FSA NO.55R 1.5" Integrated Headset for Road & MTB Builds 2D1/2D2/2D3/2D4/2D5/2D6/2D7/2D8/2D9/2D10/JPA/JPA2/JPA3/JPA4//JIN/JIN2/JIN3//JNY/JNY2//JTX/JTX2/JTX3//JCA//JCO/JCO2/JCO3/ Premium IS52 Internal Aero Headset

Premium IS52 Internal Aero Headset engineered with aircraft-grade 6061 aluminum for exceptional strength

and improved ride comfort on city streets or velodrome tracks

smooth pedal response

sealed pistons

the Neo Socks feature lightweight synthetic materials tailored for hot weather cycling

FSA NO.55R 1.5" Integrated Headset for Road & MTB Builds 2D1/2D2/2D3/2D4/2D5/2D6/2D7/2D8/2D9/2D10/JPA/JPA2/JPA3/JPA4//JIN/JIN2/JIN3//JNY/JNY2//JTX/JTX2/JTX3//JCA//JCO/JCO2/JCO3/ Premium IS52 Internal Aero HeadsetUpgrade your bicycle's steering with the FSA NO. 55R Headset, Model 558 a high performance, 1. 5" integrated headset engineered for precision, durability, and sleek aesthetics. Designed for both road and mountain bike (MTB) frames, this headset offers seamless compatibility with modern, internal cable routing systems, making it the perfect choice for custom builds and upgraded bikes. Materials & Construction: Constructed from high quality, corrosion