Absolute Black Unveils 4-Cog 40-Tooth Oversized Cassette Adapter

not so sure about running everything down to the 28t in aluminum… A 40t or 42t may not get that much wear, but when you get down to 28t, I’m probably up in that quite a bit more.

If you use a cassette with 11-36 with a 28 tooth chainring (need to go with a one-piece chainring like the MRP Bling Ring to get one in that size) then your low ratio is 0.78 and your high ratio is 2.55. Compare that to the 0.8 and 2.46 you would get if you used this Absolute Black adaptor and 13 tooth lockring with a 32 tooth chainring. (Just like Ham-planet said – you lose range. Not much, but it still doesn’t make any sense).

I think the price is fairly reasonable given the machining, but it was pretty silly to bother with the 13 tooth lockring.

My comment should have been proofread too. wright —-> right.

Hi,
Marcin here from Ab.

Just to make it clear, you don’t have to take 11T out if you don’t want to. You can just take one of 15 or 17T like you would do with fitting just one 40/42T single cog.

Reason we did the 13T special lockring is the study which showed us that most people actually do not use 11T on the trail. This was a bit surprising but true.
All you can read here or on forums is the range and calculations. But in real world many, many riders just use 13T upwards:)
Of course there are people who use one bike to “do all”, racers, CX riders and so on who do need 11T. We found many enduro and trail riders don’t use it, so here is just another option you can use.

Regards lowering front ring tooth count. Sure this does a trick. But what if you are already on 32, 30 or 28T? Not much option to go more down at the front. Besides some people don’t like very small cog at the front from few reasons…

With the effort that went into this why no deduct the ring that has to be removed out of the low rang gears. That way the factory cassett could be ran unchanged.

So, all you guys tooling up for kludgey half cassettes know that when x9-1 is released you’re gonna eat that investment, right?

It’s also worth noting while you know-it-alls are arguing about changing chainrings instead, that the 2t jump in the cassette represents substantially more change than an equal change in chainring size.

To wit, James S: a 13x32t is nearly equal to an 11x28t, and a 32×28 is equal to a 40×32 combination. Perhaps before arguing that something is stupid, pick some numbers that prove that?

I don’t see any reason to not just GET X01, and I generally am a hater of all these adapters, as 1×11 is amazing, and this stuff results in ghetto-rigging derailleurs into massive B-Screw hacks and crappy shifting since the derailleurs aren’t designed for these >36t cogs…

That being said, I hate even more people on the internet arguing about gear-inches and gain ratios like no one else on the internet knows sheldonbrown.com/gears exists…

Get a hobby!

Will this work with the M980 XTR Cassettes?

James S – what to say. Your gear calculations are right… but not entirely related to reality.
what you are not aware of is that lots of people already use >32T up front. So once you have a small gear up front there is no way to get smaller.

Such riders in most cases want to have a gear up the rear to help them climb long uphills. And this is what we offer without weight penalty other solutions have. You also have to realize that people who do use sub 32T ring up front are not into high speeds on the flat… otherwise they would have bigger ring or 2X system .

If it does not make sense for you it is absolutely fine with us. We understand it. But there are thousands of other people in the world (not only in your particular location) where it absolutely make sense:) Sometimes you need to look at big picture. Like someone once wrote ” the eye has to travel”, otherwise you just look at stuff you know already know and don’t progress. What is not good for you it doesn’t mean it is not good for others.
just my few cents…
to finish this post i will just mention that you CAN take off 17T for eg and leave 11T. In such case you get 11-40 which is bigger than 11-36… we give people options. It’s up to each of you what you choose to take off from cassette. And this is a beauty of this system!

Amazing that the know nothing know it all crew can’t even fathom the concept of having multiple wheelsets constructed of varying components geared (nuk-nuk) for different applications.

I mean, why just swap your wheels out and call it done, when you can add swapping your chain ring along with them?

craigsj – XT has one of spiders with 19-21-24. So you cant use 6 original cogs the way you propose.
SLX would require braking apart riveted cluster by hack saw. This is not many people want to do or can do.
Only one left is sram 1050 which after conversion works heavier than XT and requires to buy new cassette if you have anything else than 1050.

So all in all we went with gearing people are used to already and modification is simple and not expensive as this part is the only needed one for conversion.
Jumps of 4 teeth are also much more predictable for the rider rather than 4-5-6 at the end (that’s our subjective opinion of course).
Our proposition 13-40 has jumps of: 2-2-2-2-3-4-4-4-4 that makes a very consistent change when you climb.

Absolute gets my vote just bc they shut all of your statements down with logical answers . People always think if it isn’t good for them it isn’t good at all .

I ran a 30t bling ring on my bike to get that lower 30-36 climbing gear . When I hit the descents I would spin out that 30t so I ended up swapping it out for a 32 . My cadence feels better now and I get a 1-2 mph bump ( not much bit it feels better ) the 40t makes more sense for a std rear mech (non xx1/xo1)

The main thing people forget is . If you want super low hearing with great range . STICK TO A 2x or even a 3x system . All the range you need !

@ craigsj . Like i wrote before this is something you want:) and that is fine. Saying “we” does not represent all customers combined. Like i also wrote before range does not matter here much. It’s rather not a product for people who race or have one bike to ride on the road/commute and trail. This product is for people who ride trail or enduro and they realize that they don’t utilize low end of cassette much, but need that extra gear to go steep climbs. Simple.

We have ridden Leonardi product and still decided to make 28-32-36-40. It’s more universal, one piece fits both Sram and shimano cassettes, it’s lighter, it’s cheaper and gears are more predictable as you are used to them already if you had 11-36 before. If everyone would want same thing from each segment of life there would not have been that many companies… right?

Btw,
We want to thank all for such a great response to the product and decided to extend giving free lockring to the first 400!! orders. Not much left so hurry up:)
At least you can check yourself how much fun is to ride with 13-40 for free. Remember, you can always put 11T back and take off 17T if you want to.

Have a nice Sunday all and go ride your bike.

Hi I recently upgraded my cassette with ab adapter…well I’m always having problems with my 28t of the adapter…when I put in power to climb, the chain keep skipping as if the chain won’t bite in to the cassette teeth..what could be the problem? Anyone can help me with this?
Much thanks! 🙂

Since the spacing on an 11 speed cassette is almost the same as a 10 speed cassette, could I not use the ab adapter with the remaining 11 to 24 cogs and make an 11 speed cassette?