The chain on your bike slowly wears out as you build up the miles by getting stretched longer and longer. A chain wear tool is a quick and handy device that will tell you when your chain needs replacing. If left for too long a stretched chain will begin to wear out your chainrings and could result in poor performance from gear changes and even be potentially dangerous if the chain 'slips'. A worn chain can skip over the top of the cogs to cause 'skipping' or 'slipping' gears.
The Ribble R-CWT is designed to give you an instant and accurate guide to indicate how much your chain has worn.
Simply by seeing if the tool drops into your chain or not (no pressure is required so don't push it in further than it drops), you can tell if the chain (0.75 on the tool), or both the chain and cassette needs replacing (1.0 on the tool). This is a small toolbox esential that could save you money in the long term. Keep replacing your chain regularly and it should work with your existing cassette, but leave it too long and the stretched chain will have caused excessive wear to the cassette and both chain and cassette will need replacing.
NB when measuring ensure that a Power, Master or Quick link is not included in the section of chain being measured.
Shows if chain, or chain and cassette need replacing
Small and compact
Easy to use
Check your chain regularly
From our new range of practical and essential accessories and tools. Designed with input from our experienced team of riders and mechanics these are no nonsense essentials engineered to do the job.
Designed in England. Next Day and Tracked Delivery options available.
Founded in 1897, Ribble Cycles continues to be at the very heart of British cycling. From award-winning bikes to innovative clothing and accessories, our long cycling heritage means that we truly understand your needs. Created by cyclists for cyclists.
Road, Mountain Bike, Triathlon, Cyclocross, Time Trial
Does what is says on the tin
Does what is says on the tin and measures wear in your chain. Nothing more needs be said.
19 September 2019
Chain wear tool
Great tool excellent price. Very happy with my purchase
09 July 2019
Chain wear tool as good as a park tool
Good quality, bargain price and as good as a park tool.
16 May 2019
Wish I'd got one earlier - much simpler to use than my old vernier gauge.
26 January 2019
Simple, accurate, vfm tool
Incredibley simple to use and value for money chain wear tool. Just don’t forget to actually use it and save your casette!