The TanTan TT-X38 is a lightweight, aero-focused Chinese carbon frameset that offers excellent value for money, with a comfortable ride and modern features like hidden cable routing and T47 bottom bracket. However, it may lack refinement on rough roads, require patience during assembly, and have geometry that doesn't suit all riders.
Pros
- Lightweight (approximately 1100g unpainted) and affordable (~$700 including shipping).1
- Super aero profile, similar to Scott Foil RC Pro.12
- Comfortable ride despite aggressive look.1
- T47 bottom bracket compatibility and full hidden cable routing.1
- Can fit 36mm tires for bikepacking comfort.2
- Unique look compared to other Chinese frames.1
- Chunky but comfortable seat post.1
- Erzero dropbar system cleans up cockpit and allows easy tribar attachment/detachment.2
Cons
- Lacks refinement over rough roads.1
- Not as stiff as more expensive frames.1
- Geometry may not suit all riders (stack and head tube are tall).1
- Requires patience to align components (e.g., calipers).1
- Unpainted frame may cause headset bearing rattle.1
- Limited saddle adjustment range.1
- Single chainring setup (48T) may be too large for steep hills.2
Key Facts
- Claimed weight approximately 1100g unpainted (size not specified).1
- Price around $700 including shipping.1
- T47 bottom bracket compatibility.1
- Full hidden cable routing.1
- Tire clearance up to 36mm.2
- Frame design resembles Scott Foil RC Pro.12
- Compatible with Erzero handlebar system with tribar mount support.2
Reviews & Ratings
23:52The reviewer discusses the Tantan X38 Aero frame set extensively throughout the video. They highlight its super aero profile, lightweight construction (approximately 1100 grams unpainted), and affordable price point of around $700 including shipping. The frame is described as unapologetically aero, resembling the Scott Foil RC Pro, and offers a comfortable ride despite its aggressive look. The reviewer mentions the frame's geometry is suitable for most people but notes it lacks refinement over rough roads compared to more expensive frames. They also discuss the frame's compatibility with various components, including a T47 bottom bracket and hidden cable routing.
A user built a TanTan TT-X38 road bike with custom modifications including an Erzero dropbar system with tribar mount support, XMCS rims, and a single chainring setup. The bike is being used for bikepacking and touring, with the owner planning a 2.5-month trip to Japan.
AI Summary
Pros
- Can fit 36mm tires for bikepacking comfort
- Erzero dropbar system cleans up cockpit and allows easy tribar attachment/detachment
- XMCS rims are stiff, light, and handle crosswinds well
more pros in the review
Cons
- Single chainring setup (48T) may be too large for steep hills
- Aggressive road bike position may be uncomfortable for some bikepackers
- Erzero handlebar availability limited (primarily on Taobao)
more cons in the review
Key Points
- Frame: TanTan TT-X38 (Chinese carbon)
- Tire clearance: Up to 36mm
- Drivetrain: Single chainring (48T) with SRAM Rival AXS RD 12-speed and 11-36 cassette
more key points in the review
Where to Buy

TanTan Cycling Aero Road Bike carbon Frame TT-X38 T47 Thread Racing Bicycle Full Hidden Cable Available

TanTan Aero Road Bike Frame TT-X38 T47 Thread Racing Bicycle Full Hidden Cable Available Size 47/49/52/54/56/58cm

TanTan Red Water Ripple Paint Carbon Fiber Disc Brake Road Bike Frame TT-X38 stem+handlebar Max Tire 700X32C

TanTan Chameleon Paint Full Hidden Cable T47 Thread Disc Road Bike Frame TT-X38 Available 47/49/52/54/56/58cm Size
Specifications
Attributes
Included Components
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