Description

Bolt Kit – No 23: Complete Guide to This Essential Spare Part for BMC Speedfox Mountain Bikes

If you own a BMC Speedfox full-suspension mountain bike, you already know how important proper maintenance is for keeping that smooth, efficient ride alive on the trails. One often-overlooked but critical component is the hardware that holds the rear suspension linkage together. Enter the Bolt Kit – No 23 – a genuine BMC replacement set designed specifically to restore and maintain the pivot points on select Speedfox models.

In this detailed guide, we’ll cover everything you need to know about the Bolt Kit – No 23: its purpose, compatibility, features, installation tips, maintenance benefits, and why choosing the official kit matters more than you might think. Whether you’re a weekend warrior or a serious trail rider, understanding this small but mighty spare part can extend the life of your bike and keep your suspension performing at its peak.

What Is the Bolt Kit – No 23 and Why Does It Matter?

The Bolt Kit – No 23 is an official BMC spare parts set consisting of six long orange-colored bolts. These aren’t ordinary hardware store fasteners – they’re precision-engineered to match the exact specifications of BMC’s advanced suspension linkage system.

Over time, suspension pivots on full-suspension bikes like the Speedfox experience wear from dirt, water, repeated flexing, and high-impact riding. The original bolts can loosen, corrode, or stretch slightly, leading to unwanted play, reduced suspension efficiency, or even frame damage if ignored. Replacing them with the Bolt Kit – No 23 restores factory tolerances and ensures your bike’s rear end tracks smoothly again.

Unlike aftermarket options that may not match thread pitch, length, or material strength, this kit uses BMC’s proprietary specs for perfect fitment and durability. Priced at around $59 USD, it’s an affordable way to avoid bigger, costlier repairs down the line.

Compatible Models: Which BMC Speedfox Bikes Need the Bolt Kit – No 23?

BMC designed the Bolt Kit – No 23 specifically for a handful of popular Speedfox variants from the mid-2010s era. It’s a direct match for:

• Speedfox 02 29
• Speedfox 03 29
• Speedfox 02 TC (trail/cross-country version)
• Speedfox 03 TC

These are primarily the 2016 model year Speedfox 29-inch wheel bikes (and some overlapping years), known for their APS (Advanced Pivot System) suspension that delivers excellent pedaling efficiency and plush travel.

If your bike’s serial number or frame markings match these models, the Bolt Kit – No 23 is the exact replacement hardware you need. Always double-check your frame’s pivot points against BMC’s official spare parts catalog or consult a certified BMC dealer before ordering.

2019 BMC Speedfox First Ride Review: A Single Remote Controls Both Dropper and Shock – Singletracks Mountain Bike News

Key Features and Specifications of the Bolt Kit – No 23

What makes this kit stand out? Here are the highlights:

• Six long orange bolts – Pre-anodized in BMC’s signature orange for easy identification and corrosion resistance.
• Precision-machined – Exact thread pitch and length engineered for the Speedfox linkage pivots.
• High-strength material – Designed to handle the stresses of aggressive mountain biking without stretching or failing.
• Direct OEM fit – No modifications required; drops straight into your existing suspension hardware.
• Compact packaging – Comes ready for immediate service – no extra bearings or sleeves included, as this kit focuses purely on the long pivot bolts.

These bolts are part of BMC’s broader family of numbered bolt kits (you’ll see similar options like Bolt Kit No 24 or No 26 for other models). The orange finish not only looks sharp but also helps technicians quickly spot the correct hardware during service.

(Note: The images above show similar BMC bolt kits for illustration – your Bolt Kit – No 23 contains the six long orange bolts specifically.)

Why Regular Replacement with the Bolt Kit – No 23 Improves Performance

Mountain bike suspension pivots are high-stress areas. Even with proper greasing, bolts eventually wear. Here’s what you gain by installing fresh hardware from the Bolt Kit – No 23:

1. Eliminate play – Tight pivots mean better suspension response and less energy loss.
2. Smoother travel – Your shock and linkage work exactly as engineered, delivering consistent 100–130mm of travel (depending on your Speedfox model).
3. Prevent frame damage – Loose bolts can ovalize pivot holes over time – costly to repair.
4. Better safety – Secure hardware reduces the risk of sudden linkage failure on technical descents.
5. Longer bearing life – Fresh bolts reduce side-loading on the bushings and bearings that sit inside the pivots.

Many riders report their Speedfox feels “like new” after a simple bolt swap – especially if the bike has seen 2–3 seasons of hard use.

Step-by-Step Guide: How to Install the Bolt Kit – No 23

While BMC recommends professional service for full suspension overhauls, replacing just the long bolts is straightforward for mechanically inclined riders. Here’s a general overview (always refer to your specific Speedfox manual for torque specs):

Tools you’ll need:

• Torque wrench (essential!)
• Allen keys (usually 5mm or 6mm for pivot bolts)
• Grease (high-quality bike suspension grease)
• Clean rags and degreaser
• Optional: bearing puller if checking internals

Basic steps:

1. Place your bike in a sturdy stand and remove the rear wheel for better access.
2. Clean the entire linkage area thoroughly.
3. One pivot at a time, loosen and remove the old long bolts (work symmetrically to avoid stressing the frame).
4. Inspect bushings and bearings – replace if worn (separate kits available from BMC).
5. Apply fresh grease to pivot surfaces.
6. Install the new bolts from the Bolt Kit – No 23 and torque to BMC’s recommended values (typically 10–15 Nm – check your manual!).
7. Reassemble, reinstall the wheel, and test the suspension by rocking the rear end.

Pro tip: Work on one side or pivot at a time so nothing shifts out of alignment. If you’re unsure, take it to a BMC-certified shop – many offer suspension service packages that include the Bolt Kit – No 23.

Maintenance Tips to Extend the Life of Your Bolt Kit – No 23 and Suspension

Prevention beats replacement every time. Follow these habits:

• Clean after every wet or muddy ride – Hose off the linkage gently and dry thoroughly.
• Grease pivots annually – Or every 50–100 hours of riding.
• Check bolt torque – Before big trips or after crashes.
• Store indoors – Avoid leaving your Speedfox exposed to the elements.
• Pair with full service kits – Consider BMC’s complete linkage kits (with bearings) every 2–3 years for maximum longevity.

Regular care means your Bolt Kit – No 23 investment lasts longer and your bike stays trail-ready.

Where to Buy the Authentic Bolt Kit – No 23

Always buy genuine BMC parts to guarantee quality and proper fit. Official sources include:

• The BMC Switzerland online store (us.bmc-switzerland.com)
• Authorized BMC dealers worldwide
• Reputable online bike shops that stock BMC spare parts

Expect to pay approximately $59 USD. Avoid suspiciously cheap third-party “compatible” kits – the wrong thread or material can cause serious issues.

Frequently Asked Questions About the Bolt Kit – No 23

Q: Is this kit only for 2016 models? A: Primarily yes, but confirm with your frame’s year and model code.

Q: Does it include bearings? A: No – just the six long orange bolts. Bearings come in separate kits.

Q: How often should I replace these bolts? A: Every 2–4 years or when you notice play, squeaking, or after heavy use.

Q: Can I install it myself? A: Many experienced home mechanics can, but torque accuracy is critical – visit a shop if in doubt.

Final Thoughts: Keep Your BMC Speedfox Performing at Its Best

The Bolt Kit – No 23 might be a small package, but it makes a huge difference in how your Speedfox rides. By investing in this genuine replacement hardware, you’re protecting your bike’s suspension performance, safety, and long-term value.

Don’t wait until your linkage feels sloppy – grab a Bolt Kit – No 23 today and enjoy that confident, planted feel on every descent. Your future self (and your bike) will thank you.

Ready to service your Speedfox? Check the official BMC parts page or contact your local dealer for the Bolt Kit – No 23 and other essential spares. Happy trails!