Description
Features:
- Machined out of 6061 Billet Aluminum
- Laser Etched COBB Logo
- Updated Design to Absorb More Vibration and Further Reduce Engine Movement
- Minimizes Wheel Hop, Improves Traction
- 85A Durometer Front & 68A Durometer Rear Bushings
The COBB Rear Motor Mount is the best way to minimize engine movement, improve traction, and reduce wheel hop, all without major impact to Noise, Vibration, or Harshness (NVH). Typical bushing designs can rattle your teeth out at idle or during throttle input.
The COBB Rear Motor Mount keeps things in place while minimizing NVH. The combination of an 85A durometer front bushing and 68A durometer rear bushing absorbs more vibration while reducing engine movement when compared to the stock mount.
The main body is constructed of precision machined billet aluminum. A satin black anodized finish protects the mount from wear and tear. Branding is subtle with a laser etched COBB logo on either side of the body.
The sleeves and retaining caps for each bushing are zinc plated steel for durability and longevity. They are designed with serviceability in mind, allowing users to easily change bushings with varying durometer.
Legacy Racing Track-Day / HPDE Evaluation
An upgraded rear engine mount delivers a noticeable improvement in drivetrain control under high-load track conditions.
On-Track Performance Gains:
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Reduced engine movement under throttle application and lift-off
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Sharper throttle response during corner exit
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More consistent power delivery in 2nd–4th gear pull zones
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Improved shift precision under aggressive upshifts
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Reduced wheel hop during hard launches and tight corner exits
Under HPDE conditions, especially during repeated hot laps, the factory rear mount allows measurable drivetrain deflection. Upgrading significantly limits fore-aft engine movement, keeping the powertrain more planted and improving driver confidence when transitioning from braking to throttle.
NVH Considerations:
Expect increased vibration at idle and low RPM, particularly with higher durometer compounds. Once at operating RPM on track, NVH becomes negligible relative to performance gains.
Best Suited For:
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Intermediate to Advanced HPDE drivers
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Time Trial / Autocross competitors
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Drivers running stickier 200TW+ tires
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Vehicles with bolt-ons or tuned setups
For daily-driven cars with minimal modifications, NVH sensitivity should be considered. For drivers pushing the chassis at speed, this is one of the most cost-effective drivetrain stability upgrades available.