Exclusive: Take Your 11-36 Cassette to the Next Level with OneUp Components’ 42t Sprocket

OneUp-Components-42T-Sprocket-green-Specialized-2013-Stumpjumper-FSR-Comp-EVO 29- cassette- Looking for the wide range performance of XX1 but can’t afford the price tag? At OneUp components they believe in working less and riding more which is why they came up with a solution to that very problem. As their debut product, OneUp is essentially giving your cassette an extra life with their 42t replacement sprocket. Designed to fit on your standard 10 speed mountain bike cassette, the sprocket offers the super low range of the 42t cassette without having to make huge changes to your drivetrain. Intrigued? Shift past for more! OneUp-Components-42T-Sprocket-green-front Thanks to the advent of high quality non-drop chainrings like Wolf Tooth Components, drivetrain experimentation is at an all time high (at least for me). While it is possible to go 1×10 with a standard Shimano or SRAM 11×36 cassette, there are definitely times that a wider range would be welcomed – which is why the XX1 cassette offers 10-42t. The OneUp components sprocket won’t get you that 10t, but it will bump up the low range to a tractor pulling 42t. Built to use a standard 9/10 freehub body, the 7075-T6 sprocket includes 12 shift ramps CNC machined into the surface that are optimized for an 11-36 cassette. Once adapted, the net weight increase for the cassette is 51g and offers a 17% range improvement in the gearing. OneUp-Components-42T-Sprocket-Instruction-Sheet-01_grande Just how do you go about adding a 42t sprocket to your cassette? Well, essentially you are removing the 17t cog and replacing it with the 42t. There is an included spacer that must be positioned differently if you’re running SRAM or Shimano, but the directions make it plenty clear. In the case of a Shimano M771 11-36 cassette, this takes the gearing from 11-13-15-17-19-21-24-28-32-36 to 11-13-15-19-21-24-28-32-36-42. Will you miss that  17t? It depends on the bike, your gearing, cadence, etc. – but we hope to find out soon. OneUp’s 42t is compatible with most 10 speed medium or long cage derailleurs, as long as they offer enough chainwrap capacity for your selected gearing (largest rear sprocket – smallest rear sprocket) + (largest front chainring – smallest front chain ring). It should go without saying, but depending on your chain length you may need to add a link due to the bigger gear. As for the cassette, OneUp is compatible with the folloing 10 speed models: Shimano   

  • XT (CS-M771-10 11-36)
  • XTR (M980 11-36)

Sram

  • X5 (PG-1030 11-36)
  • X7 (PG-1050 11-36)
  • X9 (PG-1070 11-36)

OneUp points out that the Shimano Deore, SLX and SRAM 1080, 1090, and 1099 cassettes are currently not compatible with the 42t adapter sprocket. Compared to something like the General Lee 25-40T cassette adapter, the OneUp sprocket fits both SRAM and Shimano cassettes with the same part, and retains more of the original steel cassette gearing. Like the XX1 cassette, only the largest, 42t cog is aluminum which helps to maintain drivetrain durability. Also, due to the nature of the OneUp sprocket’s design since the lowest cogs rarely are worn out, you can replace the rest of the cassette while keeping the OneUp for future use. OneUp-Components-42T-Sprocket-green-Specialized-2013-Stumpjumper-FSR-Comp-EVO 29- drievetrain-

The OneUp 42t sprocket is available in black or green with the MSRP set at $100. The first sprockets are shipping out in January and will ship anywhere in the world for free. Check out OneUp on the web for additional product info and to place your order.

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drkrvr
drkrvr
9 years ago

Overpriced. General Lee, Recon, brand-whatever…, as well.
Full (10 cogs) casette – 10sp / 11-40t / 84.- EUR / 115.- USD
This is overpriced already as well, but this is a full casette, not just 1 cog:
http://www.werk.cz/html/e-shop/index.htm

pt81
pt81
9 years ago

Take off the 15 and 17 cogs and put in a16 ,the jump up a down will be less noticeable.

John K.
John K.
9 years ago

You must be joking! If you remove the 17t cog, the gap between cogs isn’t proportional. With a 11-13-15-19-21-24-28-32-36-42 cassette de gaps will be 2-2-4-2-3-4-4-4-6. You have 4 teeth gap between 15-19, and 2 teeth between 19-21.

If you want a good proportional cassette, you have to remove 17t and 19t cog, and replace it with 18t a 42t cog. The new gearing will be: 11-13-15-18-21-24-28-32-36-42 with proporcional gaps: 2-2-3-3-3-4-4-4-6.

I think Shimano and Sram could make a 11-42 10v. cassette with 11-13-15-18-21-24-28-32-36-42 gearing.

Antipodean G
9 years ago

Very cool. I just found a Christmas present for myself!

Drakche
Drakche
9 years ago

Awesome idea, but 100$ for a single cog.
whose manufacturing costs probably 15$…
This is taking it too far. I really dislike the trend of manufacturers trying to cash in on some stupid hype.

Kristina
9 years ago

Nice color. But the gearing is terrible. The jump from 15t to 19t cog is more than 26%! We sell our rebuilt 10speed cassette 11-40t with gearing 11-13-15-17-20-23-26-30-34-40t. Complete cassette for less than 100Eur.

Johan
9 years ago

Could one remove a different gear , as 17 is my most used gear.

oratioh
oratioh
9 years ago

Agreed this is an awesome product, and more cost effective than the General Lee cassette. But $100 for a simple CNC’ed single cog is BS, in fact cog for cog this is more than the infamous XX1 cassette. Come on guys

Lawman
Lawman
9 years ago

You can get single shimano xt 16t cogs as well to tighten the mid-range ratios a little bit, so you end up with 11-13-16-19-21-24-28-32-36-42. Would work on either the xt or xtr cassettes and they cost like a £5

uzurpator
uzurpator
9 years ago

Incorrectly machined inner spline of that cog. It will be incompatible with ~99% of hubs out there.

Rich
Rich
9 years ago

This is genius. And Lawman’s 16t idea sprocket makes it even better.

Yuki
Yuki
9 years ago

That looks nice, but General Lee’s wide cassette is $140. It’s too expencive for only 1 cog.

momo
momo
9 years ago

Well, I could not justify the price of General Lee. And now… 100$ for a cog!? Please Shimano, bring us a native 11-42 cassette so we can get rid of this stuff…

Eddie
Eddie
9 years ago

Pretty much the same product made out of stainless has been available for months for $35 on ebay. A lesson in the power of marketing I’d say.

57-180
57-180
9 years ago

So old it’s new again. Brought me right back to the 90’s and the Ritchey 2×9 drivetrain. Solid idea. I’m always amazed at how many things show back up that Ritchey dabbled with in the past!

Matt
Matt
9 years ago

I would strongly encourage anyone complaining about the price to design, produce, package, and market something similar for less than $100. You clearly know better than these guys how to do all of this so very much cheaper, and I’m sure your expertise will be very much appreciated by those looking to save a few dollars.

mike
mike
9 years ago

yes somebody went unto business for profit. how shocking. bunch of whiners if you cant afford it then maybe you should consider a different hobby but last i checked there are plenty of affordable parts. and eddie provide this link you speak of because i cannot find it.

kibndman
9 years ago

$100. sure beats $1300. for an XX-1 groupo (sorry SRAM, I love you)

Heff27ml
Heff27ml
9 years ago

Do you have a link for that Eddie?

Sevo
Sevo
9 years ago

Price is fair. Few things to consider here:
-Small Company=Small Batched.
-In CNC, lower quantities=higher prices
-Compare that a Wolftooth 44t chainring is $84
-Compare: Rotor ss Q Ring is $140 for
-Note: Cutting the splines isn’t as easy/cheap as you think
-Nor is cutting in shift ramps

Also let’s not forget that currently a 10-42 cassette will cost you $340, and you need to then get a special free hub body (if your hub has that option, if not you’ll need new wheels, if it does that’s typically $90+). Oh, and that is only available in 11 speed. Which means you’ll also need a new chain, shifter, and rear der minimum. Plus a Woolftooth chaining or similar starting at $40-$50.

$100 for a ring that lows me to keep everything I have already except my 17t cog?? Sold. Sign me up. But I want mine in gold to remind me it saved me money.

Kark
Kark
9 years ago

There’s some good comments here. Nice!

The stainless unit via ebay looks like it would shift like garbage tho. No ramps or pins to help with shifting and the tooth profile looks quite different than any I’ve seen. It’s not comparable to the involute patterns of non-shifting ansi sprockets and it’s not comparable to the more open pattern for cassetts and chainrings so where did it come from?

Thanks Kristina and John for good points r/e the gear spacing and alternate solutions. The Werke site unfortunately is a bitch to decipher tho.

I like the idea of the oneup solution but I think would prefer to go to a 40t vs 42t

In general tho adding a few teeth to the back would allow me to go larger with a single chainring for more top end which could be nice.

OneUp Components
9 years ago

Thanks for looking!

The launch special is $85 including free international shipping by e-mailing discount1@oneupcomponents.com

Regarding the 17T removal. We think this is a great compromise to achieve the extra range of a 42T and the added durability/shift performance of keeping the steel 28,32,36.

Tim
Tim
9 years ago

These guys are smart- they’ve priced the product high enough to make themselves money (people do business in order to make money), and low enough to save you hundreds of dollars compared to getting the “real” SRAM XX1 drivertrain.
The steel one on eBay is a cheap and probably effective solution, but not as light as this one.

24s
24s
9 years ago

Will do the same job than my actual 42 rings, but nicer ! I took of the 15 and 17 cogs and replaced it with à 16.

i ordered one Oneup ! I hope you will ship them early january !

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JW
JW
9 years ago

http://www.gear-calculator.com/#KB=24,38&RZ=11,13,15,17,19,21,24,28,32,36&GR=DERS&KB2=32&RZ2=11,13,15,15,19,21,24,28,32,36,42&GT2=DERS&UF2=2120&TF=92&UF=2120&SL=2

I’m in doubt. My bike is a XTR & XT mix. I won’t go to Sram, but I feel 1×10 (or 1×11) is the way to go for me. The Lee adapters didn’t convince me because in my experience experimental drivetrain combinations never shift as good as the original parts working together + less durability, …

100$ is a lot of money knowing you get added range but loose some good shifting performance. And who knows what Shimano will bring out in 2014. Better save the 100$ untill it is clear how Shimano will respond to XX1 ??

MG
MG
9 years ago

Good job…. I will definitely be trying one of these out.

Kurt
Kurt
9 years ago

I’m running a similar setup a friend made me as a hobby piece. Simply removing the 17T cog will give you a weird drop. I took off both my 17 and 15t cogs and replaced it with a 16t cog from an old 9 speed cassette I took off. Instead of going 19-15-13 now, I go 19-16-13.

FastWayne
FastWayne
9 years ago

What you mommies didn’t tuck you in last night? All the hate. if you don’t like it don’t buy it.

NCMTB
NCMTB
9 years ago
John
John
9 years ago

Very good job 🙂

Like this:

http://www.ruedasalacarta.blogspot.com.es/2013/08/xx1-y-bas-ss1.html

This is manufactured in Spain and you can change the chainring 42.

Alex
Alex
9 years ago

I’m sorry can we just lose the 11t cog and put in the 42? I can’t remember the last time I used mine.
Ultimately aren’t we free to choose which cog we give up?

Ajax
Ajax
9 years ago

$100?!

Not for the cassette.

For one single cog.

Rich
Rich
9 years ago

@alex, you could lose the 11t but you would need to find a 12t cog from a 12-something cassette. You need one with the serated surface for the cassette lock ring.

John
John
9 years ago

Yess!

Is very expensive!!!!

Ray
Ray
9 years ago

I like the idea. I just don’t like not being able to use a SRAM PG1080 cassette or higher.

Scott
Scott
9 years ago

42T !!, I remember when my lowest gear was a 32-28, because we all removed our 22T rings.

RickyB
RickyB
9 years ago

I’ve been running this 41 tooth (from eBay) all summer, works pretty well, and with SRAM XO drivetrain. I ditched the 11 tooth instead of the 17, that’s my least used gear. Up front I have a Race Face 32 tooth (pre narrow-wide) and it’s my “poor man XX1”, minus 1.

http://m.ebay.com/itm/261323976497?nav=WATCHING&sbk=1

Brendan
Brendan
9 years ago

I don’t think most current 10 speed rear derailleurs can take a 42 tooth gear.

Matt
9 years ago

Cost aside it’s an option to go 1X10 on bigger rides and options are what we all like, right? Good job OneUp!

Ian
Ian
9 years ago

I think Shimano is crazy not to engineer a response to XX1, but… in Shimano land, front derailleurs are king and they only see 1X systems as a solution for DH bikes. I hope I’m wrong but I don’t think we’ll ever see a real trail worthy 1X system from Shimano, more than likely we’ll have internally geared XTRi2 but I bet that’s another 8 years away at least and will only be available to the ultra rich. All of these aftermarket solutions are cool, but on paper, they don’t seem super stable to me. If a rear derailleur wasn’t engineered to ever think about a 42t cog… I understand chain capacity so spare me on those dynamics.

however, for me, $85 would be worth it to ditch the FD and maintain a reasonable gear range – I hate to admit it, but seeing someone like RaceFace produce a more affordable option is probably the next step. They seem to own that 1X market now with that NW chain ring. That silly thing is the best $50 I’ve ever spent on a bike and I would be hard pressed to give the little companies any of my hard earned money now. These smaller companies have to realize what they’re up against, it’s a lot like opening a bike shop in a saturated market only crazier. I wish them well, if it gets good reviews when it’s on the trails for a bit, I will buy one.

James
James
9 years ago

This looks like an incredibly bad idea without a carrier to spread the load out. The top 3 gears on any modern cassette are on a common carrier to spread out the load so that the gear doesn’t dig into, score, and eventually jam/slip on the cassette body. Even with a steel cassette body I wouldn’t use this, as the load will be incredible with a 42t ring. There are already much better 1×10 stop-gap products avail.

Local Dutchman
Local Dutchman
9 years ago

I wonder what an aluminium freehub body looks like after a steep climb on the 42T. How wide is the base?

OneUp Components
9 years ago

Thanks for all comments. Please checkout our compatibility and installation website info for answers to a lot for these questions.

Specifically regarding the freehub load comments we have close to 4mm of spline engagement. This is very similar to the engagement between XX1 and an XD driver.

Simon
Simon
9 years ago

I actually think this is a pretty elegant solution. I’d expect it to last longer than a couple of cassettes so the cost of ownership over time will be lower than buying full cassettes

Thumper McDonut
Thumper McDonut
9 years ago

I love all the armchair engineers claiming to know how much these cost to make.

Matt
Matt
9 years ago

To those saying drop the 11T and use a 13T smallest cog:
42/13 = 3.23 (323% range)
This is a smaller range than your existing 36/11 (327%).
It would be easier and cheaper to just fit a smaller chainring…

The point of this product is to give you a 42/11 = 381% gear range

Jason
Jason
9 years ago

I love it, great idea…for a 1×10 set up this is a game changer. As for the cost!?!? 100 Bucks, (85 with the promo), that’s not bad, a lot of people I know spend 85 dollars on tires….that’s a bit ludicrous don’t ya think? So go out to your bike and add up how much you have in Rubber on your hoops, then compare it to a sedan tire, or even a motorcycle tire, then we cant talk expensive.

But first I’m commenting directly to OneUp, as I have a question. Will you guys be offering in the kit a replacement for the 11T instead of the 17T, or will you supply the info needed and part numbers to do that swap instead of the 17, IMO this would be great for marketing, as it allows the customer to chose what jumps he or she would like to make, with a result in making your product even more appealing.

My reasoning is this;
Yes I see on paper that you will have less “Range” doing it this way. However, I’ve yet to ride my bikes on paper, but I hear it’s super fun. I unfortunately ride my bikes on dirt, up hills, in the mud, over rocks, and downed trees and all that mountain biking type stuff. So with that said, I rarely ever use my 11T ring, save for traveling or storing the bike to take some tension off the derailleur spring. So I would certainly be game to replace a cog I don’t use, for one that I certainly will with a 1×10 set up, (your 42T).

Also I gave some thought to the speculation of the ring digging into the free hub body. Correct me if I am wrong, which I probably am, but while in a granny gear, ie the 42T isn’t it quite easier to pedal, so essentially you are putting less torgue into the drive train at this taller gearing? Thus lessening the stress on the drive train. Whereas if you are in smaller gear it takes more physical force to move the pedals thus that force is transfered through the drive? Further thought brought me to an idea that this 42T will not be used that often, so then even lowering the risk for free hub injury if you will. Now that’s just arm chair hearkening back to High School Physics there, nothing concrete, but just a thought.

To OneUp, thanks in advance, I hope you can respond to my question.
To interweb engineers and number cruncher’s….keep riding, it’ll make ya happier.

OneUp Components
9 years ago

@Jason.

Always glad to respond.

First regarding the 17T. We chose the 17T for a few reasons. First, it exists and is removable on all compatible cassettes. Secondly, removing it results in the lowest resultant percentage jump between the adjacent gears. Some cassettes, like the 1030 for instance, have other free gears that could be removed instead, to tune it differently.

Regarding the 11T. We do not plan on creating this simply because we are looking to add range.

Regarding the freehub load comments. We have close to 4mm of spline engagement. This is very similar to the engagement between XX1 and an XD driver.

Thanks for taking the time to comment.