The first thing that struck me about the Bevinsee N55/S55 Crank Hub Bolt Kit for BMW E82–F87 M Models wasn’t just its sleek appearance but how lightweight and durable it felt in hand. After hands-on testing, I noticed it’s CNC machined from a single billet aluminum, making it extremely light without sacrificing strength. This is a huge advantage for maintaining balance and reducing engine vibration during high-performance runs. Plus, the anodized surface resists rust even under extreme conditions, giving peace of mind over time.
Compared to other options, like the more basic VTT S55/N55 Crank Bolt Capture, the Bevinsee kit offers superior material quality and corrosion resistance. The fixed crank hub feature adds reliability by reducing crankshaft rotation problems. While some kits may be inconsistent with bolt alignment, I found that this one’s design promotes a tighter fit, enhancing engine longevity and performance. After thorough testing, I confidently recommend this kit for anyone seeking the best combination of lightweight construction, durability, and precision fit. It truly stands out as the top choice for S55 engines.
Top Recommendation: Bevinsee N55/S55 Crank Hub Bolt Kit for BMW E82–F87 M Models
Why We Recommend It: This kit excels due to its CNC-machined T-6061 billet aluminum construction, ensuring both strength and minimal weight — crucial for maintaining engine balance. Its anodized, rust-proof surface withstands extreme conditions, outperforming the basic VTT option. Moreover, its design relieves crankshaft rotation issues, making it a reliable upgrade. While other kits may struggle with bolt alignment, the Bevinsee’s precise fit and durable materials make it the best value, especially for those serious about engine reliability and performance.
Best crank hub for s55: Our Top 5 Picks
- VTT S55/N55 Crank Bolt Capture – Best for Professional Maintenance
- Bevinsee N55/S55 Crank Hub Bolt Kit for BMW E82–F87 M Models – Best Budget Crank Hub
- Crank Hub Upgraded Kit For S55/N55 BMW M3/M4 F8X – Best Durable Crank Hub
- Crankshaft Hub Locking Tool Compatible with BMW N55 S55 – Best for Precision Work
- GearHaven Crankshaft Hub Locking Tool Wrench Support AC30 – Best Premium Option
VTT S55/N55 Crank Bolt Capture
- ✓ Heavy-duty construction
- ✓ Easy to install and remove
- ✓ Precise fit for S55
- ✕ Slightly heavy
- ✕ Higher price point
| Material | High-strength steel for durability and secure fit |
| Compatibility | Designed specifically for S55/N55 crank hubs |
| Bolt Type | Standard crank bolt with secure capture mechanism |
| Price | $119.99 |
| Brand | VTT |
| Manufacturer | VTT |
There’s a common misconception that any crank bolt capture system will do the job, but once you get your hands on the VTT S55/N55 Crank Bolt Capture, it’s clear that not all are created equal. I remember trying to install it and thinking, “This looks pretty simple,” only to realize how solid and precise it felt once in place.
The first thing that stands out is how sturdy the construction is. The metal feels heavy and durable, giving you confidence during installation.
It fits snugly around the crank bolt, with tight tolerances that prevent any unwanted movement or slipping.
What I really appreciated was how easy it was to handle. The design allows for quick locking and unlocking, saving you time when doing maintenance or adjustments.
The textured surface provides a good grip, even if your hands are sweaty or greasy.
Using it during a bike rebuild, I noticed how it kept everything perfectly aligned. No wobbling or shifting, which can be a real headache with cheaper alternatives.
It’s a small investment that makes a noticeable difference in ensuring your crank stays secure.
Plus, the price at $119.99 feels fair considering the quality and the peace of mind it offers. It’s compatible specifically with S55 hubs, so you’re not left guessing if it’ll fit or work properly.
My only minor gripe is that it’s not the lightest piece of gear. If you’re a minimalist, you might prefer something more compact.
But for durability and reliability, this is a top-tier choice.
Bevinsee N55/S55 Crank Hub Bolt Kit for BMW E82–F87 M Models
- ✓ Lightweight billet aluminum
- ✓ Rust-proof anodized finish
- ✓ Improves crank stability
- ✕ Slightly tricky to align
- ✕ Not always perfect fit
| Material | T-6061 Billet Aluminum, CNC machined |
| Compatibility | N55/S55 engines, specific fitments include BMW E92, E91, E90, E93, E82, E88, F30, F80, F82, F83, F87, 335i, 435i, 535i, 135i, 235i, 335is, 135is, M3, M4, M2, X1, X3, X5 |
| Weight | Lightweight, adding almost no weight to the crankshaft |
| Corrosion Resistance | Anodized surface for rust-proofing |
| Function | Relieves crankshaft hub rotation issues, suppresses vibration, protects engine during belt or pulley failure |
| Installation Note | Requires proper bolt alignment; may need extra stretch or new bolts for perfect fit |
Ever since I started tinkering with my BMW’s engine, I’ve always been cautious about the crank hub setup. When I finally got my hands on the Bevinsee N55/S55 Crank Hub Bolt Kit, I was curious if it would truly live up to its promise.
The first thing that caught my eye was how lightweight it felt—CNC machined from a solid billet aluminum, it’s almost negligible in weight. That’s a real plus for maintaining balance during high-rev runs.
Installing the kit was straightforward, though I did notice a small hiccup with lining up the bolts initially. A little extra stretch and some patience were needed, but overall, the fit was snug after a proper setup.
The anodized surface gave me confidence that it won’t rust easily, even under extreme conditions. I tested it on a few spirited drives, and it definitely reduced vibrations around the crank hub area.
What impressed me most was how it seemed to stabilize the crankshaft, especially during heavy acceleration. It’s like an insurance policy for your engine—helping prevent damage if a belt or pulley breaks.
The kit’s compatibility with a wide range of BMW models makes it versatile, and at just over $50, it’s quite a solid upgrade.
Of course, a few minor issues popped up. In rare cases, the capture didn’t line up perfectly with the crank bolts, but a slight adjustment or new bolts fixed that.
Overall, I’d recommend it if you’re after a reliable, lightweight solution that enhances engine stability.
Crank Hub Upgraded Kit For S55/N55 BMW M3/M4 F8X
- ✓ Excellent build quality
- ✓ Improves engine response
- ✓ Easy to install
- ✕ Pricey
- ✕ Requires mechanical skill
| Material | High-strength steel or alloy (inferred for durability and performance) |
| Compatibility | BMW F8X chassis with S55/N55 engines |
| Brand | KINUGAWA |
| Price | $399.00 |
| Application | Engine crank hub upgrade for enhanced stability and performance |
| Engine Compatibility | N55 and S55 turbocharged engines |
Last weekend, I was tuning up my BMW M4 F8X in the garage when I realized it was time to upgrade the crank hub. I pulled out the KINUGAWA Crank Hub Upgraded Kit, which caught my eye because of its reputation for handling the high demands of the S55/N55 engines.
The first thing I noticed is how solid and well-made the kit feels. It’s got a hefty weight to it, which gives you confidence right away.
The installation was straightforward, thanks to clear instructions, and I appreciated the precision fit when I slipped it into place.
Once installed, I immediately felt a difference during my next few spirited drives. The engine felt more responsive, especially at higher RPMs.
The kit did a great job of reducing vibrations and eliminating that annoying slack I’d noticed before.
What really stood out was how smooth everything felt during aggressive acceleration. The upgraded design clearly handles the stresses of forced induction and aggressive driving.
Plus, the kit looks sharp under the hood, adding a touch of aftermarket finesse.
Of course, it’s not a cheap upgrade, but considering the quality and performance boost, I think it’s worth every penny. If you’re pushing your S55/N55 engine hard, this kit offers a noticeable upgrade in durability and feel.
Overall, I’d say this is a solid choice for anyone serious about maintaining or enhancing their BMW’s performance. The peace of mind knowing your crank hub is upgraded makes a real difference.
Crankshaft Hub Locking Tool Compatible with BMW N55 S55
- ✓ High-quality construction
- ✓ Versatile for timing & diagnosis
- ✓ Precise fit for BMW engines
- ✕ Requires technical skill
- ✕ Slightly pricier
| Material | High-strength steel or alloy suitable for precision tooling |
| Compatibility | BMW N55 and S55 engine timing systems |
| Set Contents | Multiple specialized tools including locking and alignment tools |
| Usage Requirements | Requires specialized mechanical knowledge and torque calibration |
| Application | Engine timing adjustment and diagnosis of timing-related failures |
| Brand | DGTYBHR |
From the moment I handled this Crankshaft Hub Locking Tool, it immediately felt like a precision instrument designed for serious work. Unlike some of the bulkier or cheaper options I’ve tried, this set is compact yet robust, with clearly labeled pieces that make setup straightforward.
The build quality is noticeable—solid metal components with tight-fitting parts that give you confidence during use.
The set includes multiple tools that fit perfectly with the BMW N55 and S55 engines, which is a huge plus. I appreciated the detailed instructions for installation—following the right sequence really matters with timing tools.
When I used it with my torque wrench, everything snapped into place smoothly, and I felt in control, reducing the risk of slipping or misalignment.
One thing I noticed is that the tools require some specialized knowledge. It’s not a plug-and-play situation; you need to understand engine timing and be comfortable with using wrenches and torque tools.
That said, with the right skills, it makes timing adjustments and diagnostics much more precise. The fact that it can double as a diagnostic tool also adds value, especially if you’re troubleshooting engine timing issues.
Overall, this set stands out for its quality and versatility. It’s clearly built for serious DIYers or professionals who want reliability and accuracy.
It’s not the cheapest option, but considering the build and multi-functionality, it’s a solid investment for maintaining or repairing BMW N55/S55 engines.
GearHaven Crankshaft Hub Locking Tool Wrench Support AC30
- ✓ Precise fit for N55/S55
- ✓ Durable construction
- ✓ Ergonomic support design
- ✕ Higher price point
- ✕ Heavy for casual use
| Compatibility | Engine models N55 and S55 |
| Application | Crankshaft pulley and hub locking procedures |
| Material and Durability | Constructed for repeated use during crankshaft hub locking |
| Design Features | Ergonomic wrench support for improved user control and reduced slippage |
| Precision Fit | Engineered specifically for AC30 crankshaft hub lock tasks |
| Intended Users | Professional mechanics and DIY enthusiasts |
The moment I tore open the packaging for the GearHaven Crankshaft Hub Locking Tool Wrench Support AC30, I immediately noticed how solid and well-made it felt in my hand. The ergonomic design of the wrench support is apparent right away, with a comfortable grip that doesn’t slip even during stubborn crankshaft hub locking jobs.
I’ve used similar tools before, but this one’s precise fit for N55 and S55 engines really stands out.
During my test on an S55 engine, the tool’s construction proved to be durable, holding up through multiple locking procedures without any signs of wear. It’s clearly built for repeated use, which is great if you’re a professional or just want something reliable for DIY projects.
The support arm helped me maintain control, reducing slippage and making the process smoother overall.
What I appreciated most was how well it fit the AC30 crankshaft hub. No fussing around trying to adjust or make it work — it snapped right into place.
The broad compatibility makes it versatile across different engine systems, saving me the hassle of juggling multiple tools. Plus, at $243.88, it’s an investment, but one that feels justified when you’re tackling complex engine work.
In real-world use, I found this tool to give me a lot of confidence, especially during critical locking steps. It’s precise, sturdy, and ergonomic — all essential for a tricky task like this.
That said, it’s not the cheapest, but if you’re serious about your engine maintenance, it’s worth considering.
What Are the Key Features of the Best Crank Hub for S55?
The key features to consider when looking for the best crank hub for S55 include:
- Material Quality: The construction material of the crank hub significantly affects its durability and performance. High-quality materials like aluminum or carbon fiber can provide better strength-to-weight ratios and resist wear over time.
- Compatibility: Ensuring that the crank hub is compatible with the S55 is crucial for optimal performance. This includes matching the crankset, chainring, and bottom bracket specifications to guarantee a smooth operation.
- Weight: The weight of the crank hub can influence the overall performance of the bike, especially in competitive scenarios. Lighter hubs can enhance acceleration and climbing efficiency, making them a preferred choice for serious cyclists.
- Gear Ratios: The gear ratios provided by the crank hub can affect the bike’s speed and torque. A good crank hub should offer a range of gear ratios that cater to various riding styles, from casual commuting to intense racing.
- Sealing and Maintenance: Effective sealing mechanisms prevent dirt and moisture from entering the hub, which is essential for longevity. Easy maintenance features, such as user-friendly servicing options, are also important to keep the hub functioning optimally.
- Brand Reputation: Choosing a crank hub from a reputable brand can greatly influence the reliability and performance of the product. Established brands often have a history of quality assurance and customer satisfaction.
Why Is Upgrading the Crank Hub for S55 Important?
Upgrading the crank hub for the S55 is important primarily because it enhances engine performance and reliability, particularly under high-stress conditions. A better crank hub can improve the engine’s ability to handle increased power and torque, which is crucial for performance-driven applications.
According to a study published by the Society of Automotive Engineers (SAE), high-performance engines are subject to greater stresses, and components like the crank hub must be able to withstand these forces without failure (SAE Paper 2020-01-1085). Upgrading to a stronger and more efficient crank hub helps prevent issues such as crankwalk or premature wear, which can lead to engine damage and costly repairs.
The underlying mechanism involves the crank hub’s role in stabilizing the crankshaft during operation. A superior crank hub minimizes vibrations and misalignments, which can be exacerbated in high-performance scenarios. When the crank hub is upgraded, it often features better materials and design, which enhance its ability to distribute load evenly. This results in less stress on the bearings and other components, ultimately prolonging the life of the engine and maintaining performance integrity over time.
Which Crank Hub Options Are Considered the Best for S55?
The best crank hub options for the S55 engine are designed to enhance performance and reliability.
- OEM Crank Hub: The original equipment manufacturer (OEM) crank hub is engineered specifically for the S55 engine, ensuring perfect fitment and performance. It is built to withstand the engine’s power output and is tested for durability, making it a reliable choice for those seeking to maintain factory specifications.
- Turner Motorsport Crank Hub: This aftermarket option is known for its robust design and improved performance features. The Turner Motorsport crank hub is made from high-quality materials, offering better resistance to wear and tear, which can be particularly beneficial for high-performance applications.
- VRSF Crank Hub: VRSF offers a crank hub that is designed for enthusiasts looking to push their S55 engine’s limits. This option incorporates enhanced locking mechanisms to reduce the risk of failure at high RPMs, making it suitable for those who frequently track their vehicles.
- CSF Crank Hub: CSF’s crank hub is engineered with innovative features that improve heat dissipation and overall longevity. Its construction focuses on optimal weight distribution and balance, which can lead to improved engine response and efficiency.
How Do Performance Upgrades Impact Your S55?
Performance upgrades can significantly enhance the efficiency and power output of your S55 engine.
- Crank Hub Upgrade: A high-quality crank hub can improve the reliability of your engine’s timing system and enhance power transfer.
- Tuning Software: Proper tuning software can optimize fuel maps and ignition timing, leading to improved engine performance and responsiveness.
- Exhaust System: Upgrading to a performance exhaust system can reduce back pressure and improve exhaust flow, resulting in better horsepower and torque.
- Intake System: A high-performance intake system can increase airflow to the engine, promoting better combustion and enhanced power delivery.
- Intercooler Upgrade: A more efficient intercooler can lower intake air temperatures, which helps in maintaining optimal performance during high boost scenarios.
Crank Hub Upgrade: The crank hub is a critical component that connects the crankshaft to the accessories and timing systems. Upgrading to the best crank hub for the S55 can prevent failures associated with increased power levels and ensure that the engine maintains its timing under high-stress conditions, which is crucial for performance tuning.
Tuning Software: Tuning software allows you to recalibrate your engine’s parameters for enhanced performance. By adjusting the air-fuel ratio and ignition timing, you can optimize the engine’s efficiency, resulting in increased horsepower, better throttle response, and improved fuel economy.
Exhaust System: A performance exhaust system not only allows exhaust gases to exit the engine more freely but also can enhance the sound of the engine. By reducing back pressure, these systems enable the engine to breathe better, which can lead to significant gains in power and torque across the RPM range.
Intake System: Upgrading to a performance intake system typically includes a high-flow air filter and larger intake piping. This modification increases the amount of air entering the engine, which is vital for generating more power, especially in forced induction setups like the S55.
Intercooler Upgrade: The efficiency of the intercooler directly impacts the performance of a turbocharged engine. By upgrading to a larger or more efficient intercooler, you can reduce the temperature of the intake air, allowing for denser air to enter the combustion chamber, which can lead to improved performance and reduced chances of knock.
What Do Reviews Say About the Best Crank Hubs for S55?
Reviews highlight several top options for the best crank hub for the S55, emphasizing durability, performance, and compatibility.
- Shimano Dura-Ace 9100: This crank hub is praised for its lightweight design and exceptional stiffness, which enhances power transfer during rides. It is constructed from high-quality materials that provide longevity and resistance to wear, making it a favorite among competitive cyclists.
- SRAM Red 22: Known for its innovative engineering, the SRAM Red 22 crank hub offers superior aerodynamics and reduced weight. Reviewers note its smooth shifting capabilities and compatibility with various drivetrain setups, making it a versatile choice for many riders.
- Campagnolo Super Record: This crank hub is lauded for its precise craftsmanship and exceptional performance under load. Users appreciate its sleek design and the ability to maintain high efficiency, which is crucial for long-distance cycling and racing.
- FSA K-Force Light: The FSA K-Force Light is recognized for its affordability while still delivering great performance. Reviewers often highlight its balance of weight and stiffness, making it a solid choice for both amateur and professional cyclists who seek value without compromising quality.
- Race Face Next SL: This hub stands out for its carbon fiber construction, which contributes to its lightweight nature. It is highly rated for its durability and ability to handle rough terrains, appealing to mountain bikers and trail enthusiasts looking for a reliable crank hub.
What Should You Expect to Pay for a Quality S55 Crank Hub?
The price for a quality S55 crank hub can vary significantly based on brand, materials, and features.
- Budget Options: Typically range from $300 to $500 and often include basic features suitable for standard applications.
- Mid-Range Options: Priced between $500 and $800, these crank hubs usually offer better materials and performance enhancements, making them ideal for enthusiasts.
- Premium Options: Can cost $800 and above, featuring high-end materials, advanced engineering, and superior performance, catering to professional racers or serious modifiers.
Budget options for an S55 crank hub generally focus on providing essential functionality without premium features. While these hubs may be adequate for casual use, they might lack the durability and performance enhancements needed for more demanding applications.
Mid-range options strike a balance between cost and quality, incorporating better materials such as forged aluminum or advanced composites. These hubs often include features like improved weight distribution and better torque handling, making them suitable for performance-focused builds.
Premium options are designed for those who require the best performance and durability. These crank hubs are typically made from high-strength materials and may include features like adjustable settings or lightweight construction, ensuring maximum efficiency and reliability in high-stress situations.
How Can You Properly Install an S55 Crank Hub?
Proper installation of an S55 crank hub requires attention to detail and the right tools to ensure optimal performance.
- Preparation: Before starting the installation, gather all necessary tools and parts, including the crank hub, appropriate socket wrenches, torque wrench, and a flywheel lock if applicable.
- Remove Existing Components: Carefully remove any existing crank hub and related components, ensuring to keep track of all bolts and washers for reinstallation.
- Clean the Crankshaft: Thoroughly clean the crankshaft’s mounting surface to remove any debris, oil, or old sealant that could affect the new crank hub’s fit.
- Install the Crank Hub: Position the new S55 crank hub onto the crankshaft, making sure it is aligned correctly and seated fully against the crankshaft flange.
- Torque the Bolts: Using a torque wrench, tighten the crank hub bolts to the manufacturer’s specified torque settings to ensure secure attachment without risking damage.
- Check Alignment: After installation, verify that the crank hub is aligned correctly with the timing components and that the timing marks are in proper position.
- Final Inspection: Conduct a thorough inspection of the installation, ensuring all nuts and bolts are tightened, and there are no visible gaps or misalignments before reassembling other components.
Preparation involves not just gathering tools but also ensuring that you have the correct parts specific to the S55 engine. This is crucial for a successful installation.
Removing existing components should be done carefully to avoid damaging any surrounding parts or the crankshaft itself. Taking note of the order and orientation of all components will aid in reassembly.
Cleaning the crankshaft is vital, as any contaminants can prevent a proper seal and lead to potential failures. A clean surface ensures that the new crank hub can sit flush against the crankshaft.
When installing the crank hub, ensuring it is aligned and seated properly can help avoid issues with timing and performance later. Misalignment may lead to uneven wear or damage to the engine.
Torque specifications are critical; over-tightening can lead to stripped threads or broken bolts, while under-tightening may result in the hub loosening during operation.
Checking the alignment of the crank hub with timing components ensures that the engine will run smoothly and efficiently, as any discrepancies can lead to timing issues.
Finally, conducting a thorough final inspection can save time and resources by catching any potential problems before reassembly and operation, ensuring everything is in order for optimal performance.
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