We only sell the Renthal Works 520 R3.3 O Ring . These have replaced the old R3 Chain.
After a lot of practical research on the roads and green lanes of Devon, these chains have proved to give exceptional service. Also fits Yamaha WR250R and WR250X models
It is a 118 link chain which fits all the combinations of TTR250, WR250R/X and WR250F sprockets that we sell although it will need some links taking out for smaller sprocket sets. This is easily done with a chain breaker. Guide to shortening a chain here.
This 520 o-ring chain is designed for the extreme rigours of off road use.
Brand: Renthal
NEW Renthal Bike Chain 520 pitch R3.3 SRS O Ring 118 Links. Renthal R3 chains are specially developed utilising Renthal’s SRS technology to increase the service life.
The special SRS is pre-loaded during assembly, creating a spring effect. As a chain wears, conventional O-rings and X-rings loosen their seal whereas the SRS has the inherent ability to regulate a constant sealing pressure against the side plates throughout the life of the chain.
The pack contains both a rivet (soft) and a split link plus rubber gloves and sticker.
NB The original chain and sprockets on a Raid are 428 so this chain will only fit if the sprockets are upgraded at the same time to match.
