Description

BMC Fourstroke FS01 29 XX1: The Ultimate Cross-Country Mountain Bike for Speed and Agility

In the world of mountain biking, few models have left as lasting an impression as the BMC Fourstroke FS01 29 XX1. This high-performance cross-country bike combines cutting-edge engineering with lightweight materials to deliver an exhilarating ride that’s perfect for racers and trail enthusiasts alike. Whether you’re tackling steep climbs or navigating technical descents, the Fourstroke FS01 29 XX1 stands out for its efficiency, responsiveness, and overall versatility. In this comprehensive guide, we’ll dive deep into what makes this bike a standout choice, exploring its specs, features, and real-world performance to help you decide if it’s the right fit for your adventures.

BMC, a Swiss brand renowned for its precision and innovation, introduced the Fourstroke series as a pinnacle of XC racing technology. The Fourstroke FS01 29 XX1, launched around 2014, was designed with big-wheel geometry in mind, optimizing 29-inch wheels for better rolling efficiency and stability. This model quickly gained popularity among competitive riders due to its carbon fiber construction and advanced suspension setup. Even years later, it remains a sought-after option for those who value a blend of speed and control on varied terrain.

What sets the Fourstroke FS01 29 XX1 apart is its focus on balancing race-ready performance with everyday rideability. It’s not just about winning podiums; it’s about enjoying the flow of the trail while pushing your limits. If you’re searching for a bike that excels in cross-country marathons or weekend explorations, keep reading as we break down every aspect of this iconic machine.

The Design and Build Quality of the Fourstroke FS01 29 XX1

At the heart of the Fourstroke FS01 29 XX1 is its premium carbon fiber frame, which weighs in at around 2,070 grams including the shock and hardware. This lightweight yet robust construction ensures the bike feels nimble without sacrificing durability. BMC’s engineers employed their Big Wheel Concept (BWC) geometry, which tailors the frame to maximize the advantages of 29-inch wheels. This includes a low bottom bracket for improved stability, short chainstays measuring 445mm for quick handling, and a slacker head tube angle of about 70 degrees that enhances confidence on descents.

The frame’s stiffness is particularly noteworthy, providing excellent power transfer during pedaling. Riders often praise how the Fourstroke FS01 29 XX1 responds instantly to inputs, making it ideal for accelerating out of corners or sprinting up hills. The carbon layup is meticulously crafted to absorb vibrations while maintaining rigidity, resulting in a smooth ride over rough sections. Additionally, the bike features a 142x12mm through-axle rear dropout, which adds to the overall torsional strength and wheel alignment precision.

Aesthetically, the Fourstroke FS01 29 XX1 boasts clean lines with internal cable routing for a sleek look. Available in striking color schemes like red and black, it turns heads on the trail. The frame also accommodates practical elements, such as bottle cage mounts and protective guards against chain slap. For those upgrading from older models, the integration of modern standards like post-mount brakes makes maintenance straightforward.

When considering build quality, it’s clear that BMC didn’t cut corners. The Fourstroke FS01 29 XX1 comes equipped with high-end components that complement the frame perfectly, ensuring longevity and reliability. This attention to detail extends to the smallest parts, like the ergonomic seatpost and handlebar setup, which promote comfort during long rides.

Fourstroke 01 (XX1)

Suspension System: Efficiency Meets Comfort

One of the standout features of the Fourstroke FS01 29 XX1 is its Advanced Pivot System (APS) suspension, delivering 100mm of rear travel paired with a matching 100mm Fox Float fork up front. This dual-suspension setup is tuned for cross-country efficiency, minimizing bob during pedaling while providing ample plushness for absorbing bumps and roots.

The APS design uses a dual-link configuration that keeps the rear wheel tracking the ground faithfully, enhancing traction on climbs and descents. Riders report that the Fourstroke FS01 29 XX1 pedals like a hardtail when locked out but transforms into a capable trail bike when open. The Fox Float CTD shock allows for easy adjustments with Climb, Trail, and Descend modes, letting you fine-tune the ride based on terrain.

In practice, this suspension excels in maintaining momentum over technical sections. The 29-inch wheels roll over obstacles with ease, and the low bottom bracket drop (around 60mm) keeps your center of gravity planted for better control. Whether you’re hammering smooth fire roads or dodging rocks on singletrack, the Fourstroke FS01 29 XX1’s suspension strikes a perfect balance between responsiveness and compliance.

Maintenance is user-friendly too, with accessible pivot points and standard shock mounting. For those who ride in wet conditions, the sealed bearings help prevent premature wear. Overall, this system contributes significantly to the bike’s reputation as a versatile performer, bridging the gap between pure racing machines and all-day adventure bikes.

BMC fourstroke FS01 29 29er Full Suspension user reviews : 4.8 out of 5 – 4 reviews – mtbr.com

Drivetrain and Components: Precision Engineering

The “XX1” in Fourstroke FS01 29 XX1 refers to the SRAM XX1 drivetrain, a 1×11 setup that’s legendary for its simplicity and reliability. With a wide-range cassette (typically 10-42t) and a narrow-wide chainring, this system eliminates the need for a front derailleur, reducing weight and mechanical complexity. Shifts are crisp and precise, even under load, thanks to the Type 2 rear derailleur’s clutch mechanism that minimizes chain slap.

Complementing the drivetrain are high-quality brakes, often Shimano XTR or equivalent, providing powerful modulation with 160-180mm rotors. The cockpit features Easton components, including a short stem (80-90mm) and wide bars (around 700mm), promoting an aggressive yet comfortable riding position. Wheels are typically Easton EA90 or similar, tubeless-ready for lower pressures and better grip.

Tires on the Fourstroke FS01 29 XX1 are usually Continental Race King or Schwalbe Racing Ralph, offering low rolling resistance for speed while providing enough knob for traction. The overall build weighs about 23-24 pounds, making it one of the lighter full-suspension XC bikes in its era. This component selection ensures the bike is race-ready out of the box, with upgrades possible for personalization.

For daily use, the drivetrain’s durability shines through, requiring minimal adjustments even after muddy rides. If you’re into bikepacking or long-distance events, the Fourstroke FS01 29 XX1’s efficient gearing makes it a joy for sustained efforts.

Performance on the Trail: Real-World Testing

Putting the Fourstroke FS01 29 XX1 through its paces reveals why it’s beloved by XC enthusiasts. On climbs, the efficient suspension and lightweight frame allow for effortless power delivery – you’ll feel like you’re floating uphill. The 73.5-degree seat tube angle positions you optimally over the pedals, reducing fatigue on long ascents.

Descending is where the BWC geometry truly excels. The 70-degree head angle and stable wheelbase inspire confidence, letting you carry speed through corners and over drops that might intimidate on a pure race bike. Reviewers note its surprising capability on technical trails, handling roots and rocks better than expected for a 100mm travel machine.

In mixed terrain, the Fourstroke FS01 29 XX1 shines with its agility. Short chainstays make it playful for pumping and manualing, while the big wheels maintain momentum. During group rides or races, it accelerates quickly, helping you close gaps or sprint for the line. Windy singletracks become a playground, with the bike’s stiffness ensuring precise steering.

Compared to contemporaries like the Specialized Epic or Scott Spark, the Fourstroke FS01 29 XX1 holds its own in efficiency but edges out in fun factor. It’s not the plushest for all-out downhill, but for 80% of trails, it’s more than capable. Riders of all skill levels appreciate how it builds confidence, encouraging you to push harder.

BMC Fourstroke FS01 29

Pros and Cons of the Fourstroke FS01 29 XX1

Like any bike, the Fourstroke FS01 29 XX1 has its strengths and weaknesses. Pros include exceptional pedaling efficiency, lightweight carbon construction, versatile geometry for racing and trails, reliable SRAM XX1 drivetrain, and confidence-inspiring handling. It’s a bike that rewards aggressive riding while remaining comfortable for hours.

On the cons side, the 100mm travel limits it on very rough terrain, and the price point (originally around $8,500) might deter budget-conscious buyers. Some riders find the stock tires too slick in wet conditions, suggesting an upgrade for all-weather use. Additionally, as an older model, sourcing specific parts could be challenging, though the standard specs make it adaptable.

Overall, the pros far outweigh the cons for those focused on cross-country performance.

Who Should Consider the Fourstroke FS01 29 XX1?

This bike is ideal for competitive XC racers, marathon enthusiasts, or trail riders seeking a fast, efficient machine. If you prioritize speed over plushness and enjoy bikes that feel alive under you, the Fourstroke FS01 29 XX1 is a match. Beginners might find it too race-oriented, but intermediate to advanced riders will love its potential.

For sizing, it comes in small, medium, and large, with geometry that fits a wide range of heights. If you’re upgrading from a hardtail, this full-sus will open new doors without overwhelming you.

Maintenance and Upgrades for Longevity

Keeping your Fourstroke FS01 29 XX1 in top shape involves regular checks on the suspension pivots, drivetrain cleaning, and tire pressure monitoring. BMC recommends annual shock servicing, and the carbon frame benefits from protective tape on high-wear areas.

Upgrades could include a dropper post for more aggressive riding or carbon wheels for weight savings. With proper care, this bike can last for years, retaining value on the used market.

Conclusion: Why the Fourstroke FS01 29 XX1 Still Rules

The BMC Fourstroke FS01 29 XX1 remains a benchmark in cross-country mountain biking, blending Swiss precision with trail-ready performance. Its lightweight design, efficient suspension, and reliable components make it a joy to ride, whether competing or exploring. If you’re in the market for a bike that delivers speed, agility, and fun, look no further. The Fourstroke FS01 29 XX1 isn’t just a bike – it’s an experience that elevates every outing.