Description

Bolt Kit – No 12: Essential OEM Spare Parts for BMC Fourstroke 02 Mountain Bikes – Complete Guide, Compatibility, and Maintenance Tips

If you own a classic BMC full-suspension mountain bike and notice play in the rear linkage or reduced suspension performance, the right hardware can make all the difference. The Bolt Kit – No 12 is the official replacement part designed specifically for keeping your bike’s pivots tight, smooth, and reliable on the trail.

Whether you’re a dedicated BMC rider restoring a 2014-era machine or simply maintaining your Fourstroke for years of aggressive riding, this kit delivers precision-engineered components straight from the Swiss manufacturer. In this in-depth guide, we’ll cover everything you need to know about the Bolt Kit – No 12 — from exact contents and compatibility to installation advice, benefits, and why OEM parts outperform generics.

What Is the Bolt Kit – No 12 and Why Does Your BMC Need It?

Full-suspension mountain bikes like the BMC Fourstroke rely on multiple pivot points in the rear triangle and linkage to deliver plush travel while staying stiff under power. Over time, bolts, spacers, and clips can wear, corrode, or loosen from mud, water, and thousands of trail miles. When that happens, you lose precious suspension efficiency, introduce unwanted flex, and risk bigger problems like damaged bearings or frame wear.

The Bolt Kit – No 12 is BMC’s complete hardware refresh package for these critical areas. Priced at an affordable $59, it restores factory tolerances without the guesswork of mixing aftermarket pieces. Unlike universal kits that may not match thread pitches or spacer lengths, every item in this set is engineered for perfect fit on the target frame.

Exact Contents of the Bolt Kit – No 12

This kit includes everything required for a thorough pivot service on the compatible model:

• 6 long bolts
• 2 short bolts
• 3 long screws
• 2 short screws
• 8 spacers (plus an additional 8 spacers in the packaging)
• 2 caps
• 3 clips
• 2 additional screws

These components target the main linkage pivots and shock mounting points. Many riders pair the Bolt Kit – No 12 with a fresh set of bearings during a full overhaul for maximum smoothness.

Similar official BMC kits (like the Rear Shock Bolt Set No. 7 or linkage kits for newer Fourstroke models) follow the same high-quality anodized or coated finish you see here — durable, corrosion-resistant, and color-matched where appropriate.

Compatibility: Which Bikes Use the Bolt Kit – No 12?

The Bolt Kit – No 12 (SKU 215480) is specifically designed for the BMC FS02 29 — also known as the Fourstroke 02 29″ model from model year 2014. This lightweight cross-country/trail bike featured 100mm of travel and BMC’s advanced suspension layout.

If your frame serial number or model badge reads “Fourstroke 02 29” or “FS02,” this is the exact kit you need. Later Fourstroke generations (01, LT, AMP) use different numbered kits (No. 28, No. 29, No. 30, etc.), so always verify your year and model before ordering.

Owners of these 2014-era bikes often report that replacing the original hardware after 3–5 seasons of hard use transforms how the bike feels — tighter, more responsive, and quieter.

Key Benefits of Using the Official Bolt Kit – No 12

Choosing the genuine Bolt Kit – No 12 delivers several advantages over generic alternatives:

• Perfect Fit and Thread Engagement — No filing, shimming, or cross-threading worries.
• Factory Durability — Precision-machined from high-grade materials with proper coatings to resist trail grime.
• Maintained Warranty & Resale Value — Keeping your BMC with original parts helps when selling or claiming any remaining coverage.
• Improved Ride Quality — Eliminates pivot slop that robs pedaling efficiency and suspension sensitivity.
• Safety First — Loose pivots can lead to catastrophic failure; fresh hardware gives peace of mind on technical descents.

Many riders notice the bike feels “like new” again after installing this kit alongside fresh grease and bearings.

Step-by-Step Installation Tips for the Bolt Kit – No 12

While a professional bike shop is recommended for complex linkage work, confident home mechanics can tackle this with the right tools:

1. Prep the Bike — Clean the entire rear triangle thoroughly. Remove the shock and old hardware.
2. Inspect Bearings — Check for pitting or roughness; replace if needed (separate bearing kits are available).
3. Apply Grease — Use high-quality assembly grease or anti-seize on threads and contact surfaces.
4. Install Sequentially — Follow the original torque sequence from BMC’s manual (typically 8–12 Nm for pivot bolts).
5. Double-Check — Cycle the suspension through full travel and re-torque after the first ride.

ASK MBA: HOW OFTEN SHOULD I GREASE MY BIKE’S SUSPENSION PIVOTS? – Mountain Bike Action Magazine

Pro tip: Photograph the original hardware layout before disassembly — it makes reassembly foolproof.

Signs It’s Time to Order Your Bolt Kit – No 12

Watch for these common indicators:

• Clicking or creaking from the rear end
• Noticeable side-to-side play when pushing on the saddle
• Reduced small-bump sensitivity
• Suspension that feels “mushy” or inconsistent
• Visible corrosion or stripped threads on existing bolts

Catching these early prevents expensive frame damage and keeps your Fourstroke performing at its best.

Where to Buy the Bolt Kit – No 12

The safest sources are authorized BMC dealers or the official BMC online store (us.bmc-switzerland.com or regional sites). Retailers like LVR Cycles and specialized bike shops also stock it. Expect quick shipping since the kit remains in stock at many outlets.

Avoid unverified third-party sellers offering suspiciously cheap “compatible” versions — they rarely match the exact tolerances BMC specifies.

Broader Maintenance Tips for BMC Full-Suspension Bikes

The Bolt Kit – No 12 is just one piece of proper care. Pair it with:

• Annual full linkage service (clean, grease, new seals)
• Regular shock and fork maintenance
• Checking all thru-axles and dropper post bolts
• Keeping pivots free of mud buildup after wet rides

BMC Thru Axle Kit – No 1

BMC’s engineering shines brightest when you stay on top of these small details.

Frequently Asked Questions About Bolt Kit – No 12

Is this kit only for the 2014 Fourstroke 02? Yes — it is model-specific. Newer Fourstroke bikes require different numbered kits.

Does it include bearings? No — this is a pure hardware kit. Bearings are sold separately in dedicated linkage kits.

How long does installation take? Most experienced mechanics finish in 45–90 minutes. First-timers should allow 2–3 hours.

Can I use it on other BMC models? No. Each “No. X” kit is tailored to specific frame designs and years.

Is the price worth it? Absolutely. At $59 you get a complete, ready-to-install set that saves hours of hunting individual parts and guarantees compatibility.

Final Thoughts: Keep Your BMC Fourstroke Feeling Factory-Fresh

The Bolt Kit – No 12 is a small investment that delivers big returns in performance, safety, and longevity. For owners of the iconic Fourstroke 02 29″, it’s the go-to solution when it’s time to refresh the suspension pivots.

Whether you ride aggressive XC trails, flowy singletrack, or just want that “new bike” feel again, installing this official kit is one of the smartest maintenance moves you can make. Head over to your authorized BMC dealer or the official site today and give your trusted Fourstroke the upgrade it deserves.

Ride smooth, ride safe, and enjoy every mile on your BMC!