Description

Bolt Kit – No 15: Your Complete Guide to Maintaining BMC Fourstroke Mountain Bikes with Genuine Spare Parts

If you own a classic BMC Fourstroke full-suspension mountain bike, keeping it running smoothly requires the right components. One of the most important yet often overlooked items is the Bolt Kit – No 15. This specialized spare part kit from BMC Switzerland restores critical suspension linkage points and ensures your bike performs at its peak for years to come.

Whether you’re a weekend trail rider or a serious cross-country racer, understanding this kit can save you time, money, and headaches down the road. In this in-depth guide, we’ll cover everything you need to know about the Bolt Kit – No 15 — from exact compatibility and contents to installation tips, maintenance advice, and where to buy it. Let’s dive in and keep your BMC riding strong.

What Exactly Is the Bolt Kit – No 15?

The Bolt Kit – No 15 is an official BMC spare parts package designed specifically for the pivot hardware on select Fourstroke models. BMC numbers its bolt kits sequentially so owners can quickly identify the correct replacement set for their frame.

This particular kit (SKU 216080) comes in a distinctive red finish that matches many BMC frames and provides both functional hardware and aesthetic consistency. Unlike generic hardware store bolts, every piece in the Bolt Kit – No 15 is precision-engineered to BMC’s exact tolerances, ensuring perfect fitment and long-term durability under the high stresses of mountain biking.

The kit addresses wear that naturally occurs at the main pivot points and suspension linkages. Over time, bolts, bushings, and washers can develop play, leading to creaking noises, reduced suspension efficiency, and even safety concerns. Replacing them with the genuine Bolt Kit – No 15 restores that tight, responsive feel right out of the box.

Compatibility: Which Bikes Need the Bolt Kit – No 15?

The Bolt Kit – No 15 is made exclusively for the BMC Fourstroke 02 29 model, specifically the 2014 model year (MY2014). This iconic full-suspension 29er was praised for its efficient pedaling platform and capable trail manners, but like any high-performance bike, it benefits from periodic hardware refreshes.

If your frame bears the “Fourstroke 02” designation and 29-inch wheels, this is the exact kit you need for the long pivot bolts and associated hardware. It is not interchangeable with other BMC models or later Fourstroke generations, which use different numbered kits (such as No. 7, No. 23, or No. 25). Always double-check your frame’s year and model before ordering to avoid compatibility issues.

What’s Included in the Bolt Kit – No 15?

When you open the box, you’ll find a comprehensive set of premium components engineered for direct replacement:

• 6 long bolts (the primary hardware for the main pivot points)
• Multiple red anodized pivot sleeves/bushings
• Stainless steel washers
• Circlips (snap rings) for secure retention
• Additional small fasteners and seals

The red anodized finish on the bushings and certain components not only looks sharp but also helps resist corrosion on the trail. Many owners report that the included thread-locking compound on the longer bolts makes installation easier and more reliable. At a retail price of around $59 USD, this kit delivers exceptional value compared to piecing together individual parts.

Why Choose Genuine BMC Parts Over Generic Alternatives?

Using the official Bolt Kit – No 15 isn’t just about convenience — it’s about performance and safety. Generic bolts often have slightly different thread pitches, head designs, or material grades that can cause binding, premature wear, or even frame damage.

BMC’s engineering team designs these kits to work in harmony with the proprietary APS (Advanced Pivot System) suspension layout found on the Fourstroke 02. You get:

• Precise tolerances that eliminate play
• Corrosion-resistant materials built for muddy, wet conditions
• Factory-specified torque values for worry-free assembly
• Peace of mind knowing your suspension geometry remains unchanged

Riders who have switched from aftermarket hardware often notice quieter operation, smoother suspension action, and better overall bike feel after installing the Bolt Kit – No 15.

Step-by-Step Installation Guide for the Bolt Kit – No 15

While many experienced mechanics handle this job at home, we recommend having a professional bike shop perform the work if you’re unsure. Here’s a high-level overview of the process:

1. Preparation — Clean the bike thoroughly and support it securely on a stand. Remove the rear shock if necessary for better access.
2. Disassembly — Carefully remove old circlips, bushings, and bolts using the proper tools (Allen keys, snap-ring pliers, and a torque wrench).
3. Inspection — Check the frame pivots for any signs of wear or damage before installing new parts.
4. Installation — Insert the new red anodized bushings, slide in the long bolts from the Bolt Kit – No 15, add washers, and secure with circlips. Apply the included thread locker where specified.
5. Torque to Spec — Follow BMC’s recommended torque values (typically available in the owner’s manual or from your dealer) to avoid over-tightening.
6. Reassembly and Testing — Reinstall the shock, check all pivots for smooth movement, and take a short test ride to confirm everything feels solid.

The entire job usually takes 1–2 hours for a skilled technician. After installation, your Fourstroke will feel noticeably tighter and more responsive.

Maintenance Tips to Extend the Life of Your Bolt Kit – No 15

Once installed, proper care keeps your new hardware performing optimally:

• Clean and lubricate pivots every 10–15 rides, especially after wet or muddy outings.
• Check bolt torque every 500–1000 km or seasonally.
• Inspect for play or unusual noises during pre-ride checks.
• Store your bike in a dry place to minimize corrosion.
• Consider replacing the Bolt Kit – No 15 again after 3–5 years of heavy use, depending on riding conditions.

Regular maintenance not only protects your investment but also keeps the bike safer and more enjoyable to ride.

Where to Buy the Authentic Bolt Kit – No 15

For guaranteed authenticity and warranty support, purchase directly from BMC’s official website or authorized dealers. The kit is currently listed at $59 USD and is usually in stock with fast shipping.

Popular retailers include:

• BMC Switzerland online store
• Premium bike shops that carry BMC
• Select online cycling specialists with genuine BMC parts sections

Avoid unverified third-party sellers to ensure you receive the exact red-anodized kit shown in official photos.

Frequently Asked Questions About the Bolt Kit – No 15

Is this kit compatible with newer Fourstroke models? No — newer generations use different numbered kits. Confirm your exact model year before purchasing.

Do I need special tools? Basic bike tools plus snap-ring pliers and a torque wrench are recommended. Most shops already have them.

How long does shipping take? Official BMC orders typically ship within a few business days to most countries.

Can I reuse old bushings with new bolts? BMC recommends replacing the entire set together for best results and proper tolerances.

Does the kit include bearings? No — this kit focuses on bolts, bushings, washers, and circlips. Bearings are sold separately if needed.

Final Thoughts: Keep Your BMC Fourstroke Thriving

The Bolt Kit – No 15 may look like a small collection of hardware, but it plays a massive role in maintaining the legendary ride quality of the BMC Fourstroke 02. Whether you’re chasing podiums or simply enjoying weekend adventures, installing this genuine kit restores factory performance and gives you confidence on every trail.

Don’t wait for creaks or loose pivots to slow you down. Grab your Bolt Kit – No 15 today, schedule a professional installation if needed, and get back to riding the way BMC intended — fast, smooth, and reliable.

Happy trails, and may your pivots stay silent and your suspension stay supple for many more epic rides ahead!

If you have questions about compatibility or installation for your specific Fourstroke, drop a comment below or reach out to your local BMC dealer. Ride safe!