LTWOO ER9 & ERX - Electronic groepsets

[kbernstein]

I seem to have read that the maximum rear sprocket for this group is 32 teeth, but some sellers on Ali are packaging it with an 11-34 cassette. Does anyone have any more information or practical experience with this?

I seem to recall from one of the first videos about RX hydro that it was officially max 32T but that they had people on 36T no problem. It's probably the exact same cage for eRX.
It has to be true, 32T is just really bad in 2023. i'm confident it would take 36, but how much more can it take?

[erallen30]

The LTWOO er9 is now available on aliexpress. Its price is listed at $565 without the box. Not too bad. Curious to see the weight.

[raisinberry777]

That price point means things start to get more interesting - particularly when you consider that you could probably get cranks / cassette / chain / rotors for around $200 extra. I look forward to seeing some people get them in person.

[erallen30]

That price point means things start to get more interesting - particularly when you consider that you could probably get cranks / cassette / chain / rotors for around $200 extra. I look forward to seeing some people get them in person.

It will probably be quite a bit more than $200 to get the rest of the things you mentioned, unless you're going ultra budget. $400 seems more likely for quality parts. Still, it means that a quality groupset can be had for under $1000 if LTWOO turns out to be reliable. Time will tell.

[erallen30]

I'm still not a buyer of LTWOO er products without remote shifters, though.

[erallen30]

The LTWOO er9 is now available on aliexpress. Its price is listed at $565 without the box. Not too bad. Curious to see the weight.

Get this thing at $499 with free shipping and they'll sell like hotcakes.

[raisinberry777]

It will probably be quite a bit more than $200 to get the rest of the things you mentioned, unless you're going ultra budget. $400 seems more likely for quality parts. Still, it means that a quality groupset can be had for under $1000 if LTWOO turns out to be reliable. Time will tell.

I just made an AliExpress cart of:
- Senicx PR2 DUB crank (to avoid 24mm alloy axles)
- Shimano M6100 chain
- ZTTO 12S 11-34 cassette
- 2x IIIPro centrelock rotors 160mm

And that came to 220 AUD (150 USD). I accept that there are likely higher quality options out there, but I would think that this presents a decent level of quality for Chinese products. You could even change to a Shimano 105 cassette as well and still be within budget.

[jcr]

The LTWOO er9 is now available on aliexpress. Its price is listed at $565 without the box. Not too bad. Curious to see the weight.

eR9 without box or battery is $514 https://www.aliexpress.com/item/1005005666489670.html

[kbernstein]

eR9 without box or battery is $514 https://www.aliexpress.com/item/1005005666489670.html

How? $617 with  $64 shipping for me

[pmark]

How? $617 with  $64 shipping for me

It shows up as £415 inc shipping for me, which is a very tempting price.  As a comparison, 105 R7020 full groupset is £440 in the UK. 

I would double check which currency/location you have selected.

[TidyDinosaur]

How? $617 with  $64 shipping for me

The 514 is excl. Vat and tax. So it will get quite a bit more expensive in the EU indeed...

[jonathanf2]

The only difference between the ER9 and ERX is basically the carbon shifters and a carbon cage? If that's the case, you can pocket the difference and find other areas to cut weight on the bike. Also does anyone know if you can swap the pulley cage for an OSPW on the ERX rear derailleur?

[strayan_rice_farmer]

I DM'd the Aliexpress store rep and they weighed two sets for me.
1510g for eR9
1500g for eRX

note he has all the packaging and cables on the scale + caveats about scale calibration.

Interestingly this would mean that the price difference between eR9 and eRX is essentially a CarbonFiber tax.

[kbernstein]

Absolutely no way the difference is only 10 grams.  Wasn't there 90 grams of difference between RX and R9 (non electronic)?
Carbon tax is a thing but if there is so little difference I don't see anyone informed buying ERX again. The seller must have forgotten the battery or something
Somebody had a concern for ER9 being software locked to 11 speed, was it confirmed it can do 11 and 12 speed?
Also, why is this thread in the Road bike section when the R9/RX thread is in the components section?

[strayan_rice_farmer]

i think i posted on this thread before the weight difference. Marketing materials from L-twoo attached.
Er9 is not locked to 11s.

55g difference between the two... not much in it.
Looks like the exact same components - material change for levers and cage.