RSP Cassette Expansion Sprocket 42T

Product Description

Easily extend your current 36t cassette to 40 or 42t cassette.

• 40 & 42t versions available
• Available in Black, Red & Blue
• Coverts 36t 10 speed cassettes to 40 or 42t
• Compatible with most cassettes
• Simply remove your 17t sprocket to make room for your expansion sprocket
• Compatible with medium and long cage derailleurs
• Extended derailleur limit screw supplied which will be required for some derailleurs