Insight Upgrade Seatpost Clamp for BMX Racing
Insight Upgrade Seatpost Clamp. Insight parts are part of the Chase Bicycles Group make Higher end Quality BMX Parts. This clamp is Quick Release and available in several colors. Most Mini, Junior and Old School BMX Frames take a 25.4mm clamp. 25.4mm is equal to 1 inch. Larger Pro size Aluminum frames like a Pro XL for example, take the 31.8mm clamp, aka 1 1/4 inch.