100 Percent Aircraft Composite Full Face Helmet - L - Silo YGroup_7034083901485 the flat side has 11

the flat side has 11 pins

Compatible only with absoluteBLACK Super Steel chainrings (proprietary bcd)

designed to dampen all the hard knocks

RIDE CHARACTERISTICS

100 Percent Aircraft Composite Full Face Helmet - L - Silo YGroup_7034083901485 the flat side has 11The Aircraft is precision engineered with a Fiberglass Composite shell providing a very strong, yet lightweight design. 25 enhanced venting channels create the Active Cooling System; specifically designed to manage airflow and ventilate the entire helmet. Features: Lightweight Design: Featuring a Fiberglass Composite shell. Active Cooling System: Maximizes airflow with a staggering 25 ventilation ports. Antimicrobial, washable and replaceable comfort