Yamaha Bolthex. Socket Button – YZF-R155 V3 (90111-06137) (Clone)

The Yamaha to-be-replaced Hex-Socket Button Bolt (part no. 90111-06137) is a small but critical fastener commonly used across Yamaha models including fairing, fender or frame mounting points. In clone or aftermarket versions, it retains the same design intent: a button-head top for a clean, low-profile look, and an Allen (hex) socket drive for secure tightening. The original part is made from durable steel to resist shear forces while maintaining strength under vibration. This bolt is often replaced in the event of stripped heads, lost screws, or when upgrading to more corrosion-resistant or visually distinct hardware.