The BXT GRAVEL 135 is a budget-friendly carbon gravel frameset praised for its excellent value, lightweight, and good ride quality. Users report minor issues such as headset play, handlebar gap, and limited tire clearance, but overall it is considered a solid choice for the price.
Pros
- Excellent value for money, with prices around £300-€570.12
- Lightweight build; complete bikes weigh between 8.8kg and 9.9kg.34
- Good ride quality: smooth, comfortable, and handles various terrains well.56
- Comes with all necessary accessories (fork, seatpost, handlebars, thru-axles, bearings, seat clamp).1
- Compatible with modern components such as SRAM AXS, Shimano GRX, and electronic groupsets.647
- Good tire clearance for gravel (up to 45-50mm depending on position).12
- No major issues reported after 2,000 km of riding.5
- Aesthetically pleasing with multiple color options, including transparent red two-tone.45
Cons
- Headset issues: bearing may not press in fully, and headset play reported by multiple users.13
- Gap in integrated handlebars due to bearing thickness; requires modification or thinner bearing.8
- Rear tire clearance limited to 45mm; 47mm tires do not fit.26
- Included bottle cages are weak and may not hold bottles securely.2
- Some paint overspray and minor cosmetic imperfections.1
- Assembly can be challenging for inexperienced builders, requiring trial and error.43
- Potential quality concerns with Chinese carbon frames, though no major failures reported.45
Key Facts
- Frame material is carbon fiber, with visible weave in some finishes.12
- Seatpost diameter is 27.2mm round.2
- Brake mounts are flat mount, with fork rated for 160mm rotors and frame for 140mm.25
- Thru-axle sizes: 12x100mm front, 12x142mm rear.2
- Features a UDH (Universal Derailleur Hanger).1
- Claimed tire clearance: up to 50mm front, 45mm rear (official spec). Actual measurements show 45mm rear is max, with ~8mm clearance to derailleur.125
- Weight of frameset approximately 1.3kg (measured with luggage scales).1
- Price range: £300-€570 depending on source and configuration.12
Sources
- 1Cus Baker£319 Carbon Gravel Frame — Bargain or Big Mistake?
- 2MTB-News[A]ufbau BXT 135 Gravel - low budget
- 3r/ChineseCarbonnew built bike day
- 4r/ChineseCarbonbxt 135 gravel build grx 820 elitewheels slr
- 5Cycling, Cameras and Coffee.Hand-Built BXT Gravel Bike | 6 Months / 2,000km Update | Sensah SRX Groupset & Elitewheels ENT.
- 6r/gravelcyclingframe swap bxt 135
- 7r/ChineseCarbonbxt 135 gravel build
- 8ChinertownBxt gravel 135
Reviews & Ratings
14:10The reviewer has been using the BXT GRAVEL 135 carbon frame for over 6 months and 2,000 km. They report being very impressed with its durability, comfort, and performance across various terrains.
15:46The reviewer purchased a BXT gravel bike frame for approximately £300 after searching for the cheapest options. They unbox and examine the frame, noting it arrived in 4-5 weeks. The packaging was basic but protective. The frame is a matte-painted carbon model called the 'Gravel 135' with a UDH rear derailleur hanger, includes a seat post, handlebars, fork, and all necessary accessories like a thru-axle, bearings, and seat clamp. They are generally impressed with the initial quality for the price, noting the carbon weave is visible, the frame feels solid, and it has 50mm tire clearance. However, they note minor issues like paint overspray, a questionable headset bearing measurement printed on the frame, and a potentially loose bearing fit. They plan to build it with parts from their current bike to test ride it.
The BXT 135 gravel build by user NicBy features a Chinese carbon frame with electronic groupset and 50mm wheels, costing 1850 euros. The build received positive feedback on Reddit, with users discussing components like Wheeltop groupset and CSC wheels.
AI Summary
Pros
- Affordable total cost of 1850 euros
- Electronic shifting (Wheeltop GeX) performs as well as Di2
- CSC wheels are maintenance-free after 3000km
more pros in the review
Cons
- Import taxes not included in total cost (question raised)
- Some users experienced brake mount alignment issues (not OP)
- Battery charge on Wheeltop may not hold well (hearsay)
Key Points
- Frame: BXT 135 black matte (nearly 1:1 replica of Scott Addict Gravel)
- Groupset: Wheeltop GeX (electronic)
- Cassette: Goldix 11-52
more key points in the review
A user built a BXT GRAVEL 135 bike with Chinese carbon components, reporting it as an enjoyable, sub-9kg machine despite being new to cycling and encountering minor assembly issues.
AI Summary
Pros
- Lightweight build under 9kg
- High-quality components (Elitewheels, LTwoo ERX groupset)
- Positive riding experience
more pros in the review
Cons
- Headset play requiring makeshift fixes
- Front brake movement under load
- Potential headset bearing exposure to dirt
more cons in the review
Key Points
- Frame: BXT GRAVEL 135
- Weight: 8.8kg without top bag
- Wheels: Elitewheels ENT 50mm disc
more key points in the review
A user shares their experience with the BXT Gravel-135 frameset, detailing a frame swap from a Carbonda 696 to the BXT 135, resulting in a lighter build at just over 20 lbs. They discuss the bike's geometry, tire clearance, and component compatibility, noting it's a temporary frame with plans to upgrade to an Enve Mog or Rodeo Traildonkey. Other users inquire about sizing, chainring capacity, and ride quality, with positive feedback on its performance and handling.
AI Summary
Pros
- Lightweight build (just over 20 lbs)
- Good geometry for taller riders with a shortened seat tube and sloped top tube
- Fun and aggressive ride quality, suitable for racing
more pros in the review
Cons
- Limited tire clearance (max 47c, tight fit for 50c tires)
- Not a long-term frame for the user, who plans to upgrade
- Potential headset adjustment issues reported by another user
more cons in the review
Key Points
- Frame: BXT Gravel-135, size 56cm
- Max tire size: 47c, with tight clearance for larger tires
- Chainring compatibility: up to 44t likely, 46t may be pushing it
more key points in the review
A user built a BXT 135 gravel bike using a Chinese carbon frame paired with Shimano GRX 820 components and Elitewheels SLR wheels, achieving a total weight of 9.9 kg at a cost of approximately €1900. The build required significant assembly effort including headset installation, cable routing, and brake bleeding.
AI Summary
Pros
- Lightweight at 9.9 kg including accessories
- Cost-effective build at around €1900
- High-quality Shimano GRX 820 drivetrain and brakes
more pros in the review
Cons
- Significant assembly time and trial-and-error required
- Reliance on low-cost Aliexpress parts for accessories
- Unclear long-term durability of frame and components
more cons in the review
Key Points
- Frame: BXT 135 Gravel carbon frame
- Drivetrain: Full Shimano GRX 820 2x12-speed (48/31 crankset, 11-36T cassette)
- Wheels: Elitewheels SLR Gravel (38mm rim, 25mm internal width)
more key points in the review
The BXT GRAVEL 135 is a budget-friendly carbon gravel frame from AliExpress, typically priced around €540-€570 including shipping. It features a 27.2mm round seatpost, flat mount brakes, and clearance for up to 45mm tires at the rear and 50mm at the front. The frame is well-finished with clean carbon layup. Users appreciate the value but note that the included bottle cages are weak and the frame may require careful tire sizing.
AI Summary
Pros
- Excellent value for money, low price for a carbon frame
- Good build quality and clean paint finish
- Lightweight and responsive ride with carbon wheels
Cons
- Included bottle cages are weak and may not hold tools or bottles securely
- Rear tire clearance limited to 45mm; 47mm not possible
- Steerer tube spacers are not split, requiring custom solutions
Key Points
- Frame material: Carbon
- Seatpost diameter: 27.2mm round
- Brake mount: Flat mount
more key points in the review
Based on forum discussions, the BXT GRAVEL 135 is a gravel bike that users have built up for winter/mudguard use. Several users report a common issue with a gap in the integrated handlebars, which some have addressed by modifying components like bearings and split rings. The bike appears functional for builds, with at least one user reporting no problems during assembly.
AI Summary
Pros
- Suitable for winter/mudguard bike builds without major assembly issues
- Integrated handlebar gap issue does not seem to affect performance or bearings according to some users
Cons
- Common issue with large gap in integrated handlebars requiring modification
- Stock bearing thickness (7mm) may contribute to handlebar gap issue
Key Points
- Integrated handlebars
- Stock bearing thickness: 7mm
- Thinnest compatible bearing found: 6.5mm
Where to Buy
BXT Carbon Gravel Bike Frame Fully Hidden Cable Carbon Frame Fork Thru Axle Gravel Disc Brake Carbon MTB Road Bicycle Frame 27.5
BXT bxt-2026-new
Specifications
Attributes
Included Components
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Questions about BXT GRAVEL 135
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1Sizing & fit
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5Build & setup
2Ride & performance
5Durability & quality
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