The XDS X-LAB AD9/RT9 is a lightweight, competitively priced carbon race bike with pro-level components and aerodynamic performance, though it faces criticism for harsh ride quality, limited size range, and availability challenges.
Pros
- Very lightweight (frame ~550g, complete bike as low as 6.39 kg)
- Competitive price for pro-level components (under $9,000 USD)
- Stiff frame with good handling and sprinting capability
- Threaded T47 bottom bracket and UDH for easy maintenance
Cons
- Harsh ride quality, especially on rough roads
- Limited size range (only XS to L, largest ~56 cm equivalent)
- Proprietary handlebar/spacer system limits customization
- Frame finish easily scratched (improved in later batches)
Key Facts
- Frame weight 550g (claimed) using Tore T1100 and M40X carbon fiber
- Total bike weight ranges from 6.39 kg (14 lb 3 oz) to 7.79 kg depending on spec
- Price under $9,000 USD for top-tier build with Dura-Ace Di2 and carbon wheels
Reviews & Ratings
The reviewer tested the XDS X-LAB AD9/RT9, a lightweight carbon road bike with disc brakes. They praised its low weight (6.39 kg) and stiff frame but criticized the harsh ride quality, which they attributed to the carbon-spoked Branta wheels. The frame finish was easily damaged, though XDS claimed to have addressed this in later batches. The bike's limited size range and the wheels' resemblance to Zipp were also noted as negatives.
AI Summary
Pros
- Extremely light frame (550 g) and overall bike weight (6.39 kg)
- Stiff frame with good handling
- Round tube design reduces crosswind sensitivity
more pros in the video
Cons
- Harsh ride quality, especially on rough roads
- Carbon-spoked wheels are uncomfortable and feel like 'Flintstones car'
- Frame finish is easily scratched or marked (though later batches have improved coating)
more cons in the video
Key Points
- Frame weight: 550 g
- Total bike weight: 6.39 kg (14 lb 3 oz)
- Wheels: Branta C50 ULR, 50 mm deep, 22 mm internal width, carbon spokes
more key points in the video
The reviewer presents the XDS X-LAB AD9 as a new 2026 model race bike that he believes will challenge the bicycle industry. He highlights its professional specifications, competitive pricing under $9,000 USD, and performance features, noting it is used by Team Astana in the pro peloton. He shares his initial riding impressions and details the bike's components, aerodynamics, and design.
AI Summary
Pros
- Under $9,000 USD for a pro-level bike
- Full Shimano Dura-Ace Di2 groupset
- In-house carbon fiber cranks with integrated power meter (±1% accuracy)
more pros in the video
Cons
- Medium size sent by accident is slightly short for the reviewer
- Handlebar tape becomes slippery when wet from sweat
- Wheel nipples are internal, requiring tire removal for truing
more cons in the video
Key Points
- 2026 model year
- 15 lbs 15 oz (7.17 kg) in medium with pedals, power meter, cages, and mount
- Price under $9,000 USD
more key points in the video
cyclingnews.com
The reviewer states that the XDS X-LAB AD9 is an extremely competent aero road bike that performs comparably to WorldTour competitors, with neutral handling and good sprinting capability, though it is not the most exciting ride and has some purchasing limitations.
AI Summary
Pros
- Extremely competent and sure-footed
- Neutral but pleasing handling characteristics
- Good for high-wattage sprints
more pros in the blog post
Cons
- Not the most exciting to ride
- Cannot swap the cockpit at point of sale
- Harder to get hold of compared to more common brands
more cons in the blog post
Key Points
- Weight: 7.79kg (with pedals, computer mount, bottle cages and 30c tyres)
- Prices: $13,499 (Astana spec), $3,751 (frameset incl seatpost and cockpit)
- Sizes: XS, S, M, L, XL
more key points in the blog post
The XDS X-LAB AD9 (also referred to as RT9) is a lightweight carbon road bike discussed by forum users. It's compared to the Specialized Aethos, with users noting its competitive weight (around 6.1kg in a ready-to-ride setup with 50mm aero wheels) and potential as a more affordable alternative. Key attributes mentioned include its use of high-modulus carbon fiber to achieve low weight, IS52 headset standard for compatibility, and mixed signals about international availability. Users debate whether it's a direct Aethos competitor or knockoff, with some noting limited production and high costs.
AI Summary
Pros
- Competitive lightweight performance similar to high-end bikes like Specialized Aethos
- Potential price advantage over comparable lightweight bikes
- Uses standard IS52 headset for easy component compatibility
Cons
- Limited availability and unclear international distribution strategy
- Proprietary handlebar/spacer system that may limit customization
- Reportedly high production costs leading to limited production
Key Points
- Weight around 6.1kg in ready-to-ride setup
- Uses high-modulus carbon fiber construction
- IS52 headset standard
more key points in the review
Where to Buy
XDS X-LAB AD9
Specifications
Included Components
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