SKU: 93830167215

034Motorsport 1-Piece, Pinned & Unpinned Crank Hub w/ Crank Bolt Capture Plate - BMW N55 & S55

Sale price$530.71 Regular price$589.68
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Description

034Motorsport 1-Piece, Pinned & Unpinned Crank Hub w/ Crank Bolt Capture Plate - BMW N55 & S55The BMW N55 and S55 platforms deliver incredible performance, but their factory multi piece crank hubs are a known weak point capable of catastrophic timing drift or total failure. The 034Motorsport 1 Piece Pinned Unpinned Crank Hub with Crank Bolt Capture Plate is engineered as a complete, motorsport grade solution that eliminates slip, locks in long term reliability, and protects your engine under the highest levels of power and abuse. Unmatched

The BMW N55 and S55 platforms deliver incredible performance, but their factory multi-piece crank hubs are a known weak point capable of catastrophic timing drift or total failure. The 034Motorsport 1-Piece Pinned/Unpinned Crank Hub with Crank Bolt Capture Plate is engineered as a complete, motorsport-grade solution that eliminates slip, locks in long-term reliability, and protects your engine under the highest levels of power and abuse.

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

 

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SKU: 93830167215

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Adam
New York, US
★★★★★ 3
Knowledgeable History; Uncharitable Theological Commentary
Format: Kindle
The author seems incredibly knowledgeable about the topic. I am learning a tremendous amount about the period bridging the Old and New Testament periods by reading this book. However, it is incredibly frustrating to me that the author compares modern day fellow-Christian cessationists with the unbelieving Sanhedrin whom Stephen excoriated in Acts chapter 7. "The insinuation is that the Holy Spirit, which had inspired the Torah, was the very same spirit who had been prophetically active down to the time of Jesus but whom the Jewish leaders were now railing against. One wonders what words Stephen would have for modern readers who perpetuate the notion of prophetic silence." At first this passage irritated me as an unnecessary and uncharitable jab. But I decided to write a review to let readers know to be prepared: if you do not have a Grudem-style view of ongoing prophecy, you should expect the author of this book to take cheap and uncharitable jabs, and to compare you to unbelieving Jews who rejected God's word. It actually colors my ability to take the author seriously, though I paid far too much for this book not to persevere through it. The author could have chosen to take an objective and charitable stance and simply report the facts. I'm surprised an editor didn't encourage the author to restrain his criticisms.
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Mary B. Peterson
Bozeman, US
★★★★★ 5
a true blessing for Scriptural insight into God’s eternal plan !!
Format: Paperback
This book was extremely informative and helpful in understanding the Scriptures!!! Not only that, it was hopeful and reassuring for the future!! I am so glad i bought this book!!
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Reviewed in the United States on March 20, 2026
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Connie & Herman Lamp
Boise, US
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I read all his books. Good prices at Amason
Format: Hardcover
Good book. Easy to read. Good price.
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William J Hutto
Fort Morgan, US
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Good book to study inm Bible Study
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I tought through this book in my Bible study class at our church. Everyone thought it was great. we had some good discussions about each lesson.
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Chelsea, US
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This book should be mandatory reading. It is a blessing, as are all of David Jeremiah’s books. Glad I was able to locate it at Amazon.
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Reviewed in the United States on May 11, 2026

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