Rigid engine and transmission mounts provide for better handling, better acceleration, and better performance in general. Mounts that are too rigid, however, will transmit vibration and harshness into the driver's cabin. Until now.
By using computer engineering and digital design STOMSKI RACING has developed the FIRST truly symmetrical 901/911/930 Semi-Solid(SS) Transmission Mount, thus allowing you to run stiffer mounts without sacrificing comfort or ride quality. Our symmetrical design allows you to custom tune your ride- determining feel, function, and fun. We provide 3 different durometers of inserts that allow you to custom tune your ride, now, and later if your application might change. Because our SS mounts are SYMMETRICAL, they more evenly distribute the load and provide more support, as well as more thoroughly isolate vibration and prevent harshness transfer to the cabin. Unlike other non-symmetrical SS mounts, there is no compromise when using STOMSKI RACING's SR017 because our mounts are symmetrical and thus FULLY support and FULLY absorb SYMMETRICALLY and thus more evenly isolate vibration and more evenly provide stability.
Our proprietary technology urethane inserts provide longer lasting mounts, more resiliency, and better ride quality. Our aircraft quality aluminum housing halves provides awesome looks, weight savings, and sustained durability. Completing the entire package, stainless steel components add the ultimate upgrade. You can buy separate mounts and separate inserts, or regularly replace factory parts, or suffer a harsh ride, or simply buy right- buy STOMSKI RACING.
Road tested and track proven, STOMSKI RACING's SR017 provides better shifting, better weight transfer, better handling, crisper throttle response, better acceleration, and of course GREAT looks, without any loss of comfort. Each mount comes complete with two aluminum housing shells/halves, stainless steel sleeve and disks/spacers(2), an M12 Schnorr washer, and for a limited time only, 2 each of our S, RS, and RSR urethane inserts.
Application includes all 901 and 911 transmissions from 1965 through 1971 and 930 transmissions from 1976 through 1989. Installation involves simply pressing out the worn rubber from the factory transmission bracket and slipping in an SR017 housing shell with your choice of insert in place on the top and the bottom of the transmission bracket, sandwiching the bracket for complete support and vibration isolation. Two sets of SR017 needed per car (and two SR016 needed for engine mounts as well).
Our highest quality urethane inserts may be combined, mixed, or matched as needed, and come with these fitment suggestions:
S- Yellow- Street Performance/Club Sport- Dramatically stiffer than stock (or sport) factory rubber mounts, our S urethane inserts provide a substantial improvement in performance, with no noticeable or measurable increase in cabin noise or vibration.
RS- Red- Full Performance/RennSport- An upper-level durometer urethane, our RS urethane inserts are a no-compromise solution for the dedicated performance minded 911 owner, with only barely perceptible increase in occasional noise or vibration at the most extreme of performance situations.
RSR- Black- Ultimate Performance/Full Race/Track- Utilizing our highest level durometer urethane, our RSR urethane inserts are the closest you can get to solid engine mounts with only minor or occasional vibration or cabin noise at certain higher RPMs or when driven very hard with open exhaust, solid suspension, and no creature comforts.
For a limited time, with each SR017 ordered we will include all THREE sets of EACH durometer inserts to allow you the full versatility of an adjustable, tunable ride.
Application Guide For STOMSKI RACING SS Engine/Trans Mounts
PDF Tech Sheet (SR017)