POP end caps are designed specifically for use with 5mm compressionless brake housing. Not all frames or brake calipers are designed to accept a standardized end cap, so the POP end cap acts as a reducer.

• Reducer end fits brake calipers and frames that are not designed for normal end caps
• Durable alloy construction resists the increased stresses of compressionless brake housing
• Color: Black
• Material: Aluminum