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Sold: Turner Motorsport Polyurethane Engine Mounts - 70A

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    Sold: Turner Motorsport Polyurethane Engine Mounts - 70A

    For sale is a set of Turner Motorsport Polyurethane Engine Mounts in performance-street-spec 70A durometer. Only used for about 100 miles and are practically new. Reverting my daily driver to factory bushings.

    These accomplish the otherwise impossible blend of great compliance/comfort for sporty street driving and at the same time noticeably improve engine response. A small amount more NVH only at idle, and smoother throughout the rest of the range than any other poly mount that I have tried. They are rebuildable. The excess unthreaded portion of the stud ends has been trimmed to increase clearance and make installation and removal easier.

    Retail for $497.99 ($423.29 on sale).

    Price: $245 shipped to continental US. Shipping elsewhere buyer-paid.

    Sold!

    Turner's description is below:

    Rubber engine and transmission mounts for a street car and solid aluminum for the track, right? Well, it's not that straightforward anymore.

    Stock rubber fluid-filled mounts are designed to be soft and comfortable, limiting the NVH (noise, vibration, and harshness) felt by the driver. The drawback inherent with a conventional design is driveline deflection, making it more difficult to put the power to the wheels, as well as making a money-shift or miss-shift more likely as they age. Solid mounts are exactly the opposite of this - they permit tons of NVH while offering zero deflection, making these a must have for track-driven vehicles looking to capitalize on every ounce of performance available. Enthusiasts looking to find the best of both worlds often look to polyurethane engine mounts - and many are disappointed with other designs on the market. Seeking a mount that offers a positive connection yet doesnˇ't deform, fail, or rattle the fillings out of their mouths is frequently a lost cause.

    Until now.

    We engineered these mounts with these very concerns in mind. We know if a soft mount offers a sloppy connection it doesn't work on the track, and a solid mount isn't acceptable as a daily driver (for most!) and set out to engineer a mount that would meet the needs for both. At the core of our enclosed design is a partially-constrained, multi-piece polyurethane bushing with precisely-set preload. This architecture absorbs and disperses resonant engine frequencies as opposed to amplifying them (like some other designs do), which results in a positive-connection, enthusiast-feel mount without the vibration.

    We offer two durometers, with both densities offering similar "positive connection" feeling. 70A is slightly softer and offers more of a stock feel, while 90A delivers a little more engine "feel" while under acceleration.

    Product features and benefits:
    • Crisper throttle response, positive shifter location, direct power transfer
    • High quality polyurethane offered in both 70A & 90A durometers (rebuildable, too)
    • Resistant to water, ozone, and chemicals, maintaining its resiliency and elasticity longer than conventional rubber.
    • Precision machined billet 6061-T6 aluminum housing, black anodized for durability and corrosion resistance. Grade 10.9 stud - fear not, big turbo owners.
    • Engineered in-house and made in America
    Last edited by WBVenom; 05-09-2026, 09:39 AM.

    #2
    Price drop: $245 shipped to continental US. Shipping elsewhere buyer-paid.

    Comment


      #3
      I have Gruppe N engine mounts in one M3, but pulled out a set of BW mounts from a second M3 because the NVH at idle was pretty terrible. What was your experience? I’m aware I can increase idle to 900-1000 RPMs but curious if the NVH with the 70A was more than you hoped for. I’m curious in trying these.

      Comment


        #4
        I have used the following motor mounts with the following results:

        OE BMW E46 Non-M Motor Mounts:
        BMW E46 323Ci: Very low (acceptable) NVH at low RPM. Very low (acceptable) NVH at high RPM. Poor motor control.
        BMW E46 M3: N/A

        OE BMW E46 M3 Motor Mounts:
        BMW E46 323Ci: Low (acceptable) NVH at low RPM. Low (acceptable) NVH at high RPM. Moderate motor control.
        BMW E46 M3: Low (acceptable) NVH at low RPM. Low (acceptable) NVH at high RPM. Moderate motor control.​

        RevShift Polyurethane 80A Motor Mounts:
        BMW E46 323Ci: Low (acceptable) NVH at low RPM. Low-moderate (acceptable) NVH at high RPM. Good motor control.
        BMW E46 M3: Low (acceptable) NVH at low RPM. Moderate (unacceptable) NVH at high RPM. Good motor control.

        Turner Motorsports Polyurethane 70A Motor Mounts:
        BMW E46 323Ci: N/A
        BMW E46 M3: Moderate (unacceptable​) NVH at low RPM (idle only). Low (acceptable​) NVH at high RPM.​ Excellent motor control.​

        Note the inversion of the Turner Motorsports Polyurethane 70A motor mounts' NVH. They only induce some noticeable vibration at idle. Amazingly, at all other RPM all the way to redline, they are smooth as butter. No other mount behaves this way. Every other mount I have tried results in higher NVH with higher RPM, typically peaking at various resonant frequencies throughout the range. Turner has really pulled off a miracle here and somehow made a mount that is smooth throughout the entire range, except at idle, where it is a bit too much vibration for my liking. I really wanted to keep them in due to the buttery smooth operation throughout the RPM range, but the vibration at idle was just a bit too much for me. Admittedly I do like vibration to be nonexistent at idle. If you were to increase idle RPM, it would likely solve this issue.

        Note also that in my experience, transmission mount type has a larger impact to cabin NVH than motor mounts do. OE BMW motor mounts with even soft ECS 70A poly trans mounts results in too much cabin vibration for me. The only trans mounts I will run are OE BMW, Rogue Engineering rubber, or UUC's old gen1 rubber. ​


        Comment


          #5
          Sold!

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