Z1R Z1 Z2 Ｗアームロックワッシャ付きスプロケ　530チェーン用17～19T　サンスター W5H8-17/18/19 1枚選択

Innovative Solutions from a Sprocket Specialist

Addressing the weak points of OEM lock washers with a specialized design.

On certain Kawasaki Z-series models, the OEM front sprocket lock washer features a round inner diameter rather than a splined one. To prevent rotation, it relies on a single, small integrated tab that fits into the sprocket. This tab is often prone to shearing off under the stress of drive torque and vibration, which can lead to the sprocket nut coming loose. Furthermore, because the standard washer is perfectly flat, bending it against the wall of the nut can be a cumbersome task.

To solve these issues, we have released the "Double Arm Lock Washer." ### Key Improvements:

Enhanced Durability: We redesigned the anti-rotation tabs, making them wider and increasing the count to two. This significantly boosts the component's overall strength and reliability.

Improved Workability: The outer circumference of the washer now features a shape that is easy to grip with tools, making the bending process much smoother and more efficient.

While this sprocket is now a dedicated component designed specifically for use with the Double Arm Lock Washer, it remains fully compatible with standard OEM lock washers, ensuring flexibility for the user.