Description

Bolt Kit – No 26: Your Ultimate Guide to Maintaining and Upgrading the BMC Fourstroke 01 Mountain Bike Suspension

If you’re a proud owner of a BMC Fourstroke 01 full-suspension mountain bike, you already know how thrilling it is to rip down technical trails with precise handling and plush suspension performance. But over time, even the best bikes need attention—especially the critical hardware that keeps the rear suspension pivots smooth and responsive. That’s where the Bolt Kit – No 26 comes in as a genuine BMC spare part designed specifically for your bike.

This comprehensive hardware and bearing replacement kit restores factory-level performance to your 2019 Fourstroke 01 model (also referred to as FS01). Whether you’re a weekend warrior, competitive XC racer, or trail enthusiast, understanding and using the right parts like this one can extend the life of your high-end machine and keep those descents feeling fresh ride after ride.

BMC MTB Bikes | Fourstroke 01 – BMC USA Corporation

Why the BMC Fourstroke 01 Remains a Trail Favorite

The BMC Fourstroke 01 is a lightweight, efficient cross-country and downcountry machine built with advanced carbon fiber construction and progressive suspension kinematics. Its 100-120mm travel (depending on configuration) strikes the perfect balance between pedaling efficiency and trail capability. Riders love its agile geometry, integrated cable routing, and reliable performance on everything from flowy singletrack to rocky descents.

However, the rear linkage system relies on multiple pivot points with bearings, bushings, axles, and bolts that endure constant stress, dirt, water, and impacts. After hundreds of kilometers—or sooner in wet, muddy conditions—these components can develop play, noise, or reduced damping efficiency. Regular inspection and replacement with authentic parts like the Bolt Kit – No 26 prevent bigger issues down the road.

Signs It’s Time to Replace Your Suspension Hardware

How do you know your Fourstroke needs the Bolt Kit – No 26? Look for these common symptoms:

• Creaking or clicking noises from the rear triangle during pedaling or compression
• Excessive play or side-to-side movement in the linkage
• Reduced suspension sensitivity and plushness
• Visible wear, rust, or dried grease on pivot bolts
• Difficulty achieving smooth shock operation after cleaning

Ignoring these signs can lead to accelerated frame wear or compromised safety. Genuine BMC kits like this one are engineered to exact tolerances, ensuring everything fits perfectly without guesswork.

What’s Included in the Bolt Kit – No 26?

BMC doesn’t leave anything to chance with this complete suspension rebuild package. The Bolt Kit – No 26 (SKU 301734) weighs approximately 168 grams and contains everything needed for a full refresh of the key pivot points on the Fourstroke 01 linkage. Here’s the detailed contents:

• 2x axles
• 4x long bolts
• 2x axle nuts
• 6x additional bolts (including the shockmount bolt M6x12mm)
• 8x high-quality bearings (10×22 size)
• 2x Norglide bushings
• 11x spacers and UL washers (various sizes including 19.7×12.7, 6.2×21, and others)
• 1x C-ring (circlip)
• 2x O-rings
• Additional shockmount axle (7.98 M10), trunnion mount bolts (M10x15mm), and flat washers

This isn’t just a handful of generic fasteners—it’s a precision-matched set that matches the original factory specifications for the 2019 Fourstroke 01 rear suspension.

Bolt Kit – No 26 – BMC Switzerland AG

The kit even includes the specialized shockmount hardware, making it far more comprehensive than aftermarket alternatives. All components are designed for durability against the elements while maintaining the bike’s legendary low-friction feel.

Key Specifications and Compatibility

• Compatible Models: Exclusively for the BMC Fourstroke 01 (MY 2019 / FS01)
• Weight: 168g
• Price: Typically around USD 119 (check current pricing on official channels)
• Material: Premium steel bolts, sealed bearings, and corrosion-resistant bushings
• Position Coverage: Covers linkage positions 1-7, 9-11, and 13-17 on the Fourstroke 01 frame

Because it’s an official BMC part, it integrates seamlessly with your existing shock, frame, and other components—no modifications required.

Beautiful Bicycle: A Ripping BMC Fourstroke LT | Contender Bicycles

Step-by-Step Overview of Installing the Bolt Kit – No 26

While BMC recommends having this work performed by a qualified bike mechanic (especially to maintain warranty and proper torque), here’s a high-level overview for educated owners:

1. Preparation: Clean the entire rear triangle thoroughly. Remove the rear shock and wheels for better access.
2. Disassembly: Carefully remove old bolts, bearings, and bushings using appropriate tools (bearing pullers and presses are essential to avoid frame damage).
3. Inspection: Check frame pivot bores for any scoring or wear before proceeding.
4. Installation: Press in new bearings, install bushings and spacers, then thread in the fresh axles and bolts from the Bolt Kit – No 26. Apply high-quality bike grease to all contact surfaces.
5. Reassembly and Torque: Reinstall the shock, torque all fasteners to BMC-specified values (typically 5-15 Nm depending on the bolt—refer to your owner’s manual), and check for smooth operation.
6. Test Ride: Start with easy spins to bed in the new hardware before pushing hard.

Pro tip: Always replace bearings and hardware as a complete set rather than piecemeal to ensure balanced performance and longevity.

Benefits of Choosing Genuine Bolt Kit – No 26 Over Generic Options

• Perfect Fit and Performance: No binding, no extra play—restores the exact kinematics BMC engineered.
• Durability: Sealed bearings and premium materials resist contamination better than cheap imports.
• Warranty Preservation: Using official parts keeps your BMC frame warranty intact.
• Value: At around $119, this kit is cost-effective compared to repeated repairs or frame replacement.
• Peace of Mind: Fewer creaks, smoother suspension, and confidence on every ride.

Many riders report noticeable improvements in small-bump sensitivity and overall quietness after installation.

Ongoing Maintenance Tips for Your BMC Fourstroke 01

To maximize the lifespan of your new Bolt Kit – No 26 hardware:

• Clean and inspect pivots every 200-300 km (more often in wet conditions).
• Re-grease linkage points annually or after deep cleaning.
• Check torque settings seasonally.
• Store your bike indoors to minimize corrosion.
• Pair with regular shock service (every 100-200 hours) for best results.

BMC provides excellent resources through their dealer network and online manuals for owners who want to stay proactive.

Where to Purchase the Bolt Kit – No 26

The safest place is directly from authorized BMC retailers or the official BMC website (us.bmc-switzerland.com or regional sites). Authorized dealers ensure you receive genuine parts with proper support. Avoid unverified third-party sellers to prevent counterfeit issues. Many shops offer professional installation packages, making the process hassle-free.

Related kits in the BMC lineup (such as Bolt Kit – No 28 or No 29) cover other models, so double-check compatibility for your exact year and frame.

Frequently Asked Questions About Bolt Kit – No 26

Is this kit suitable for other BMC models? No—it is specifically engineered for the Fourstroke 01 (2019 model year).

How long does installation take? A skilled mechanic can complete it in 1-2 hours, including thorough cleaning.

Do I need special tools? Yes—bearing presses, circlip pliers, and a torque wrench are required for professional results.

Will this fix my creaking suspension? In most cases, yes, especially if the issue stems from worn pivots rather than the shock itself.

Can I install it myself? Experienced home mechanics can, but beginners should visit a certified BMC service center to avoid costly mistakes.

Final Thoughts on the Bolt Kit – No 26

Investing in the Bolt Kit – No 26 is one of the smartest maintenance decisions you can make for your BMC Fourstroke 01. It keeps your bike performing at its peak, protects your investment, and ensures every ride delivers the smooth, efficient experience BMC is famous for. Don’t wait until the creaks become clunks—refresh your suspension hardware today and get back to what you love most: riding with confidence.

Whether you’re chasing podiums or simply enjoying the trails, genuine BMC parts like this Bolt Kit – No 26 make all the difference. Check availability at your local dealer or online, and ride on!