The VeloBuild VB-TT-023 is a well-received, value-oriented carbon fiber time trial frame set with a stiff and stable ride, but it has notable issues with the stock cockpit (stem flex, slipping, low front end) and some quality control concerns, leading many to upgrade components.
Pros
- Good value for money, offering performance comparable to high-end brands at a lower cost
- Frame is stiff and fast, with users reporting personal records and high average speeds
- Well-packaged with quick shipping and good customer service from Chris at VeloBuild
- Good adjustability in the cockpit with multiple spacer options and modular design
Cons
- Stock stem is prone to cracking or slipping, even when torqued to spec, causing safety concerns
- Stock aerobar extensions are short, flat (0-degree), and lack side support, leading many to upgrade
- Limited internal storage; no integrated bento box (though rivets can be added on request)
- Quality control issues: missing parts, poorly finished fork steerers, incorrect saddle clamps
Key Facts
- T47 threaded bottom bracket (86.5mm shell width)
- Disc brake only, internal cable routing
- Frame weight 1,515g, fork 445g, handlebar 767g
Reviews & Ratings
The reviewer unboxes and examines a VeloBuild TT frame set, which they refer to as the 'VB tt23' and a collaboration project labeled 'cine concept X Val build'. They express excitement about the frame's design, paint job, and features. They note it is their first time building a TT bike and mention the frame's chunky, modern, 'RoboCop' aesthetic. They highlight the included components like carbon bottle cages, handlebars, and a painted seatpost. They are pleased to find a threaded T47 bottom bracket and note the clean brake mounts. They weigh the frame, fork, and handlebars, providing the recorded weights.
AI Summary
Pros
- The reviewer is 'very happy' and 'excited' about the frame.
- They love the custom 'disco' paint job and note the seatpost and stem are also painted to match for a 'nice solid unibody design'.
- They are 'happy about' the inclusion of three carbon bottle cages.
more pros in the video
Cons
- The reviewer mentions a past VeloBuild frame was damaged in a crash after 3-4 months and 'went straight into the bin', but this is not a critique of the current frame.
- They note building a TT bike will be a first for them with 'quite some surprises and learnings along the way', implying potential complexity, not a flaw in the frame.
Key Points
- The frame is a TT (time trial) frame.
- It is referred to as the 'VB tt23'.
- It features a collaboration paint job labeled 'cine concept X Val build'.
more key points in the video
The VeloBuild VB-TT-023 is a carbon fiber time trial frame set praised for its value and stable, stiff ride. Users appreciate the raw carbon aesthetic, responsive vendor support (Chris), and compatibility with SRAM wireless groupsets. However, common issues include a front end that is too low (requiring additional spacers), lack of a bike computer mount, poorly fitting rubber stem plugs, and missing torque instructions. The frame uses a T47 bottom bracket and is recommended for riders who prefer a conventional design.
AI Summary
Pros
- Good value for money
- Stable and stiff ride without being harsh
- Beautiful raw carbon finish
more pros in the review
Cons
- Front end too low for many riders; requires additional spacers (up to 4-9 cm) to achieve comfortable fit
- No included bike computer mount; must be purchased or 3D printed separately
- Rubber plugs for stem holes fall out easily
more cons in the review
Key Points
- T47 bottom bracket standard
- Raw carbon or painted options available
- Recommended size M for rider 182 cm / 85 cm inseam
more key points in the review
The Velobuild VB-TT-023 is a Chinese carbon fiber time trial/triathlon frameset with a T47 bottom bracket (86.5mm shell width) and disc brake compatibility. It is often compared to the Trek Speed Concept in geometry. The frame is praised for being stiff, fast, and offering good value. The stock cockpit includes a basebar, stem, and aerobar extensions (described as a copy of Vision TFE), with adjustable stack via included spacers (5mm, 10mm, 20mm). Builds typically weigh around 20-21 lbs (9-9.5 kg). Common builds use SRAM AXS groupsets with wireless blips and hydraulic brakes like RideRever Triva. Users note the frame is well-packaged and shipping is often quick (e.g., 3-4 weeks to US/UK). However, the stock stem and cockpit have been sources of issues, leading many to upgrade to aftermarket options like TriRig Alpha One or Winow extensions. Velobuild now offers an updated alloy stem that reportedly solves handlebar flex; users report it works well with carbon paste at 4 Nm. The alloy stem requires a C shim to prevent rubbing against the headtube when fully compressed. Other issues include seatpost slippage (one case of getting stuck), thru axle compatibility concerns (M12x1.5 vs UDH M12x1.0), and the need for longer stem screws to prevent tilting. Users have also shared solutions for Garmin mounting using 3D-printed parts and for using the Winow HB052 aerobar upside down to improve fit. The frame's UDH compatibility is debated; some users report that 13-speed SRAM XPLR derailleurs may not work properly due to tolerances. Custom decals can be applied under clear coat by Velobuild for an additional fee ($180). 3D-printed accessories such as BTA systems, toolboxes, and aerocovers are popular. The frame is now also sold by Dolan Bikes (as TR2) and Sunpeed (as Interstellar), indicating its popularity. Some users have reported carbon inconsistencies in the headtube area, but overall the bike receives high praise for performance and customer service, with one user rating it 10/10. Recent builds have used components like SRAM Force, Shimano Ultegra/Di2, and Ltwoo ERX, with total costs ranging from $3,000 to $4,000 USD. The seatpost slipping issue can be resolved by applying carbon paste inside the seat tube and torquing to 6.5 Nm. Proper headset preload is essential; the expander plug should be tightened securely, and the top cap bolt adjusted gradually to remove play without over-tightening.
AI Summary
Pros
- Good value for money, offering performance comparable to high-end brands at a lower cost.
- Frame is stiff and fast, with users reporting personal records and high average speeds.
- Well-packaged with quick shipping and good customer service from Chris at Velobuild.
more pros in the review
Cons
- Stock stem is prone to cracking or slipping, even when torqued to spec, causing safety concerns.
- Stock aerobar extensions are short, flat (0-degree), and lack side support, leading many to upgrade.
- Limited internal storage; no integrated bento box (though rivets can be added on request).
more cons in the review
Key Points
- T47 bottom bracket (86.5mm shell width)
- Disc brake compatible
- Geometry similar to Trek Speed Concept
more key points in the review
Where to Buy
VeloBuild New T47 Carbon Fiber Time Trial Frame Set Disc carbon TT bike frame Integrated Cables
Velobuild VB-TT-023 New T47 Carbon Fiber Time Trial Frame Set Disc Integrated Cables Carbon TT Frame
Specifications
Attributes
Included Components
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