The SUNPEED ASTRO is a UCI officially certified performance aluminum road bike built for daily training, long-distance endurance rides and amateur road competitions.
It adopts lightweight seamless butted aluminum frame paired with a high-modulus full carbon front fork, fully internal cable routing & thru-axle design. This model is fully fitted with the authentic Shimano Tiagra R4720 2×10-speed hydraulic disc brake groupset, delivering precise shifting, powerful braking and outstanding overall ride stability.
Features
✅ UCI Official Certification
Frame passed strict UCI inspection, meets international road race competition standards, reliable for formal racing use.
✅ 19% Lighter Seamless Aluminum Frame
Optimized hydroformed seamless tube construction slashes frame weight by 19%, with smooth flat weld finishing and full internal routing for a clean premium look.
✅ High-Modulus Carbon Fiber Thru-Axle Fork
Vibration damping carbon front fork effectively absorbs road shock to reduce rider fatigue; thru-axle & internal routed design improves wheel rigidity.
✅ Upgraded T47 Threaded Bottom Bracket
25% stiffer pedaling rigidity vs traditional BB standards, larger contact area minimizes power loss, eliminates creaking issues and extends drivetrain lifespan.
✅ Shimano Tiagra R4720 2×10 Drivetrain & Hydraulic Brakes
Complete tier-2 road groupset with crisp, jam-free shifting and all-weather hydraulic disc stopping power.
✅ Integrated Hidden Aero Handlebar + Flip Lock Seat Clamp
One-piece aero integrated bar boosts steering stiffness; reverse-lock hidden seatpost clamp enables quick, secure height adjustment.
Specifications
Frame & Front Fork
- Frame: SUNPEED ASTRO ultra-light seamless butted aluminum frame, flat smooth welding craft, fully internal cable routing, thru axle design
- Front Fork: SUNPEED ASTRO high modulus carbon fiber fork, fully internal cable routing, thru axle design
Wheelset Parts
- Hub: ANV aluminum 5-pawl engagement hub
- Spokes: ED anti-rust coated spokes
- Rim: Aluminum DR30 double layer disc brake rim, 30mm rim depth
- Tire: Chaoyang 700*28C (60TPI) front and rear tires
Drivetrain System
- Shift Levers: SHIMANO Tiagra R4720 2×10 speed STI shift/brake levers
- Front Derailleur: SHIMANO Tiagra R4720 2-speed front derailleur
- Rear Derailleur: SHIMANO Tiagra R4720 10-speed rear derailleur
- Cassette: Sunrace HR10 11-32T 10 speed cassette
- Crankset: Senicx PR5 hollow one-piece aluminum crankset, 50/34T gear ratio
- Bottom Bracket: Senicx T47 threaded bottom bracket
- Chain: KMC 10 speed bicycle chain
Brake Components
- Front Brake Assembly: SHIMANO Tiagra R4720 hydraulic disc brake with 160mm brake rotor
- Rear Brake Assembly: SHIMANO Tiagra R4720 hydraulic disc brake with 160mm brake rotor
- Brake & Shift Levers: Integrated SHIMANO Tiagra R4720 hydraulic STI levers
Control & Contact Components
- Seatpost: 27.2mm diameter aluminum seatpost
- Seat Clamp: ANV hidden reverse locking seat clamp
- Saddle: ANV K785NP ergonomic road bike saddle
- Headset: ANV integrated headset
- Handlebar: Aluminum wind-cut integrated one-piece drop handlebar
Basic Physical Parameters
- Total Bike Weight: 9.45 KG for XS size with original factory configuration
Net Weight: 9.2kg M size
Geometry
