Cassettes/Freewheels

- Lightweight Design - Steel rings with engineering polymer spacers - Nickel finish - 8 Speed compatible - Weight—346g

- Black polymer spacers - Multiple speed options available

- Steel cogs - Composite spacers

Shimano Dura-Ace R9100 Cassette Spacers

Dimension Steel Cogs are splined for BMX and singlespeed hub compatibility. - Steel with chrome finish - Cogs are splined for Shimano BMX and singlespeed hub compatibility - Compatible with 1/2-inch and 1/8-inch chains