Description

Bolt Kit – No 5: The Must-Have Spare Parts Kit for BMC Fourstroke 01 Owners – Complete Guide to Maintenance and Performance

If you own a BMC Fourstroke 01 mountain bike, keeping your suspension linkage and frame pivots in top condition is essential for smooth rides, reliable handling, and long-term durability. One of the smartest investments you can make is the official Bolt Kit – No 5, a precision-engineered spare parts package designed specifically for this iconic XC race machine. Whether you’re a weekend warrior tackling technical trails or a competitive racer pushing for podiums, this kit ensures your bike stays factory-fresh without the hassle of hunting down individual components.

In this comprehensive guide, we’ll dive deep into everything you need to know about the Bolt Kit – No 5 – from its exact contents and compatibility to installation tips, benefits, and maintenance advice. By the end, you’ll understand why keeping one of these kits on hand can save you time, money, and potential headaches down the road.

What Makes the Bolt Kit – No 5 Special for BMC Riders?

BMC Switzerland is renowned for crafting some of the world’s most advanced full-suspension mountain bikes, and the Fourstroke 01 stands out as a lightweight, efficient XC performer with 100mm of travel and innovative features like the Autodrop seatpost. However, even the best frames rely on high-quality hardware to connect moving parts.

The Bolt Kit – No 5 is an official OEM spare parts set from BMC, priced at just $59 USD (SKU: 210481). It’s not a generic assortment – it’s tailored for specific pivot points on the FS01 chassis. Unlike aftermarket options that might compromise tolerances or thread quality, this kit uses premium materials that match the bike’s original specifications for perfect fit, corrosion resistance, and strength.

This image shows a typical layout from the Bolt Kit – No 5 family of spares: machined aluminum bushings, precision bolts with threadlocker applied, and matching washers. Every piece is engineered to restore your linkage exactly as BMC intended.

Compatible Models: Is the Bolt Kit – No 5 Right for Your Bike?

The Bolt Kit – No 5 is officially compatible with the BMC Fourstroke 01 (often abbreviated as FS01), including early models like the 2014 MY versions and subsequent iterations in the Fourstroke lineup. This covers popular configurations such as the Fourstroke 01 ONE, THREE, and LTD editions – the very bikes that dominate XC races worldwide.

If your bike features the signature carbon frame with the compact rear triangle and sophisticated suspension kinematics, chances are this kit is the direct replacement for worn or damaged hardware. Always cross-reference your frame’s serial number or consult your local BMC dealer if you’re unsure, but most Fourstroke 01 owners report perfect compatibility.

Why does compatibility matter so much? Suspension pivots endure massive stress from repeated compression, mud, water, and vibration. Using the wrong bolt size or material can lead to play, creaking, or even catastrophic failure. The Bolt Kit – No 5 eliminates guesswork and restores factory performance in minutes.

Here’s a real-world Fourstroke 01 in action – notice the clean pivot areas where the Bolt Kit – No 5 hardware lives. Keeping these points tight is key to that plush-yet-responsive ride feel.

What’s Actually Inside the Bolt Kit – No 5?

Unlike bulky general hardware assortments, this kit is concise and purpose-built. It contains six long bolts along with the necessary bushings, washers, and threadlocker pre-applied on select pieces. These are the critical fasteners that secure the main suspension linkage and pivot points.

• Precision-machined silver or black anodized bolts (exact lengths and threads matched to FS01 specs)
• Matching aluminum spacers and bushings for smooth rotation
• Flat and countersunk washers to distribute load evenly
• Blue threadlocker compound already on key bolts for vibration resistance

Everything arrives pre-sorted and ready to install. No measuring, no trips to the hardware store – just open the package and get your bike back on the trail.

Key Benefits of Using the Official Bolt Kit – No 5

Investing in the genuine Bolt Kit – No 5 offers advantages that generic alternatives simply can’t match:

1. Perfect Fit and Performance: Tolerances are identical to the factory build, ensuring zero slop in your suspension and maintaining the bike’s legendary pedaling efficiency.
2. Durability and Corrosion Protection: High-grade materials resist rust even after muddy rides or winter storage.
3. Safety First: Worn bolts can cause frame damage or sudden failure. OEM parts eliminate that risk.
4. Warranty-Friendly: Using official spares keeps your BMC warranty intact, unlike third-party hardware.
5. Cost-Effective Long-Term: At $59, it prevents expensive frame repairs or full linkage replacements later.

Riders who have swapped in this kit report quieter operation, better suspension response, and renewed confidence on descents.

Similar pivot bolt kits (like this blacked-out example) illustrate the complexity of modern mountain bike hardware – the Bolt Kit – No 5 follows the same high-precision philosophy.

Signs It’s Time to Replace Your Pivot Hardware

Don’t wait for a breakdown. Watch for these common warning signs on your Fourstroke 01:

• Creaking or clicking from the rear triangle during pedaling or climbing
• Noticeable play when rocking the bike side-to-side with the brakes applied
• Suspension feeling harsh or inconsistent
• Visible rust, pitting, or wear on existing bolts
• After a major crash or heavy trail season

If any of these sound familiar, the Bolt Kit – No 5 is your quick fix.

Step-by-Step Installation Guide for the Bolt Kit – No 5

Installing the kit is straightforward with basic tools, but take your time for best results. Here’s a simple walkthrough:

1. Prepare Your Workspace: Clean the bike thoroughly, especially around the pivots. Use a torque wrench – critical for correct specs.
2. Remove Old Hardware: Support the frame securely. Loosen and extract the old long bolts one at a time, noting their positions.
3. Clean and Inspect: Wipe bushings and frame holes. Check for damage – replace any worn inserts if needed.
4. Install New Bolts from the Kit: Apply a light coat of grease where recommended. Insert the new long bolts from the Bolt Kit – No 5, threading them by hand first.
5. Torque to Spec: Use BMC’s recommended torque values (usually 8-12 Nm for these pivots – check your manual). Don’t overtighten!
6. Test Ride: Cycle the suspension through its full travel, then take a short spin to confirm everything feels solid.

Pro tip: Work on one pivot at a time to avoid misalignment. If you’re not comfortable with bike mechanics, visit a certified BMC service center.

Hands-on pivot bolt work looks just like this – precise tools and careful technique make all the difference when installing your Bolt Kit – No 5.

Maintenance Tips to Extend the Life of Your Hardware

Once you’ve installed the Bolt Kit – No 5, keep your pivots happy with these habits:

• Clean and lubricate after every wet or muddy ride
• Check torque every 500-1000 km or after big impacts
• Store your bike indoors to prevent corrosion
• Pair the kit with regular full suspension service

Many owners keep a spare Bolt Kit – No 5 in their garage for instant peace of mind before big events.

Where to Purchase the Bolt Kit – No 5

The safest place is directly through authorized BMC dealers or the official BMC website (us.bmc-switzerland.com or regional stores). Look for SKU 210481 to ensure authenticity. Avoid unverified online marketplaces where counterfeits sometimes appear.

Current pricing sits at $59 USD, often with fast shipping for in-stock items. Many shops bundle it with a full service for even better value.

Frequently Asked Questions About the Bolt Kit – No 5

Is the Bolt Kit – No 5 only for Fourstroke 01? Primarily yes – it’s engineered for the FS01 platform. Other BMC models use different numbered kits (No 6, No 7, etc.).

Can I install it myself? Absolutely, if you have basic mechanical skills and a torque wrench. Otherwise, professional installation is recommended.

How many bolts does it include? Six long bolts plus supporting bushings and washers – everything needed for the targeted pivots.

Does it come with threadlocker? Yes, pre-applied on critical pieces for convenience and security.

Will it void my warranty? No – using genuine BMC spares actually supports your warranty coverage.

Final Thoughts: Keep Your BMC Fourstroke Performing at Its Peak

The Bolt Kit – No 5 might be a small investment, but its impact on ride quality, safety, and longevity is huge. For any serious Fourstroke 01 owner, having this kit ready is like carrying insurance for your most important pivots.

Don’t let worn hardware hold back your adventures. Grab the Bolt Kit – No 5 today, follow proper installation, and enjoy that signature BMC ride feel for thousands more kilometers.

Ready to upgrade your maintenance game? Check your local dealer or the official BMC spare parts section and experience the difference genuine parts make.

Ride safe, ride strong – and keep those pivots bolted tight!