For BMW S55 and N55 engine owners, there's nothing more frustrating than the constant worry about your crank hub backing out. We've all heard the horror stories—24 bent valves, catastrophic engine failure, and thousands in repair bills. But what if you could eliminate that risk with a simple, affordable solution?
High-performance S55 and N55 engines are notorious for crank hub issues. When the crank bolt backs out, it can cause the hub to spin, leading to valve damage and complete engine failure. This isn't just a minor inconvenience—it's a potentially engine-ending problem that can leave you stranded with a massive repair bill.
Enter the VTT S55/N55 Crank Bolt Capture. This ingeniously simple device slips directly over the head of your crank bolt, fully encapsulating it and locking it securely to the crank hub. Once installed, the bolt cannot back out, no matter how much power you're making or how hard you drive.
Crafted from 100% billet aircraft-grade aluminum and anodized black for both protection and a stealth appearance, this capture is built to last. What's remarkable is how lightweight it is—at just 1.3 ounces, it adds virtually no weight to your rotating assembly, maintaining perfect balance and preventing any vibration issues.
Installation is straightforward and can be done by most enthusiasts in minutes. Simply slip the capture over the crank bolt head and secure it in place. While this isn't a complete fix for all crank hub spinning issues, it addresses the most common cause—the bolt itself backing out.
In a small number of installations, the capture may not align perfectly with the crank bolt and damper bolts. If this occurs, simply add a little extra stretch to the bolt or install a new bolt with correct clocking to ensure proper fit.
Don't let the fear of crank hub issues hold you back from enjoying your BMW's performance. This simple, affordable modification provides the peace of mind you need to push your engine to its full potential without worrying about catastrophic failure.
