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White Industries ENO Trials

Product code: 77


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White Industries ENO Trials


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- Very high quality freewheel designed specifically with trials riding in mind.
- Uses 1.375" x 24 tpi thread. Please note that this is slightly larger than standard 1.37" and we recommend at least 9 threads of contact between crank arm and freewheel to prevent the crank arm thread from being stripped.
- 72 engagements ensures very low take-up distance when pedalling, making the bike more responsive and lively.
- Fully sealed bearing system increases the smooth running life of the freewheel, making it vastly out-live its competitors.
- Deep 36t ratchet gives excellent strength and durability.
- Two sets of 3 pawls engage at a time to give an engagement every 5ļ of rotation.
- Enclosed pawl and spring pivots mean they cannot come out of place and foul the engagement of the mechanism.
- Individually active pawl springs (more accurate and reliable engagement).
- High quality case-hardened and then plated steel for ultimate durability and strength.
- All parts available separately, so this is a completely re-buildable freewheel. Should any part break, it can be fixed!
- Available in 18t, 20t and 22t.
- Weight: 199g (18t), 217.5g (20t), 221.2g (22t).

Overall Thickness: 18.50mm

Additional Information

All spare parts available separately and in stock, check out the Freewheel Spares category for info.

Can be used on the rear as long as you have a hub with standard 1.37" x 24 tpi thread and the freewheel's thickness will clear the dropout of your frame.

Always ensure the lockring is kept tight, failure to do so may limit chances of any warranty replacement being issued. If you need help with how to do this then just give us a call!

Freewheel sound level:

All freewheels tested under similar conditions. Please note that the sound level of a freewheel may change after bedding in. A 10 dB increase in sound level is approximately equivalent to double the perceived volume.



Hi, Just wondering if this freewheel will go on to the tensile urban cranks? And will I need a spacer?

Posted by Ryan on 12/12/2011

Reply from TartyBikes on 12/12/2011

Hi Ryan - The ENO should fit straight onto those cranks fine without the need for a spacer. Thanks, Mark

Peter Norman

I've been using the 18T version for 4 years now. If I went up to the 20T, what would be the biggest change I'd notice? Cheers, Peter

Posted by Peter Norman on 01/09/2013

Reply from TartyBikes on 02/09/2013

Hi Peter - your gear ratio would increase so it would feel harder to pedal, and one pedal rotation would cause you to travel further. Thanks, Flipp.


Hi guys, Will this work on a Trialtech forged? cheers.=)

Posted by Andy on 23/05/2014

Reply from TartyBikes on 27/05/2014

Hi Andy - thanks for your question. Numerous people have and do run these freewheels on Trialtech cranks, though doing so is not covered by warranty due to the thread sizes being slightly different. Thanks, Flipp.


It's actually a two part question: 1. Does this freewheel sound better (louder) than Try-all K-Libre 120.9? 2. Will it fit Echo SL 2013 cranks with Trialtech SL Titanium Halfring? Cheers

Posted by Denis on 12/08/2014

Reply from TartyBikes on 13/08/2014

Hi Dennis - thanks for your questions. 1) The ENO is slightly quieter than the K-Libre. We have volume ratings in the Additional Information tabs of each freewheel for comparison. 2) The freewheel will fit on the cranks, but please note that it has a slightly larger than standard thread and we recommend at least 9 threads of contact between crank arm and freewheel to prevent the crank arm thread from being stripped. Hope that helps. Thanks, Flipp.


Does this freewheel fit the hub on a bombtrack dash 2014?

Posted by niklas on 22/10/2014

Reply from TartyBikes on 23/10/2014

Hi Niklas - thanks for your question. We don't know much about those bikes so can't advise what else might work with your hub, but we know that none of the freewheels we sell will fit it. Thanks, Flipp.


Hello, Echo TR 170mm cranks, Echo TR Bashring (or alternatively a Trialtech half Bashring) does it fit (9 threads left on the crank)? Thanks, Nico.

Posted by Nico on 13/06/2015

Reply from TartyBikes on 15/06/2015

Hi Nico - thanks for your question. No, the Echo bashring is too thick and would not leave 9 threads on the cranks. The only bashring that would allow and ENO freewheel to be used safely with these cranks is the Trialtech Titanium bashring as it is thinner than alloy alternatives. Hope that helps. Thanks, Flipp.

Vladyslav Garkusha

Hi TB, wondering if its possible to use this freewheel with hashtagg isis and echo urban bashring

Posted by Vladyslav Garkusha on 25/06/2015

Reply from TartyBikes on 25/06/2015

Hi Vladyslav - thanks for your question. Yes, those components would all work together with no problems. Thanks, Flipp.


Hello, Would this fit on a meta360cc mod? Do you recommend any another brand? The stock FW is ACS Claws 18T so should I stick to 18t? Thanks!

Posted by Harold on 28/06/2015

Reply from TartyBikes on 29/06/2015

Hi Harold - thanks for your question. We're not too familiar with the cranks on those bikes so there is a chance there might not be the ideal amount of thread contact. It would be safer to go with an Echo SL or Jitie 108 freewheel which do not have this requirement and will definitely work. Yes, you should stick with an 18t freewheel or the gear ratio will feel very different and quite strange to ride! Hope that helps. Thanks, Flipp.

Fredrik Fjæran

I have an older Monty 219 with the 18T freewheel on the crank and the treads are aprox 34,8mm, that would be aprox 1,37 inch. I got the bike for free from a family member with bad freewheel, and i bought a new in Norway, but it broke. They sold me a Shimano sf-mx30, just crap for trials, it only got 2 grippers. But what am i locking for when i want a new one for my kid, 9 years old. what are the kodes that will fit the bike. regards Fredrik

Posted by Fredrik Fjæran on 07/07/2015

Reply from TartyBikes on 08/07/2015

Hi Frederik - thanks for your question. Any of the standard threaded freewheels we stock will fit. The Tensile Tor is a great budget option, or if you would like more engagements then the Jitsie or Echo freewheels are great options for this. To remove your existing freewheel you will need a freewheel tool (http://www.tartybikes.co.uk/tools/super_b_freewheel_remover/c31p2008.html) and a vice. We have a video that shows a good method here: http://www.tartybikes.co.uk/media/guides/maintenance_freewheel_and_sprocket_removal/m1.html Hope that helps! Thanks, Flipp.

John Hancock

Hey, is there a bashring available that will cover the 22t freewheel? Alot of them seem to say they are made for 18 maximum.

Posted by John Hancock on 01/05/2016

Reply from TartyBikes on 03/05/2016

Hi John - The Trialtech Sport Full Bashring (Quick find code: 011622) covers up to 23t so would do the job nicely. Thanks, Mark


Happy New Year! Hi, Iím just curious about your comments regarding the tpi size of the White Ind ENO trials freewheel 1.375? White Industries are currently describing the thread as 1.37 x 24 tpi. Is this down to variations in year of manufacturing or do you just have a superior measuring device? Iíve got a Phil Wood Classic Track Hub with (according to Phil) a 1.37 x 24 tpi thread. I need a really good quality sealed freewheel.... and I like green! ?.. Cheers James

Posted by James on 05/01/2018

Reply from TartyBikes on 08/01/2018

Hi James - We just measured our freewheels and they still measure in at 1.375", and they're a relatively new batch. As long as you have good thread contact on the hub the ENO should still work fine - we've used them ourselves on a variety of setups and the threads still hold up fine as long as there's plenty of engagement. Thanks, Mark

Christian Kluwe

Hey...can I use it on Echo TR cranks without any spacers or something else??? Thx Chris

Posted by Christian Kluwe on 06/07/2011

Reply from TartyBikes on 07/07/2011

Hi Christian - If you're not using a bashring, you'd need to use a spacer. If you are using a bashring you should be able to screw it straight on. Thanks, Mark

Austin Hawthorne

I'm wondering if the 22t freewheel will clear the chainstay on an Inspried Element frame mounted on Trialtech cranks with a Trialtech SL BB?

Posted by Austin Hawthorne on 20/09/2013

Reply from TartyBikes on 20/09/2013

Hi Austin - thanks for your question. We've never tried, or heard from anyone doing that, but there's no reason it shouldn't work. The Element bikes come with a 22t sprocket as standard, and that BB has a long axle so clearance in both dimensions shouldn't be an issue. It should fit fine. Thanks, Flipp.

Nikolay Chervotkin

Hello! Subtract-you VAT when purchasing from Russia?Данке шон.

Posted by Nikolay Chervotkin on 09/02/2015

Reply from TartyBikes on 10/02/2015

Hi Nikolay - thanks for your question. Yes, VAT will be removed. If you click the little flag picture at the very top left corner of the site and change your country to Russia you will see the adjusted prices on everything. Thanks, Flipp.

Steffen Bøjstrup

Hello! Does the White Industries ENO Trial, fit on the Monty 221 and would you recommend it? :)

Posted by Steffen Bøjstrup on 21/05/2015

Reply from TartyBikes on 26/05/2015

Hi Steffen - thanks for your question. Yes, this would fit on a 221 just fine and is a great choice in freewheel as if it does go wrong at any point all the parts are available as spares. Thanks, Flipp.


Write a review


Based on 2 customer ratings


very reliable !

Posted by Guy on 13/12/2010

It's long lasting freewheel! Very stable! And when you have it you can be calm.. now all you need is a good chain and you're safe from skipping


The BEST freewheel!!

Posted by Mickey on 26/04/2012

Some riders may not think much of this freewheel because it's old or doesn't have as many clicks of engagement. But let me tell you, I have had this freewheel for about 5-6 months and there has never been a glitch in all the time I have had it and if you are a rider that rides in all conditions like me you will love this amazing sealed barring freewheel. the only down side for me is only 72 clicks I would really like a 108 but because this freewheel has all those other amazing features the 72 is worth it. So if you are looking for a good freewheel GET THIS ONE!!!

Reply from TartyBikes on 26/04/2012

Hi Mickey - I'm glad you like the freewheel so much! Thanks for the detailed review.

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