The PROX Head Gasket Kit for the rear shock absorber is considered an upgrade compared to OEM parts. It is made from an alloyed 6061 T-6 housing. The kit includes a guide bushing, oil seal, dust seal, O-ring, and retaining ring. The set comes ready for installation, ensuring a hassle-free upgrade for your suspension system. With this kit, you can achieve better performance and durability for your KTM, HQV, or GASGAS bikes. Whether you're an enthusiast or a professional, this kit simplifies maintenance tasks, providing improved reliability and longevity of your rear shock absorber.