RameyRacing Mercury 450R Stage 1

Stage One Engine Rebuild Package

Our Stage One Engine Rebuild is designed for enthusiasts who demand reliability, precision, and performance from the ground up. This package includes a complete overhaul using high-quality components and meticulous machine work to bring your engine back to life — stronger and more durable than ever.

What’s Included:

• RameyRacing Connecting Rods: Precision engineered for the 450R, designed to improve strength and reliability.
• Diamond Pistons: Premium forged pistons for enhanced durability and performance under high stress.
• ACL Race Bearings: Proven under extreme conditions, these bearings offer superior oil clearance and longevity.
• Cometic Gaskets & P1 Fasteners: High-performance gaskets and fasteners ensure a perfect seal and torque retention.

Block Work:

• Fully disassembled and deep cleaned
• Decked for optimal surface finish
• Bored to 0.25mm over for increased displacement
• Diamond honed for perfect cylinder wall finish and ring seating

Cylinder Head Service:

• Thorough cleaning
• Precision valve job
• Resurfaced for ideal head-to-block mating