Yamaha offers GYTR parts for the YZF-R9 in two stages:

Phase 1 Trackday Kit – upgrades for track-focused riding
Phase 2 WSS Kit – full race setup used in World Supersport, including required homologated components

Part BKN12170GY00 belongs to the Phase 2 engine package.

GYTR R9 Camshaft Assembly 1 IN WSS

Race-developed intake camshaft designed for the YZF-R9, delivering accurate valve timing and strong performance at high RPM. Built for track use, it improves engine response, power output, and durability under racing conditions.

Compatibility:
YZF-R9 (2025+)

Type:
WSS-spec intake camshaft assembly

Function:
Controls intake valve timing for better airflow and high-RPM efficiency.