BMW > Z4M > C) CHASSIS, BRAKES, SUSPENSION & STEERING UPGRADES > - Bushes/ Bearings, Mounts, Supports Etc for Suspension/ Engine/ Gearbox etc > ROGUE ENGINEERING
STREET VERSION, (LISTED THIS PAGE)
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RACE VERSION (SEE NEXT PAGE)
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RUBBER SPLITTING ON RTAB
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Description
Re part number re.tab.trk
Rouge Engineering Blue (track - race) or black (street - track) uprated rear trailing arm bushes.
**THIS PAGE LISTS THE STREET / TRACK (BLACK) VERSION BUSHES, PLEASE USE RED "VARIATIONS" BUTTON TOP RIGHT OF THIS LISTING TO SEE THE TRACK / RACE (BLUE) VERSION.
Problems with Factory Mounts:
The factory BMW RTABs (Rear Trailing Arm Bushings) are a very soft material to provide the quietest, most comfortable ride possible. Because of this, we have seen factory mounts require replacement in less than 50,000 miles and 3 years. On modified vehicles, expect them to require replacement sooner.
Are your bushings already shot?
A simple test to determine if the stock rear trailing arm bushings require replacement is driving the vehicle in a straight line. While in gear, under full acceleration, does the car pull to one side? Additionally, under full, firm application of the brakes, does the car pull again? If you answered yes to either one, the bushings probably require replacement.
Rogue Engineering Performance RTABs
The bushing material used in Rogue Engineering Performance RTABs are now available in two different compounds, specifically for your needs. Both compounds now incorporate a silicone impregnated, polyurethane compound. The biggest different being the hardness of the material.
1. Blue Compound - This harder compound is designed for TRACK applications, where monoball components are not allowed. Less expensive than full Delrin bushings, these bushings are extremely stiff to provide the absolute maximum performance at the TRACK. Purposefully engineered to approximately Shore D 65 hardness. Please note, because of hardness of this compound, these can transmit more noise, vibration, and harshness.
2. Black Compound -This compound is formulated for STREET applications. Softer than the blue, TRACK compound, these are stiffer than stock factory OEM bushings, and designed to last much longer than stock. Since these are the great compromise between OEM and our TRACK bushing. Engineered to approximately Shore A 93 hardness.
RACE/TRACK
Our RACE/TRACE application uses a race-quality, high-load spherical bearing in a CNC'd machined aluminum housing. This part eliminates ALL deflection in the rear trailing arm.
This hardness is important in this bushing especially in modified vehicles, since they will exert more force on the rear suspension during acceleration.
The inner sleeve that supports the bushings is made from 6061-T6 aluminum, CNC'd to exacting specifications for a perfect fit.
Do NOT confuse these bushings with bushings produced outside of the US, with unknown material hardness. We have installed similar bushings produced by other companies which are simply too soft. In these cases, it would have been better if stock bushings were used since it allows too much movement of the rear trailing arm.
Squeak, Squeak. What was that noise?
Our US manufacturer has has offered us a silicon based formula, to also keep the urethane bushings quiet during use. Approximately 1.3 oz. of silicon is poured into the mold, which means that it is permanently impregnated into each bushing. This process costs more to produce, but we feel that it makes for a better product in the long run.
A common downside of the urethane bushings over stock rubber ones was that they would typically develop noise over time (or even right away). These noises were from a combination of the harder material, inadequate lubrication (or none at all), and the contact with the factory steel mounting hat rubbing against the bushing.
Professional Installation Required
Because the RTAB "console" removal is required, an alignment is recommended. For installation of the part itself, it is very straightforward, but requires some special tools. We recommend grease that has PTFE in it. A favorite in our shop is SUPERLUBE.
Fits the following vehicles:
All E36, including M3. Does NOT fit Z3 and 318ti.
All E46, including M3.
All Z4
PLEASE SPECIFY BLUE OR BLACK VERSION WHEN ORDERING.
Estimated Volumetric Shipping Weight : 10.00 Kg
Rouge Engineering Blue (track - race) or black (street - track) uprated rear trailing arm bushes.
**THIS PAGE LISTS THE STREET / TRACK (BLACK) VERSION BUSHES, PLEASE USE RED "VARIATIONS" BUTTON TOP RIGHT OF THIS LISTING TO SEE THE TRACK / RACE (BLUE) VERSION.
Problems with Factory Mounts:
The factory BMW RTABs (Rear Trailing Arm Bushings) are a very soft material to provide the quietest, most comfortable ride possible. Because of this, we have seen factory mounts require replacement in less than 50,000 miles and 3 years. On modified vehicles, expect them to require replacement sooner.
Are your bushings already shot?
A simple test to determine if the stock rear trailing arm bushings require replacement is driving the vehicle in a straight line. While in gear, under full acceleration, does the car pull to one side? Additionally, under full, firm application of the brakes, does the car pull again? If you answered yes to either one, the bushings probably require replacement.
Rogue Engineering Performance RTABs
The bushing material used in Rogue Engineering Performance RTABs are now available in two different compounds, specifically for your needs. Both compounds now incorporate a silicone impregnated, polyurethane compound. The biggest different being the hardness of the material.
1. Blue Compound - This harder compound is designed for TRACK applications, where monoball components are not allowed. Less expensive than full Delrin bushings, these bushings are extremely stiff to provide the absolute maximum performance at the TRACK. Purposefully engineered to approximately Shore D 65 hardness. Please note, because of hardness of this compound, these can transmit more noise, vibration, and harshness.
2. Black Compound -This compound is formulated for STREET applications. Softer than the blue, TRACK compound, these are stiffer than stock factory OEM bushings, and designed to last much longer than stock. Since these are the great compromise between OEM and our TRACK bushing. Engineered to approximately Shore A 93 hardness.
RACE/TRACK
Our RACE/TRACE application uses a race-quality, high-load spherical bearing in a CNC'd machined aluminum housing. This part eliminates ALL deflection in the rear trailing arm.
This hardness is important in this bushing especially in modified vehicles, since they will exert more force on the rear suspension during acceleration.
The inner sleeve that supports the bushings is made from 6061-T6 aluminum, CNC'd to exacting specifications for a perfect fit.
Do NOT confuse these bushings with bushings produced outside of the US, with unknown material hardness. We have installed similar bushings produced by other companies which are simply too soft. In these cases, it would have been better if stock bushings were used since it allows too much movement of the rear trailing arm.
Squeak, Squeak. What was that noise?
Our US manufacturer has has offered us a silicon based formula, to also keep the urethane bushings quiet during use. Approximately 1.3 oz. of silicon is poured into the mold, which means that it is permanently impregnated into each bushing. This process costs more to produce, but we feel that it makes for a better product in the long run.
A common downside of the urethane bushings over stock rubber ones was that they would typically develop noise over time (or even right away). These noises were from a combination of the harder material, inadequate lubrication (or none at all), and the contact with the factory steel mounting hat rubbing against the bushing.
Professional Installation Required
Because the RTAB "console" removal is required, an alignment is recommended. For installation of the part itself, it is very straightforward, but requires some special tools. We recommend grease that has PTFE in it. A favorite in our shop is SUPERLUBE.
Fits the following vehicles:
All E36, including M3. Does NOT fit Z3 and 318ti.
All E46, including M3.
All Z4
PLEASE SPECIFY BLUE OR BLACK VERSION WHEN ORDERING.
Estimated Volumetric Shipping Weight : 10.00 Kg