- Coverts 36t 10 speed cassettes to 40 or 42t
- Compatible with most cassettes
- Compatible with medium and long cage derailleurs
- Extended derailleur limit screw supplied which will be required for some derailleurs
- Teeth: 40 or 42t
- Colour: Black, blue or red
Whether you need some help with a product query such as sizing or have questions and comments about our services, our customer services team is here to help. You can contact us by phone, email, or live chat.
Phone: 01384 476 267
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