The TRINX FLYBIRD 3.5 is a 20" (451) folding bike engineered for urban commuting and speed-focused riding. The aluminum frame and fork keep the bike lightweight and strong, with a compact fold for easy transport and storage. Braking is handled by RSX hydraulic disc brakes for confident stopping and a responsive feel. The drivetrain is a 1x10 LTWOO system (SHIFTER + RD), offering precise shifting. The PROWHEEL 53T crankset delivers strong high-speed performance. The 451 rim standard with a narrow 28 mm tire emphasizes speed and low rolling resistance for efficient riding.

• Ideal for riders who want a folding bike with sporty performance rather than just convenience.
• Folds easily for trains, cars, or condo storage.
• Setup can be adjusted to feel more like a sport bike than a traditional upright “city” folding bike.

Key Features

• Aluminum frame and fork—lightweight and durable
• 20" wheels (451) with 20 x 1 1/8 tires (28 mm width) — speed-oriented and grippy
• LTWOO 1x10 drivetrain (SHIFTER + RD A7)—accurate gear changes
• RSX hydraulic disc brakes—confident stopping power and quality calipers
• PROWHEEL 53T x 170L crank (Hollow CNC)—lightweight, CNC-machined aluminum appearance
• Double-bearing front hub / Four-bearing rear hub—smooth rolling and durability
• Folding handlebar/stem and alloy seatpost—compact storage and easy adjustment

Specifications

Advantages Compared to Typical Folding Bikes

The TRINX FLYBIRD 3.5 strikes a balance between folding convenience and sporting performance — perfect for riders who want portability without sacrificing ride quality.