Fast Feb Vibra Technics | Performance Uprated RH Engine Mount Road Spec | ST150
Vibra Technics Performance Uprated RH Engine Mount - Vibratechnics (ROAD SPEC)
Component ID: FOR600M | OEM Supersession: 5S616F012CB, 1343438
Core Engineering Principle:
A unibody, triple-bonded elastomeric matrix engineered for anisotropic stiffness modulation. The assembly employs a proprietary, oil-resistant NBR (Nitrile Butadiene Rubber) compound, dynamically cured under pressure to achieve a graduated durometer profile—softer in the axis of primary vertical vibration (Z-axis) for NVH attenuation, and significantly reinforced in the longitudinal (X-axis) and lateral (Y-axis) planes to counteract powertrain torque reaction and transient load deflection.
Structural Differentiation from OEM:
The OEM mount fails via radial fatigue cracking due to homogeneous rubber density and low-strain amplitude hysteresis. This unit addresses the failure mode through a tri-phasic bonding process: metal insert → primary adhesion layer → graduated elastomer core → secondary adhesion layer → outer retention cage. This creates a shear-decoupled damping system, isolating high-frequency vibrations (40-200 Hz) while maintaining kinematic rigidity under low-frequency, high-amplitude loads (e.g., hard acceleration, lift-off torque).
Performance Characteristics:
Static Stiffness Increase: ~40% over OEM in the primary load plane (fore-aft), reducing engine deflection to ≤2.8° under full torque load.
Dynamic Transmissibility: Maintains OEM-level vibration isolation (>85% attenuation) above 50 Hz, critically avoiding the harmonic resonance window of the ST150's Duratec 2.0L inline-four (idle vibrations at 30-35 Hz remain minimally affected).
Hysteresis Control: Incorporates micro-perforations within the elastomer to manage heat buildup during sustained high-load cycles, preserving damping coefficient consistency a critical factor for track use where fluid-filled OEM mounts suffer performance degradation.
Manufacturing Pedigree:
The component benefits from Vibra-Technics' application of multi-axial fatigue simulation—technology derived from Tier 1 supplier methodologies—optimizing the elastomer's strain energy density profile to outlast the vehicle's service life without the progressive softening characteristic of OEM mounts.
In essence, this mount replaces a failed homogeneous isolator with a kinematically tuned, anisotropic damping assembly, transforming a wear item into a dynamic chassis component that rectifies a fundamental driveline weakness in the ST150 platform.
Application-Specific Tuning (Road Spec):
This "Road Spec" variant strikes a calculated balance between the excessive deflection of the degraded OEM mount and the elevated NVH of a true competition bushing. The asymmetrical internal webbing is CNC-molded to counteract the specific clockwise engine torque and mass distribution of the transversely mounted Duratec, making it a true Right-Hand (RH) specific component, not a symmetrically mirrored design.
Direct Benefit Realization:
Eliminates the "head-toss" shift shock and wheel-hop tendency under hard launch caused by OEM mount deflection.
Preserves daily drivability by filtering high-frequency harmonics from the accessory drive and valvetrain.
Provides a deterministic shift linkage feel by stabilizing the powertrain's center of rotation, improving mechanical feedback.

