Middleburn RS8 4-ARM 104bcd MONO spider is designed to take a single chainring.
This spider is ideal for a range of diffrent bike setups. The most popular uses for this spider are single speed, hub geared or a conventionaly geared bike running a single ring up front.

 

Spider has been CNC machined from a billet 7075T6 one of the strongest alloys available today for unsurpassed durability. 
 
The spider has been machined to give greater support to the ring and gives it a sleek look.

 

CHAINLINE: 50mm

Shoulders are 90mm