ATHENA R4856-116 Race Gasket Kit for Yamaha 125 YZ 1999-2004

Breathe new life into your race engine with Athena's Race Gasket Kit. Designed for racers and engine builders, this premium gasket kit provides the flexibility to precisely adjust cylinder height for optimized squish clearance, compression ratio, and valve timing. Manufactured with advanced sealing materials and backed by over 40 years of Athena engineering, these gaskets deliver exceptional durability, heat resistance, and leak-free performance under the extreme demands of motocross and enduro competition.

• Race-spec gasket kit designed for precision engine tuning and performance builds
• Includes multiple cylinder base gasket thicknesses for accurate squish and compression adjustment
• Premium gasket materials resist heat, oil, fuel, and extreme cylinder pressures
• Precision-manufactured to meet or exceed OEM sealing specifications
• Advanced sealing treatments help prevent leaks in critical engine areas
• No additional silicone sealants required for proper installation

Includes:

• Cylinder Head Gasket
• OEM Thickness Cylinder Base Gasket
• 0.10mm Thinner Cylinder Base Gasket

• Designed for high-performance 2-stroke motocross engines
• Allows adjustment of squish clearance, compression ratio, and valve timing
• Manufactured using premium gasket materials, including Athena's proprietary Motorgasket® technology where applicable
• Engineered for maximum sealing under extreme mechanical and thermal loads

The ATHENA R4856-116 Race Gasket Kit is designed for Yamaha 125 YZ models from 1999 through 2004. It provides a dedicated gasket kit solution for the specified motorcycle application and is identified as a race gasket kit.

Built for use with the listed Yamaha 125 YZ model range, this kit is suited to service and rebuild work where replacement gaskets are required. Confirm the motorcycle year and model before ordering to ensure the part matches the intended application.

Manufactured by ATHENA, the R4856-116 offers a direct product reference for professional technicians, powersports service departments and riders maintaining compatible Yamaha motorcycles. The kit is supplied as one unit.

Features:

• Brand: ATHENA
• Part Number: R4856-116
• Product Type: Race gasket kit
• Application: Yamaha 125 YZ models from 1999 through 2004
• Unit of Measure: Each