Shutter Precision DS-4 Dynamo Headlamp ModelNumber=J2138 Designed for carbon steerer tubes

Designed for carbon steerer tubes but works with metal steerer tubes with ID from 23

Position plate offers 2 mounting positions to accommodate large and small computers

Compatible with all 104mm 4 Bolt chainrings

Foaming formula clings to vertical surfaces

Small size must have head tube outside diameter must be 54mm or less

Shutter Precision DS-4 Dynamo Headlamp ModelNumber=J2138 Designed for carbon steerer tubesCompatible with Shutter Precision and other 6V Dynamo hubs Single mode low beam meets German StVZO regulation Includes headlamp, stem mount and fork mount brackets and mounting hardware Model DS 4 Dynamo Lumens 290 Color Black Weight 120g