For riders seeking an affordable yet high-performance mountain bike, the Trifox Carbon Hardtail Frame (SDY20) stands out as a game-changer. This lightweight carbon frame is designed for budget-conscious cyclists who refuse to compromise on quality, making it an ideal foundation for building a custom MTB that excels on trails without draining your wallet.

Why the Trifox SDY20?

Weighing just 1,100 grams, this frame combines the strength and vibration-damping benefits of carbon fiber with a minimalist hardtail design. Its ultra-light build enhances climbing efficiency and maneuverability, while the absence of rear suspension reduces weight and maintenance costs—perfect for cross-country riders and trail enthusiasts prioritizing speed and simplicity.

Key Features:

Boost Hub Compatibility: The 148x12mm rear spacing boosts stiffness and traction, ensuring better power transfer and compatibility with modern wheelsets.

Optimized Geometry: A slack head tube angle (66.5°) and longer reach provide stability on descents, while the short chainstay keeps the bike nimble on climbs and tight turns.

Internal Cable Routing: Clean aesthetics and protection from dirt and debris, ideal for all-weather riding.

Versatile Build Options: Compatible with 29" or 27.5" wheels and a 100–120mm suspension fork, allowing customization for your riding style.

Budget-Friendly Performance

Starting at under $500 for the frame, the SDY20 lets riders invest in a premium carbon foundation while saving on components. Pair it with mid-tier parts like a SRAM NX drivetrain or RockShox Judy fork, and you’ll have a trail-ready bike that rivals off-the-shelf models costing twice as much. Plus, its durability ensures long-term value, withstanding rugged terrain without the bulk of aluminum frames.

Who Is It For?

This frame is ideal for DIY enthusiasts eager to build a lightweight MTB tailored to their needs. Whether you’re upgrading an old bike or starting fresh, the SDY20 offers a cost-effective path to a high-performance ride.



The Trifox SDY20 proves that lightweight, durable mountain biking doesn’t require a luxury budget. By prioritizing smart engineering over flashy extras, it delivers exceptional value for riders who want to tackle trails with confidence—and cash to spare for future upgrades.