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Monty Snail Cam Tensioners

Product code: 2092

From £5.00 to £5.83

On order

Monty Snail Cam Tensioners

Black, no bolts
Black, with M6 bolts
Gold, with M6 bolts
Red, with M6 bolts

Sold out

- High quality snail cams from the original BikeTrials brand Monty.
- Designed to fit all modern mod bikes with 10mm axles.
- CNC Machined from top quality plate aluminium alloy, then anodised red, gold or black with a stamped Monty logo.
- Allows easy set-up up chain tension by simply turning the tensioner: the cam system gradually pushes your rear wheel backwards until the desired chain tension has been gained.
- 23 shallow teeth around the outer edge ensure that they stay exactly where you put them!
- Much lighter and less easy to damage than standard chain tugs.
- With bolt variation includes two small bolts to fit into your frame which allow these chain tensioners to be used. Please note that these bolts are M6 size, and most frames use an M5 snail cam bolt thread. Please contact us if you are unsure how to fit the snail cam bolts.
- Weight: Only 11g per pair including bolts.

Additional Information

Minimum adjustment distance (from centre of axle to nearest outer edge): 9.5mm
Maximum adjustment distance (from centre of the axle to furthest outer edge): 20.0mm
Range of adjustment: 11.5mm
Number of teeth: 23
Adjustment per tooth: 0.5mm



Would these fit the Onza Blade 2009?

Posted by jack on 03/03/2011

Reply from TartyBikes on 04/03/2011

Hi Jack - If you've got a Blade '09 frame, then the best bet would probably be to get some Onza Integrated Tensioners. Your frame has a threaded mount in the dropout to use them, and they're a pretty good system, so I'd recommend them! Thanks, Mark


hello, i recently bought these snail cams and they seemed yo be to small. I didnt know it one was larger to fit the drive side or what but they seemed lack in size. Im almost positive my axle is 10mm. any advice?

Posted by Jordi on 24/12/2011

Reply from TartyBikes on 28/12/2011

Hello - I'm not too sure what you mean, sorry! The axle drilling for these cams is 10mm, as it is for most of our snail cams. The outer diameter varies from snail cam to snail cam - the snail cam's range of adjustment is listed in the Additional Information. Thanks, Mark

gail johnston

will these fit an onza bird 2011?

Posted by gail johnston on 14/10/2012

Reply from TartyBikes on 15/10/2012

Hello - Unfortunately the Bird isn't drilled to accept snail cam bolts, so it's not possible to use snail cams either. You can only really use chain tugs for this bike. Thanks, Mark


Is there a straightforward way to modify bolts or frame so they fit a frame with m5 threaded holes? Thanks

Posted by Kasey on 07/10/2013

Reply from TartyBikes on 08/10/2013

Hi Kasey - there isn't. The best thing to do would be to just use some standard M5 bolts! Thanks, Flipp.


Would these fit my Monty 221ti frame ?

Posted by andrew on 02/03/2014

Reply from TartyBikes on 03/03/2014

Hi Andrew - yes, these would fit your frame just fine. Thanks, Flipp.


Hi, I was wondering if these will fit a Monty 219 kamel from 2010? If not, are there any else chain tensioners that will fit?

Posted by Andreas on 06/08/2015

Reply from TartyBikes on 07/08/2015

Hi Andreas - thanks for your question. Yes, these should fit your bike just fine. Thanks, Flipp.


Hello , i have a koxx hydroxx frame, was wondering if these would fit ? Cheers

Posted by Andrew on 22/10/2017

Reply from TartyBikes on 23/10/2017

Hi Andrew - These should fit the Hydroxx fine. You'd need to continue to use your standard snail cam bolts though rather than switching them out to the ones supplied with the cams. Thanks, Mark

Daniel Ralph

I recently bought some of these, And it says "Designed to fit all modern mod bikes with 10mm axles" But they're too small for my Adamant frame. Would it be possible to send them back and then exchange them some different ones? Is there any that are a bigger size than these?

Posted by Daniel Ralph on 02/12/2010

Reply from TartyBikes on 02/12/2010

Hello - The "mod bikes with 10mm axles" refers to your axle diameter, rather than anything to do with your frame. To double check how much range of adjustment the snail cams have, you can refer to the 'Additional Information' on their products pages, where most have the dimensions listed. Cams like the V!Z model would probably fit better, as they have a larger range of adjustment. If your current snail cams fall within our returns policy (available in the 'Support' section) then you're more than welcome to send them back. Thanks, Mark

Carl Perkins

Heya, will these fit a 2010 Onza Zoot?

Posted by Carl Perkins on 04/02/2011

Reply from TartyBikes on 07/02/2011

Hi Carl - You'd need to modify the frame by drilling and tapping a hole for the snail cam bolt in order to use these cams. There isn't much material available to do this, so we generally recommend sticking with chain tugs instead. Thanks, Mark

Luca Corletto

Does this fit on a 219 monty magura. i hope so, but i wanna be sure! thanks LC

Posted by Luca Corletto on 27/04/2011

Reply from TartyBikes on 28/04/2011

Yes, they will fit. Thanks, Adam

Daniel Soulsby

Hi would this fit on my onza ice 2 frame ( i know the frame has integrated chain tensioners its just they don't seem to work for me)

Posted by Daniel Soulsby on 25/06/2013

Reply from TartyBikes on 25/06/2013

Hi Daniel - thanks for your question. Unfortunately they wouldn't. That frame's spacing isn't wide enough to accommodate snail cams as they have their own tensioning method. There is also no snail cam bolt holes, so there would be nothing for the cams to butt up against. Thanks, Flipp.

Simon Smith

would these fit and work on a onza ska and if they did wud they be better than chain tugs

Posted by Simon Smith on 05/01/2014

Reply from TartyBikes on 06/01/2014

Hi Simon - these will not fit a Ska, unfortunately. The Ska does not have snail-cam mounting bolt holes and so they will have nothing to press against. We stock the Gusset Kojak chain tugs (http://www.tartybikes.co.uk/chain_tugs/gusset_kojak_chain_tugs_pair/c8p170.html) that are the same price as these snail cams. Hope that helps! Thanks, Flipp.

edwin vanques

Can this fit breath 26 yes 2013

Posted by edwin vanques on 06/12/2015

Reply from TartyBikes on 07/12/2015

Hi Edvin - These should fit your Breath frame fine as long as you've got a hub spaced to fit snail cams. Thanks, Mark

Felix Steward

Would you recommend these for an Echo 24"?

Posted by Felix Steward on 12/02/2016

Reply from TartyBikes on 12/02/2016

Hi Felix - Echo's 24" frames (apart from the early Urban street frames with vertical dropouts) all feature their own integrated tensioners which we find are much better than using snail cams. Is there any reason you're unable to use them on your frame? If you'd like any help or tips for setting the chain tension up on your bike feel free to drop us an e-mail and we'll see how we can help out. Thanks, Mark


Write a review


Based on 4 customer ratings


does exactly as there meant to

Posted by ant on 19/11/2011

Does exactly as they're meant to and won't let you down.

Reply from TartyBikes on 21/11/2011

Hi Ant - These cams do seem to work well, and are good value for money too. Thanks for the review.


Does the job...

Posted by David on 20/11/2011

I love these snail cams, and I believe they are the only ones that have the teeth which prevents the wheel from sliding. Cheap, light and pretty. Currently using on an Echo Lite 09.

Reply from TartyBikes on 21/11/2011

Hi David - There are a couple of other models of cam which use this notched system too, such as the RockMan CNC and Try-All 'H' cams. However they do cost a little more. The Montys work well though, and are great value for money. Thanks for the review!



Posted by Daniel on 06/11/2012

The notches make aligning the wheel so much easier and they don't come loose when riding. Thanks alot.

Reply from TartyBikes on 07/11/2012

Hi Daniel - I'm glad you like the snail cams. For the price they work very well. Thanks for the review!

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