Aluminum Cog Size:20T Casing Selection: Go with Durable

Casing Selection: Go with Durable for lighter weight and responsive trail handling

SON’s unique pressure compensation system eliminates problems with water getting into the bearings as the large volume of the hub body warms and cools

Design: Armless

Waterproof breathable membrane blocks moisture while regulating heat

Aluminum Cog Size:20T Casing Selection: Go with DurableDescription The Wolf Tooth Aluminum Single Speed Cog is built for riders who want a clean, dependable drivetrain without compromise. 7075 T6 high quality aluminum, this cog delivers smooth engagement, quiet operation, and consistent performance across trail, gravel, and urban single speed builds. Designed around Wolf Tooths proven tooth profile, it works seamlessly with modern derailleur chains while maintaining excellent chain retention under load.