This is a Universal Fitting Product
This Part Fits Your Vehicle
Product Information
Unmatched Engineering. Zero Compromise:
A Permanent Fix for the Factory Crank Hub Problem
The factory crank hub used in BMW’s N55 and S55 engines is a well-known weak point, particularly as power levels increase. The OEM design uses three individual sprocketed pieces that drive the timing chains off the crankshaft. Importantly, none of these sprockets are mechanically linked together nor to the crankshaft . They rely only on friction washers and the clamping force of the crank bolt to stay aligned.
Under higher horsepower, rapid throttle transitions, hard launches, or even completely stock operation, the friction surfaces can slip. When this happens, the timing components rotate out of alignment, causing the engine to fall out of mechanical timing. This can quickly lead to bent valves, piston-to-valve contact, or catastrophic engine failure.
A True Mechanical Solution Instead of More Friction:
The 034Motorsport 1-Piece Pinned Crank Hub replaces the entire multi-piece factory stack with a single CNC-machined billet EN36 steel unit. By combining all timing sprockets into one rigid body, every driven timing component remains physically linked, eliminating the possibility of internal hub slip.
You can configure the hub in the way that best suits your build:
Unpinned Installation
The 034 design can be installed in an unpinned configuration using the factory crankshaft with no drilling required. This setup works seamlessly with the included Crank Bolt Capture Plate, which locks the crank bolt in position and prevents any chance of bolt movement.
Pinned Installation (Recommended for Heavy Abuse/High Power)
For those who want maximum mechanical security, the hub can also be installed in a 4-pin configuration, physically interlocking it with the crankshaft. One of the key advantages of the 034Motorsport Crank Hub is that it eliminates the need for a separate hub version. You can choose pinned or unpinned using the same part.
To ensure safe and accurate drilling, the kit includes a carbide drill bit and a dedicated drill guide and alignment jig. Most competing kits only provide a high-strength steel drill bit, which wears quickly when cutting into the crankshaft.
Crank Bolt Capture Plate: The Second Layer of Defense
Machined from 6061-T6 billet aluminum and anodized for long-lasting protection, the Capture Plate surrounds and locks the OE crank bolt in place, preventing any possibility of bolt walk-out. Paired with the 1-Piece Hub, this configuration eliminates both crank bolt and crank hub slip, protecting against the most common N55/S55 timing failures.
Elongated mounting slots allow the Capture Plate to be used with both OE and 034Motorsport crank hubs, ensuring a precise and secure installation.
Built to Protect Your Engine, No Matter the Power Level:
From aggressively tuned street builds to fully track-prepped cars, the 034Motorsport 1-Piece Pinned Crank Hub and Capture Plate system is engineered to be the definitive solution for securing the crank hub. With uncompromising materials, precision engineering, and a complete installation package, this upgrade delivers the reliability and confidence your BMW deserves.
Upgrade once. Protect forever.
1-Piece Crank Hub Features:
- 1-Piece CNC-Machined Hub, Installable In 4-Pin Or Unpinned Configuration
- Prevents Crank Hub Slip And Failure On High-Power Engines
- Billet EN36 Steel, Heat-Treated With 0.75 Mm Case Hardening
- High-Strength Design Built For Extreme Power And Abuse
- Optional Precision Dowels Mechanically Lock Hub To Crank (Crank Drilling Required)
- Complete Installation Kit: Jig, Guide, Locating Bolt, And Carbide Drill Bit
- Includes New OE Crank Bolt
Crank Bolt Capture Plate Features:
- Machined From 6061-T6 Billet Aluminum
- Anodized For Durability And Long-Lasting Finish
- Surrounds And Locks OE Crank Bolt, Preventing Loosening
- Fits 034Motorsport Or OE Crank Hub With Elongated Slots For Secure Install
- Prevents 3-Piece Crank Hub Slip On S55 And N55 Engines
- Installs With Engine In-Situ By Dropping Radiator For Access
What's Included:
- 034Motorsport 1-Piece Pinned & Unpinned Crank Hub With Crank Bolt Capture Plate - BMW N55/S55
NOTE: Product images shown may not be an exact representation of the actual product.
Model + ![]() |
Drivetrain ![]() |
|---|---|
| E70 xDrive35i 3.0T I6 [N55] | + |
| E71 35i 3.0T I6 [N55] | |
| E84 X1 xDrive35i 3.0T I6 [N55] | + |
| E90 335i 3.0T I6 [N55] | + |
| E91 335i 3.0T I6 [N55] | + |
| E92 335i 3.0T I6 [N55] | + |
| E93 335i 3.0T I6 [N55] | + |
| F01 740i 3.0T I6 [N55] | + |
| F01 740Li 3.0T I6 [N55] | + |
| F02 740i 3.0T I6 [N55] | + |
| F02 740Li 3.0T I6 [N55] | + |
| F06 640i 3.0T I6 [N55] | + |
| F07 535i GT 3.0T I6 [N55] | + |
| F10 535i 3.0T I6 [N55] | + |
| F10 ActiveHybrid 5 3.0T I6 [N55] | + |
| F11 535i 3.0T I6 [N55] | |
| F12 640i 3.0T I6 [N55] | + |
| F13 640i 3.0T I6 [N55] | + |
| F15 X5 xDrive35i 3.0T I6 [N55] | + |
| F16 X6 xDrive35i 3.0T I6 [N55] | + |
| F25 xDrive35i 3.0T I6 [N55] | + |
| F26 X4 xDrive35i 3.0T I6 [N55] | |
| F30 335i 3.0T I6 [N55] | + |
| F32 435i 3.0T I6 [N55] | + |
| F80 M3 3.0T I6 [S55] | + |
| F80 M3 CS 3.0T I6 [S55] | + |
| F82 M4 3.0T I6 [S55] | + |
| F82 M4 Comp 3.0T I6 [S55] | + |
| F82 M4 CS 3.0T I6 [S55] | + |
Return and Exchange Policy
The Return & Exchange Policy below outlines our current terms. While we try to adhere strictly to the guidelines detailed below, there are always exceptions to the rules, please speak to a BMP Tuning Customer Support Representative for clarification on anything you might have questions about - contact us.
Order Cancellations
Order Cancellation Hours of Operation
- All order cancellations are processed during regular business hours only. Any order cancellation requests made outside of normal business hours will be processed during the next business day.
Order Cancellation Fees
- Any cancelled orders including orders that have not shipped will be subject to a 5% cancellation fee to offset order processing fees that are not refunded to BMP Tuning by financial institutions and fee is waived completely if store credit is requested.
- Cancellation fee applies to any order regardless of stock status, please contact BMP Tuning if there are any questions regarding stock status before placing an order.
- If an order has already been processed or shipped and BMP Tuning is unable to cancel the order, the customer will be responsible for returning the item to us once received. Once the return is received it will be processed like any other return and be subject to the "Return and Exchange Policy" listed below.
- Certain products sold cannot be cancelled after the order has been placed due to agreements with the manufacturer, or in the case of made to order/custom items. This may be noted in the product description, but feel free to contact us to make sure before ordering.
- Any order placed via Katapult are non-refundable; refunds, if required, will be issued via store credit only.
Return & Exchange Policy
Domestic Orders
- BMP Tuning will accept returns for unused products within 1 year/365 Days from the date of purchase.
- Returned products must be new, unused, and must be in the original packaging, including labeling, manuals, hardware, etc. Special order items are non-refundable.
- Returns will NOT be processed for any received products without the proper RMA Form completed and included with the return, customer will also be responsible for return shipping to their original shipping address.
- Returns beyond 60 days of original purchase once processed can only be refunded as BMP Tuning store credit.
- In the case of an exchange, BMP Tuning will waive normal restocking fees and only collect for original shipping of the returned product unless otherwise stated by a BMP Tuning Customer Service Representative when requesting your RMA number.
- Once store credit has been issued for a return, it is final and cannot be reversed or exchanged for a refund to your original payment method at a later time. Please ensure you are comfortable with receiving store credit before completing your return.
- Contact us within 7 days of delivery if an item has arrived damaged or incorrectly so that we can rectify the situation with the responsible party. Any notifications past 7 days from delivery could cause issues with replacement and BMP Tuning is not liable for any mis-shipments or damaged items if notified past the 7th day.
- Once delivered to shipping address provided, packages are customer’s responsibility—consider requesting a signature upon delivery or insuring your order with Route.
International Orders
- New, unopened products can be returned within 60 days of purchase.
- Opened/used products and Scratch & Dent parts cannot be returned.
- Contact us within 7 days if your item is damaged upon receipt.
- Once delivered, packages are customer’s responsibility—signature confirmation is available upon request.
- Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.
Return Fees & Shipping:
- Customer is responsible for a 20% restocking fee, original shipping, and return shipping.
- In instances where the customer received FREE shipping, the shipping amount that BMP Tuning paid on behalf of the customer will be deducted from the total refund.
- BMP Tuning's restocking fee is waived in the instance customer requests store credit as long as the item is being returned to BMP Tuning and not the manufacture directly.
- Any orders that are returned to BMP Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our "Return and Exchange Policy", including a 20% restocking fee.
- Any returns that are denied for any reason will be sent back to the customer at the customers expense. Any denied return left with BMP Tuning longer than 30 days is considered forfeited by the customer and will be disposed of by BMP Tuning at BMP Tuning's discretion.
- Any order placed via Katapult are non-refundable; refunds, if required, will be issued via store credit only.
Route Shipping Protection - Refunds & Cancellations
- Route shipping protection is an insurance purchased for your shipment. Because of this, any protection on items that have already been shipped cannot be refunded.
- If your order is cancelled PRIOR to the items shipping, then the Route purchase can be refunded with the cancelled item(s). Once the order has shipped, we cannot refund the Route shipping protection.
Tariffs & Duties – No Refund Upon Return
- BMP Tuning is not responsible for any tariffs, duties, or import fees charged by customs authorities or shipping carriers.
- If you return an item, any tariff or duty you paid at delivery will not be refunded by BMP Tuning, as those are non-refundable government charges.
- Refunds for returned items will be limited to the cost of the product (minus applicable fees), not including any tariffs or duties originally paid.
- Please ensure you understand your country’s import fee obligations prior to ordering.
- If you have questions about potential tariffs, duties, or returns, contact us before placing your order—we’re happy to assist.
- All existing policy conditions (restocking fees, RMA requirement, return shipping responsibilities) still apply as stated in the original policy.
Product Return Exemptions
Tuning Software And Cables
BMP Tuning will NOT accept returns for any tuning software or tuning cables. This includes, but is not limited to:
- ECU Tunes
- TCU Tunes
- Tuning Cables such as IE POWERlink V4 Flash Cable, APR Ultralink, Unitronic UniCONNECT+ Cable, 034Motorsport Dynamic+ Tuning Cable
- Plug and Play Tuners such as Burger Motorsports JB4, COBB AccessPort
- OBDEleven Pro
Scratch & Dent, Open Box, and Clearance Items
There are absolutely no returns on any product sold as "Scratch & Dent", "Open Box", or "Clearance."
Pricing Or Photo Errors
- While we always try to provide the most accurate product and pricing information, we are humans and can make mistakes. If we listed an incorrect price or information for any product on our site, BMP Tuning reserves the right to refuse or cancel any orders placed. PRICING AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE.
- We try to ensure that all products are represented properly in description and photo. However, due to photos provided from manufacturers, sometimes a photo might be outdated or a generic photo for the part may be used for the item. If you have any questions about any product, please contact us before placing your order.
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