a built-in bearing race and a threadless 1" steertube

No worries of compatibility or installation

It also features a integrated headset

and addresses all of the problems that those hubs had infamously been plagued with in the past

are fully serviceable

Seven iDP M1 Youth Race Helmet - Grey Size:Youth Large a built-in bearing race andThe M1 Full Face Helmet is perfect for anything from racing to full days of uplifting or bike park laps, the M1 Helmet will keep you protected and comfortable. Built with a lightweight ABS shell for durability with 13 vents to intake cool air and a heat exhaust to vent. The M1 features a large eye port that offers a greater field of vision and improved goggle fit. Size guide: Youth Medium: 18. 8" 19. 6" (48 50cm) Youth Large: 19. 6" 20. 5" (50 52cm)