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BMW E81 / E82 / E87 / E88 1 Series, E90 / E91 / E92 / E93 3 Series & E84 X1 Rear Trailing Arm Monoball Bearing Set 2005 - 2015 (Replaces 33326763092)
SKU: 1005010108270127
Sale price
$159.99 USD
Regular price
$174.00 USD
Shipping calculated at checkout.
Eliminate the rear suspension deflection plaguing your BMW E9X / E8X chassis with this premium rear trailing arm monoball bearing set, precision manufactured from 40Cr alloy steel for permanent durability and dramatically improved suspension precision. The BMW E90 / E91 / E92 / E93 / E81 / E82 / E87 / E88 / E84 rear suspension uses a complex five-link geometry where the trailing arm connects the subframe to the main axle through factory rubber bushings — and these factory bushings are notorious for deforming under aggressive driving loads, causing dramatic changes in toe and camber geometry during braking, acceleration, and cornering that result in handling instability, rear-end deflection, and unpredictable behavior at the limit. This monoball bearing upgrade replaces the compliant factory rubber bushings with rigid spherical bearings that maintain consistent suspension geometry under all driving loads, delivering precision handling, sharper steering response, and clearer road feedback for drivers who demand serious performance from their BMW chassis.
Features:
- Precision-machined monoball bearings – sized identically to factory bushings for non-destructive replacement using proper tools
- Premium 40Cr alloy steel construction – delivers exceptional strength, durability, and consistent geometry control under sustained suspension loads
- Dust cover seal design – keeps debris out and locks lubrication grease in for extended service life and reduced wear compared to bare spherical bearings
- Precision handling improvement – stabilizes camber and toe geometry during cornering, acceleration, and braking for sharper steering response
- Direct road feedback – monoball geometry transfers spring and damper forces to the ground without rubber bushing compliance lag
- Low NVH increase – engineered specifically for quiet, daily-drivable operation with minimal harshness compared to typical full-bearing alternatives
- Complete 4-piece set – addresses both rear trailing arm bearing positions for a coordinated suspension upgrade
Specifications:
- Condition: 100% Brand New
- Type: Rear Trailing Arm Monoball Bearing Set
- Material: 40Cr Alloy Steel
- Sealing: Dust Cover Seal Design
- Item Weight: 1.121 kg
- Quantity: 4 monoball bearings per set
- Position: Rear Trailing Arm
- Recommended Use: Street Performance
- NVH Increase: Low
- Purpose: Performance Upgrade / Suspension Geometry Stabilization
OE / Replacement Part Numbers:
- 33326763092 / 33 32 6 763 092
Fitment:
- BMW 1 Series: E81 / E82 / E87 / E88 (2005 – 2013)
- BMW 3 Series: E90 / E91 / E92 / E93 (2005 – 2013)
- BMW X1: E84 (2010 – 2015)
- Compatible with factory rear trailing arm mounting points only – verify your factory bushing part number (33326763092) before ordering
- Confirm vehicle model, chassis code, and production year before ordering
Contents:
- 4x Rear Trailing Arm Monoball Bearings (with Dust Cover Seals)
Benefits:
- Permanently eliminates the rear suspension deflection caused by deformed factory rubber bushings – a known weak point of the E9X / E8X chassis under aggressive driving
- Maintains consistent rear toe and camber geometry under braking, acceleration, and cornering loads – critical for predictable handling at the limit
- Sharpens steering response by eliminating rubber bushing compliance lag – every steering input transfers directly to the rear suspension without delay
- Improves road feedback through the chassis – drivers feel surface conditions and grip levels more clearly, enabling better driver inputs
- 40Cr alloy steel construction delivers significantly higher strength than factory rubber alternatives, eliminating the recurring failure mode of compliance bushings
- Dust cover seal design provides extended service life compared to bare monoball bearings, with reduced wear and noise development over time
- Engineered for low NVH increase – maintains daily driveability and ride comfort while delivering meaningful performance improvements
- Significant cost savings compared to high-end aftermarket spherical bearing kits while delivering equivalent performance benefits
Installation Notes:
- Specialized tools required: Trailing arm bushing replacement requires a hydraulic press or proper bushing extraction/installation tools – do not attempt installation without correct equipment
- Vehicle wheel alignment is mandatory after installation – trailing arm bearing replacement directly affects rear toe and camber specifications
- Replace bearings on both left and right sides simultaneously to maintain consistent rear suspension geometry – installing on only one side will cause asymmetric handling
- Apply manufacturer-specified grease to the monoball bearings during installation – do not run bearings dry, as this will accelerate wear and cause noise
- Inspect surrounding suspension components during installation – worn trailing arms, sway bar links, or other rear suspension components will compromise the performance benefits of upgraded bearings
- Bed in the new bearings with progressively increased driving loads over the first 100-200 miles before aggressive driving
- Professional installation strongly recommended – rear trailing arm service requires suspension geometry knowledge and proper torque specifications
- If unsure about compatibility with your specific BMW variant or chassis code, contact our team with your year, model, and chassis code (E81 / E82 / E87 / E88 / E90 / E91 / E92 / E93 / E84) before ordering
Warranty:
- 12-month standard warranty from date of purchase
- Contact our support team for assistance with any issues
K2 Industries & OUR OWN FAQ's
How do I check fitment?
Check the listing for your year, make, model, trim and engine. Body style, build date and factory options can matter. If the listing is unclear, send FI Performance your vehicle details and the product link or SKU before ordering.
What comes with this part?
Check the product description for quantities, hardware and accessories. Photos may show the part installed with other components. Ask us if you need to confirm whether a part is sold individually, as a pair or as a kit.
Will I need extra parts or modifications?
That depends on the part and your setup. Check for adapters, wiring, coding, tuning, trimming or additional hardware before booking installation. If you already have aftermarket parts, tell us what’s installed.
What should I check for headlights or tail lights?
Match your factory lighting type, connector and body style. Halogen, HID and LED assemblies can differ even on the same model. Check pre-facelift versus facelift fitment and features such as adaptive lights or leveling.
Should I have a shop install it?
We recommend a qualified installer for wiring, engine, brake and suspension work. Inspect the part and confirm fitment before cutting, drilling, painting or modifying anything.
When will my order ship?
Availability and lead time vary by item. If you’re working around a shop appointment or event, contact FI Performance for a current estimate before ordering.
How do returns and warranty claims work?
Contact FI Performance with your order number before sending anything back. Eligibility depends on the item, its condition and the applicable policy. If there’s damage or a defect, keep the packaging and send photos of the part, label and issue.
Is this part intended for street use?
Check the listing for any use restrictions and confirm the requirements where you drive. If you need a specific approval or certification, ask us to verify it for the exact part number before ordering.
Why should I buy from FI Performance?
FI Performance is a USA-based team of automotive enthusiasts focused on quality, reliability and helpful support. We work closely with manufacturers and can help guide your build from product selection through order support.
How can I contact customer support?
Reach FI Performance by live chat, email or phone for product questions, order help and automotive guidance.
What parts are best for my car and goals?
Tell FI Performance your vehicle, intended use and goals. We can help narrow down the right parts and put together a practical modification plan for your build.
Do you offer financing options?
Eligible financing options are shown at checkout. Select the available financing method during checkout to review payment terms and monthly-payment options.
How do I track my order?
When your order ships, FI Performance sends tracking information by email so you can follow delivery progress and view the estimated arrival date.
What payment methods do you accept?
FI Performance accepts major credit cards, PayPal and any financing options displayed at checkout.
How do I know if I have factory Xenon lighting?
Factory Xenon lights commonly have a blue-tinted output and a short warm-up period. Check your owner's manual or send FI Performance your vehicle details so we can help confirm your factory lighting type.
What is the difference between Halogen, HID and LED lighting?
Halogen lighting is the traditional, affordable option. HID lighting typically provides greater brightness, while LED lighting is energy-efficient and long-lasting. FI Performance can help you select the correct option for your vehicle.
How do I prevent lighting condensation?
Condensation can occur as temperatures change. Lighting assemblies are designed to minimize it; contact FI Performance for guidance if you see persistent condensation or have product-specific questions.
How do I check fitment?
Check the listing for your year, make, model, trim and engine. Body style, build date and factory options can matter. If the listing is unclear, send FI Performance your vehicle details and the product link or SKU before ordering.
What comes with this part?
Check the product description for quantities, hardware and accessories. Photos may show the part installed with other components. Ask us if you need to confirm whether a part is sold individually, as a pair or as a kit.
Will I need extra parts or modifications?
That depends on the part and your setup. Check for adapters, wiring, coding, tuning, trimming or additional hardware before booking installation. If you already have aftermarket parts, tell us what’s installed.
What should I check for headlights or tail lights?
Match your factory lighting type, connector and body style. Halogen, HID and LED assemblies can differ even on the same model. Check pre-facelift versus facelift fitment and features such as adaptive lights or leveling.
Should I have a shop install it?
We recommend a qualified installer for wiring, engine, brake and suspension work. Inspect the part and confirm fitment before cutting, drilling, painting or modifying anything.
When will my order ship?
Availability and lead time vary by item. If you’re working around a shop appointment or event, contact FI Performance for a current estimate before ordering.
How do returns and warranty claims work?
Contact FI Performance with your order number before sending anything back. Eligibility depends on the item, its condition and the applicable policy. If there’s damage or a defect, keep the packaging and send photos of the part, label and issue.
Is this part intended for street use?
Check the listing for any use restrictions and confirm the requirements where you drive. If you need a specific approval or certification, ask us to verify it for the exact part number before ordering.
Why should I buy from FI Performance?
FI Performance is a USA-based team of automotive enthusiasts focused on quality, reliability and helpful support. We work closely with manufacturers and can help guide your build from product selection through order support.
How can I contact customer support?
Reach FI Performance by live chat, email or phone for product questions, order help and automotive guidance.
What parts are best for my car and goals?
Tell FI Performance your vehicle, intended use and goals. We can help narrow down the right parts and put together a practical modification plan for your build.
Do you offer financing options?
Eligible financing options are shown at checkout. Select the available financing method during checkout to review payment terms and monthly-payment options.
How do I track my order?
When your order ships, FI Performance sends tracking information by email so you can follow delivery progress and view the estimated arrival date.
What payment methods do you accept?
FI Performance accepts major credit cards, PayPal and any financing options displayed at checkout.
How do I know if I have factory Xenon lighting?
Factory Xenon lights commonly have a blue-tinted output and a short warm-up period. Check your owner's manual or send FI Performance your vehicle details so we can help confirm your factory lighting type.
What is the difference between Halogen, HID and LED lighting?
Halogen lighting is the traditional, affordable option. HID lighting typically provides greater brightness, while LED lighting is energy-efficient and long-lasting. FI Performance can help you select the correct option for your vehicle.
How do I prevent lighting condensation?
Condensation can occur as temperatures change. Lighting assemblies are designed to minimize it; contact FI Performance for guidance if you see persistent condensation or have product-specific questions.
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