LTWOO ER9 & ERX - Electronic groepsets

[jonathanf2]

80 Design Store got back to me. They are officially selling both the new V3 ERX and ER9 groupsets. They haven't updated their profile description though. I did ask if the V3 ER9 has the new FD charging port. There doesn't seem to be much info about it, since all the influencers are pushing the ERX as the only option. From my experience with the eGR, I really do like the newer tactile shift buttons and the mono block alloy calipers have more bite than the older calipers. Though I would ask beforehand before ordering to specifically received the 2025 V3 groupset.

[jonathanf2]

I didn't think it was just my imagination that the Chinese electronic group sets had jumped on price the last week or so, damn.

What is the best value set right now for just the levers, disc brake calipers and cables plus derailleurs?

The cheapest spot to buy LTwoo groupsets is from the LTwoo official choice store. Just make note, The LTwoo official store won't warranty coverage the items. I did risk buying my Ltwoo eGR groupset from that choice store since it was under $300 USD, but I knew what I was getting into and the savings was worth it to me.

AliEx always have these price fluctuations. Best bet is to add an item on your wish list and monitor pricing. Also I always double check Super Deals on AliEx, because sometimes the same item from the same vendor will be cheaper if buying it as a Super Deal item.

I wouldn't be surprised if there were some prices drops between the spring and summer sales.

[toxin]

Feels to me like everything jumped in price tbh. Even shimano groups on ali jumped like 10%

[Avalius]

Two er9 sets here without issues, not the early models. Paid 344 dollar with coupons for the last one. Declared lower value and 36 euro import costs.

[Serge_K]

The cheapest spot to buy LTwoo groupsets is from the LTwoo official choice store.

AliEx always have these price fluctuations.

You're in the US, i'm in the EU. There are listings made for the US, others made for the EU (Airwolf cockpit is one very specific example i can point to). More generally, given that AliX prices are often 1/3 shipping costs, taxes & fees, what you see as best value is often going to be different for me, before AliX even starts playing price optimization shenanigans. As a rule of thumb, as i understand it, you pay less for stuff than we do on AliX.

Feels to me like everything jumped in price tbh. Even shimano groups on ali jumped like 10%

+1 on that. Given that last time I checked, China was in a deflationary environment, idk if it's 1. international shipping rates; 2. EU shipping rates; 3. the EU asking for more money / being more strict with customs / imports in general 4. algorithmic "optimisation" of Aliexpress, ie them pushing prices up like Amazon has been doing for years to see how much more people are willing to pay (and develop profound hatred for the platform in the process) until they throw in the towel and go live in the woods instead.

But generally, Alix feels more and more like a mine field. The exact same product can be had, without coupons, at such different prices over time, geographies & listings, it's really both frustrating and confusing.

Did you buy an ER9 groupset from 80 Design Store? If you had issues with your RD, they will send you a warranty replacement (just pay shipping fee). 

Unfortunately, the RDs that died are from the batch i got OEM when i built the bikes in the summer of 2023.

[neobiker]

As for the price increases, we might want to wait a bit, I expect it is because the anniversary sales is coming and store are jacking up the prices so that the discount seems bigger.

[user757]

For the 14500 batteries, must they be the 800mAh type, or can larger capacities (like 2500 mAh) be used? Anyone happen to know? As long as they're the same dimensions of course.

[amacal1]

For the 14500 batteries, must they be the 800mAh type, or can larger capacities (like 2500 mAh) be used? Anyone happen to know? As long as they're the same dimensions of course.

I would stick to something closer to the 800mAh. Not because the system can't handle different capacities (it can, as far as I know), but only because a correctly spec'd cell of that size can't differ in capacity THAT much. Something about the cell must be different, or they're wildly overstating the capacity. Neither bodes well for an indication of quality or compatibility. For reference, I have some good quality XTAR cells that are stated to be 800mAh and my eGR can go many hundreds of miles and thousands of shifts on a full charge. You don't need such wildly over-stated capacity for it to function well.

[mozart]

I would stick to something closer to the 800mAh. Not because the system can't handle different capacities (it can, as far as I know), but only because a correctly spec'd cell of that size can't differ in capacity THAT much. Something about the cell must be different, or they're wildly overstating the capacity. Neither bodes well for an indication of quality or compatibility. For reference, I have some good quality XTAR cells that are stated to be 800mAh and my eGR can go many hundreds of miles and thousands of shifts on a full charge. You don't need such wildly over-stated capacity for it to function well.

i use xtar too. no drain and i go many miles

[benquick]

Hi, I have been an owner of ER9 for more than a year now, but as the days are getting warmer this time of the year (for anyone living in the northern hemisphere, at least), I noticed that the brake lever action is changing very noticeably depending on the temperature. For example, I recently adjusted them to be responsive at around 5 ºC, but now that the temperatures are at ~15 ºC, the rear brake sticks significantly. I suppose this is not normal, and I am wondering whether anyone else has experienced something similar and if anyone has any ideas what the problem might be.

[mrpercussive]

Hi, I have been an owner of ER9 for more than a year now, but as the days are getting warmer this time of the year (for anyone living in the northern hemisphere, at least), I noticed that the brake lever action is changing very noticeably depending on the temperature. For example, I recently adjusted them to be responsive at around 5 ºC, but now that the temperatures are at ~15 ºC, the rear brake sticks significantly. I suppose this is not normal, and I am wondering whether anyone else has experienced something similar and if anyone has any ideas what the problem might be.

yea i've got the same thing too and don't know why but doesn't bother me much... I just adjust the lever reach adjuster to compensate

[mozart]

I have seen a difference in the travel of the lever due to heat. Indeed, in Greece we reach 45 degrees. If there are any sticking, it is better to lubricate the pistons and if necessary, change the cables and the oil.

[benquick]

Ok, thanks for quick replies. I have never heard of piston lubrication, but I will check it out!

[00Garza]

Hi, I have been an owner of ER9 for more than a year now, but as the days are getting warmer this time of the year (for anyone living in the northern hemisphere, at least), I noticed that the brake lever action is changing very noticeably depending on the temperature. For example, I recently adjusted them to be responsive at around 5 ºC, but now that the temperatures are at ~15 ºC, the rear brake sticks significantly. I suppose this is not normal, and I am wondering whether anyone else has experienced something similar and if anyone has any ideas what the problem might be.

This started happening on my GR9 brakes to the point that I had to DNF an event as the rear wheel could not fully turn without dragging on the brakes. Switched them out for GRX calipers.

[mozart]

Ok, thanks for quick replies. I have never heard of piston lubrication, but I will check it out!