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Thorn 104mm BCD 4 Arm Reversible Single Chainring 3/32 Inch - Black

Customer Reviews (7)
4.1 / 5| Write your review
£34.99
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£34.99 Please note this product has selling restrictions to your country. was
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Details
Product Reviews (7)
Questions & Answers (1) Q & A
Details
To help correctly identify your chainring, crankarm spider or chainset go to our:

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Product Reviews (7)
Overall Product Rating 4.1 / 5
Single Speed Chainring
By
23 Dec 2012
5 / 5
I recommend this product
ConsNone yet
Prosquality, value
Impressed with the build quality, really like the choice of # of teeth, wish I'd tried one before, although will have to see if it stands the test of time.
Great Upgrade
By
12 Nov 2012
5 / 5
I recommend this product
ConsNone
ProsQuality, Weight, Price
I needed this to upgrade the new Kona Unit from a single speed off roader with a 32T chain ring in to a multipurpose beast of trail and rugged road bike with the 44T Thorn Chainring.

I was really impressed with both the build quality but the weight too this is the ideal upgrade frof this bike to ensure that it fullfills the trail and road requirements.
Pashley Hang Your Heads In Shame ...
By
17 Oct 2012
5 / 5
I recommend this product
ConsNone
ProsQuality, finish, efficiency
... my Pashley Paramount got dropped by someone moving it without my permission and the chainring got bent. The crank arm and spider were good as new so I was relcutant to replace the entire crankset (the only option from Pashley) even though this was cheaper than the Thorn chainring on its own. Great decision! I now realise how flimsy and poor quality the original was. This is the same weight, is much stiffer, holds the chain better, looks great and has improved the quality of drive on turning the pedals.
Mr
By
06 Jun 2012
0 / 5
I recommend this product
ConsNone
ProsHardwearing
Great item really good quality . I have a raven sport tour which i have run with 46 tooth for nearly 10000 miles but have just changed it to a 42 . I wish i had done it ages ago as the gearing is much better suited to riding in cornwall . It has transformed my riding and enjoyment .After the 10000 miles the 46 was showing little signs of wear .
Solid Chain Ring For 104 Pcd Cranks
By
22 May 2012
4 / 5
I recommend this product
ProsAttractive, high quality.
Looking to increase my gear ratio I purchased the 48t chain ring to replace my 42t chain ring. My bicycle is a mountain bike single speed conversion. One difference is that this was about twice as thick where it is mounted than a normal ramped chain ring, so it shifted my chain line by a few millimetres.

Looks good, works well, recommended.
Single Speed Rings
By
15 Apr 2012
5 / 5
I recommend this product
Very long lasting rings.
Used these on our tandem crossovers so buying the same again for our new tandem.
Top Quality Product
By
04 Oct 2010
5 / 5
I recommend this product
ConsNone
ProsQuality product, great value
Bought this to convert my commuter bike into a 1x9 speed. It's rampless, so there's no danger of the chain jumping off and causing an accident mid-shift. This is a lovely high-quality CNC'd lump of aluminium. Fits my Shimano crankset like a dream (after I milled some of the shoulders off so it'd fit the middle mount. It's even reversible, so when you wear one side of the teeth out, flip it and bingo - a (nearly) new chainring!
Questions & Answers (1)
Chainring
By
25 Apr 2016
Hi.
i'm looking for a chainring with 40 teeth , 104 , 4 holes bcd , that will fit a Shimano LX ckrankset. it should work with a bushguard, as single (the bike is with rohloff).
will this item fit ?
do you have a cheeper item that will fit ??

thanks.

eli
SJS Customer Service:
Hi, this:
http://www.sjscycles.co.uk/thorn-104mm-bcd-4-arm-alloy-chainring-prod10201/
or any of these should do:
http://www.sjscycles.co.uk/104-bcd-4-arm-single-dept723_pg1/
cheers, Robin