e*thirteen ERC extender sprocket for Shimano cassette 42T (blue)

e*thirteen ERC extender sprocket for Shimano cassette 42T (blue)

The ERC sprocket, designed to extend the gear range of Shimano cassettes. This 42-tooth sprocket gives riders the option to easily and efficiently adjust their gear ratio for better performance on climbs and in demanding terrain.

This extender sprocket is an ideal choice for riders who want to increase their gear range without having to replace the whole cassette. It is particularly suited to trail and enduro riders who often face demanding climbs and want a lower gear available.

• Extends the gear range of an existing Shimano cassette
• 42 teeth for a significant improvement in the low gear
• Easy installation on compatible Shimano cassettes
• Helps riders cope better with steep climbs
• An alternative to buying a completely new cassette with a wider range