SKU: GRM123041STR
Lock Down Your Drivetrain for More Predictable Shifting!
OEM chassis mounts are usually designed with the top priority going to low NVH (noise, vibrations, and harshness) and low cost. This means that there is a huge opportunity when you are trying to increase performance. Made to compliment your GrimmSpeed Pitch Stop Mount, our Transmission Mounts will dramatically stiffen up the feel of your drivetrain, allowing for more predictable shifting and greater confidence during spirited driving.
The core of this upgrade is 75A durometer polyurethane bushings, which keep the transmission from moving under high torque without transmitting excessive drivetrain noise and vibration to the chassis.
This part retains OEM fitment for almost all AWD Subaru manual transmission setups. There is a minor difference between the 5 and 6 speed models, but it is an easy fix by using the included 5-Speed Adapter Spacer between the stainless steel bracket and transmission cross member.
Install is a breeze since we use an OEM-inspired press-fit stud in the stainless steel bracket. This minimizes the risk of misalignment or damaged hardware. Our Transmission Mount will arrive fully assembled and ready to install, and all required mounting hardware is included in the kit.
PERFORMANCE:
From the factory, Subaru offers multiple levels of their own transmission mounts, with the softest being the WRX, OEM STI in the middle, and then Group N as their stiffest option. But even the Group N leaves a lot of control left on the table.
With the 75A durometer bushings included on our Transmission Mount, ours are 2 times stiffer than the Group N mounts, which makes them 5 times stiffer than the stock STI mount, and a staggering 16 times stiffer than the stock WRX! That means that the improvement in transmission and drivetrain control will be felt coming from any of the factory options.
Even though this setup is designed to feel right at home on a track-prepped vehicle, there is no need to fear daily driving with it. We have tested a variety of bushing stiffness's and found that these offer the best balance for on-road use, making certain that there is a minimal increase in NVH during normal driving.
QUICK SPECS:
FITMENT:
*Not compatible with 4/5 Speed Automatic or CVT Models
The GrimmSpeed Transmission Mount is only compatible with AWD Subaru transmissions, meaning they are not compatible with the RWD Aisin AZ6 transmission found in BRZ/FRS/86 models.
Drivetrain parts for high-horsepower Mopar, truck, Jeep, and import platforms are stocked at Black Ops Auto Works. Shop differentials, axles, driveshafts, clutch kits, flywheels, flexplates, shifters, transmission components, ring and pinion gears, differential braces, and driveline hardware for Hellcat, Trackhawk, TRX, HEMI, LS, LT, Coyote, and turbocharged import platforms. Every drivetrain part is filterable by vehicle platform, drivetrain layout, transmission type, and power level so the correct part ships the first time. Black Ops Auto Works carries 4,765 drivetrain SKUs across differentials, axles, clutches, and transmission hardware. What This Category Covers The drivetrain transfers power from the engine to the wheels and includes the transmission, clutch, driveshafts, axles, differentials, ring and pinion gears, wheel hubs, wheel bearings, U-joints, shifters, mounts, and bushings. Upgrading these components improves power delivery, durability, and reliability under incr...
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Transmission Mounts parts and accessories are stocked at Black Ops Auto Works. Transmission mounts support the gearbox and control drivetrain movement under acceleration, braking and shifting. Shop urethane, billet, solid and OE replacement transmission mounts, inserts, bushings and supports for Subaru WRX, Ford, Chevrolet, Nissan, Volkswagen, Audi, Toyota, Porsche and other street and track builds. Every product is filterable by year, make, model, trim, engine and drivetrain where applicable, so the correct part ships the first time. Black Ops Auto Works carries 65 Transmission Mounts SKUs across the performance and replacement parts needed for a focused build. What This Transmission Mounts Collection Covers This collection covers direct replacement mounts, firmer performance mounts, transmission crossmember bushings, pitch mounts and mount inserts. A tired mount can allow excessive drivetrain movement, increase shift inconsistency and create unwanted contact between the transm...
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Transmission and drivetrain hardware for manual and automatic platforms are stocked at Black Ops Auto Works. Shop flywheels, flexplates, transmission crossmembers, mounts, coolers, valve bodies, shifters, shifter bushings, release bearings, slave cylinders, U-joints, and transmission rebuild kits for Subaru WRX and STI, Dodge Cummins diesel, GM G-Body and F-Body, BMW B58 and S58, Nissan 350Z, and Toyota GR Corolla platforms. Every part is filterable by year, make, model, and transmission type so builders can confirm the correct fitment before ordering. Black Ops Auto Works carries 1,322 transmission and drivetrain SKUs. What This Category Covers This collection spans the hardware that connects the engine to the drivetrain and manages gear selection, including flywheels, flexplates, transmission crossmembers, bell housings, transmission mounts, pans, coolers, filters, valve bodies, transmission internals, shifters, shifter bushings and cables, release bearings, slave cylinders, U...
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