Prothane 13-512 Polyurethane Engine Motor Mount Insert Kit - Mitsubishi Lancer Evolution X

The Prothane 13-512 is a polyurethane motor mount insert kit engineered for the Mitsubishi Lancer Evolution X. Designed to fill the voids built into your factory OE motor mounts, these inserts significantly reduce engine movement under hard acceleration, improving power transfer efficiency, throttle response, and launch traction for both street and track use.

OE motor mounts are designed with intentional voids to dampen noise, vibration, and harshness (NVH) for everyday comfort. While effective for daily driving, these voids allow excessive engine movement during aggressive driving, robbing performance and affecting drivetrain alignment. Prothane's polyurethane inserts fill those voids, delivering the stiffness of a solid motor mount at a fraction of the cost.

Key Features:

• Constructed from specially formulated polyurethane — far more durable than OE rubber
• Resists heat, engine fluids, road salts, and other harsh conditions that degrade rubber over time
• Durometer rating of 80–85 — significantly stiffer than stock rubber for measurable performance gains
• Reduces wheel hop and improves hard-launch traction
• Improves shifting feel and precision by limiting engine torque movement
• Direct insert design — fills OE mount voids without requiring full mount replacement
• Available in red or black; both colors share identical durometer and performance characteristics
• Backed by Prothane's lifetime warranty against defects in materials and workmanship

Note: Filling OE mount voids will reduce some cabin NVH isolation compared to stock. This is an expected and acceptable trade-off for performance-oriented drivers. Includes pre-lube; proper lubrication at installation is recommended to prevent squeaking.