
Total - $480

Now that is assuming you are paying full retail for the GRX bits which most places will have a 15-20% coupon so it can be cheaper.

2x9 is still HG so you can use an 11sp MTB cassette no problem.

Last edited by gus6464; 06-10-20 at 11:52 AM.
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Old 06-10-20, 02:16 PM
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Originally Posted by gus6464 View Post
1x11 on a budget with hydro upgrade.

Shimano RS505 shifters with flat mount calipers - $170
Shimano GRX812 rear derailleur - $110
Shimano GRX-RX600 crank - $140
Shimano Deore XT 11-42 cassette - $60
Total - $480

Now that is assuming you are paying full retail for the GRX bits which most places will have a 15-20% coupon so it can be cheaper.

2x9 is still HG so you can use an 11sp MTB cassette no problem.
It looks like Wolftooth makes a single ring that is compatible with the OP's existing Sora crank. It mounts to the big ring section of the crank, but has an inward offset to be centered.
$80 MSRP vs $140 for a GRX-RX600 crank.
https://www.wolftoothcomponents.com/...shimano-cranks
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