Black	10mm	Add this item to your wishlist
Black	14mm		Discontinued - no longer available
Blue			Discontinued - no longer available
Red			Discontinued - no longer available
Silver			Discontinued - no longer available

Top Features of the DMR Chain Tugs Chain Tensioner

Sold as a pair

Available for single speed rear wheels - BMX or MTB

Invaluble asset for anyone who stretches chains or knocks their rear wheel out of alignment

CNC machined to fit 10mm axles

14mm version includes reducers for 10mm axle in 14mm frames

Made in the UK

18g

MTB

About Chain Devices & Bash Guards

Chain devices fit in various places around a mountain bikes transmission and help to eliminate chain suck and chain slap when riding over rough terrain or landing from big drops. There are a number of fitments, some frames have ISCG mounts which are lugs on the drive-side of the bottom bracket shell and allow direct fitment to the frame, other chain devices fit in between the bottom bracket and frame and require a specific bottom bracket with a larger drive-side cup, and finally there is the type that clamp around the seat tube in place of the front mech. Also within this section you can find single speed chain tensioners which fit in place of the rear mech and take up any chain slack.There is also a selection of wheel tugs which stop you pulling your wheel over in horizontal dropouts.

About the DMR brand

DMR was kicked into life in the Winter of '95, the idea was to make UK designed bike parts that worked for the way we liked to ride.

Buy options

Delivery Information

The delivery options available for shipping this product along with the contents of your basket to USA are:

Standard Delivery: Estimated Delivery within 8 working days – $12.70
Spend $58.05 more to qualify for free delivery
Priority International Delivery: Estimated delivery within 6 working days - $19.05
Tracked Courier Delivery: Estimated delivery within 4 working days - $31.80

International Delivery

Wiggle ships to over 100 countries. To see what delivery options are available for other destinations you can update your delivery destination via the International Options feature at the top right of the website.
More information on International delivery options

Returns Information

We will happily refund or exchange any item purchased on Wiggle if returned to us within 365 days, excluding Wiggle gift vouchers and personalized products except when faulty.

Returned goods must be unused and supplied with their original packaging, unless the goods are faulty.
Wiggle will pay the return postage costs for any faulty items.
More information on Wiggle's return policy

Buy options

DMR Chain Tugs Chain Tensioner 4.3 5 4 4

Simple device that saves your frame/chain Very simple to set up, saves your frame and chain from damage. Highly recommended for cyclocross bikes. 12 June 2012

Does exactly what it says.... In the description. It has a nice well engineered feel to it, the slots fit snugly into the sliding dropouts on my 456. I ended up cutting off the furthest nub and filing it flat so it moves more forward and back but I could have just increased the length of the chain instead. Recommended if a little pricey. I only really needed one for the drive side so would have preferred to pay less to only get one tensioner. 08 March 2012

yes but Overall, these are really good, and although one is enough, having a pair might not hurt. The build is strong ans adjusting the tension is really easy with the self locking nylstop nuts. The only problem is the size of the eyelet that goes around the axle. It has a rather long centering piece designed to go in the area of the dropout between the axle and the frame, and if you don't have the proper chain length, these simply won't fit. You need at least 7mm clearance. Also, the part on which the nuts presses, leaning against the frame, is designed for dropouts up to 9mm wide. So be sure your dropouts are not thicker, and not too thin either. Other than that, it's dead easy to use and you can fit them in a matter of seconds. No more scratching that gorgeous paint! 27 September 2010

Well Tug Me!!! Play is the only way the highest intelligence of humankind can unfold and my chain slipping was preventing me from playing. Happiness is not something ready made. It comes from your own actions so I logged onto the Wiggle universe and ordered the DMR Chains Tugs Chain Tensioner. The common idea that success spoils people by making them vain, egotistic and self-complacent is erroneous; on the contrary it makes them, for the most part, humble, tolerant and kind. Thank you DMR and thank you Wiggle. 15 June 2009

View all reviews

Buy options

5 Questions | 9 Answers

Product Q & A

Ask your questions and share your answers.

Q & A HOME

« Back

SEARCH Q & A

Expand All

3 answers

This is really basic - do these things allow you to pull backwheels back symmetrically?

I have a commuter bike with Shimano NExus gears. Chain stretches and starts to jump. Can I use these to help me pull the wheel back hilst keeping it aligned - adn do they just fit while I use them or do they stay on all the time?

3 years, 5 months ago

RAJ47

1I have this question too

Answers

Answer:

Stay on all the time. I've got one fitted to an Alfine. Make sure you have the white "non-turn" washers as they will be compatible with this. The blue/green turn washers need to go into the slot on the dropout which will have the tensioner in it so won't fit.

They will allow you to pull the wheel back symmetrically although you'll need align it yourself.

I'm assuming your dropouts are slot dropouts. If they aren't this won't do any good.

11 months ago

u02sgb

Top 50 Contributor

Answer:

Usually people use those on single speeds to adjust the tension of the chain.

Most of the time, one only is really necessary as the wheel could mostly only move from the drive side, where the chain is in tension.

The chain tugs (or the chain tug if you use only one) will stay on the bike, slotted in the frame dropouts, and pressed against them by the wheel nuts.

you do need to make sure you have enough space to put them though, as they are usually made for horizontal dropouts and there is loads of clearance with these. Not so much with vertical dropouts.

2 years, 4 months ago

ekynoxe

London

Answer:

The allignment of the wheel is up to the user, usually by counting the amount of turns on the bolt and checking allignment of the wheel. The chain tugs stay on the bike.

3 years, 5 months ago

guru

hampshire.uk

3 answers

Sorry, could someone explain the difference in the size?

Is it the diameter of the hole?

i have a single speed MTB and don't want to rode the wrong size.

3 years, 3 months ago

Anonymous

1I have this question too

Answers

Answer:

Yes, diameter of the hole. The larger one is for a solid axle, the smaller is for Quick release.

11 months ago

u02sgb

Top 50 Contributor

Answer:

Yes, the diameter is the diameter of the hole.
Also, it's also the width of the part that will slot in the dropout around the axle.
See photo, as it's much better to explain and you can't see it from the wiggle product image.

The wiggle photo by the way is the 14mm version.
I bought the 10mm (the attached photo) and there are no spacers coming along with them.

The 14mm will certainly not slot into a 10mm dropout, so you'll need to measure your axle to make sure you get the correct one.

Country : United Kingdom