The XMCS Gran Turismo frameset offers excellent build quality and value with one-piece molded carbon construction, but has some early quality control issues and limited tire clearance.
Pros
- One-piece molded construction for strength and smooth interior
- Excellent build quality and finish with top-tier carbon layup
- Clean internal construction with no visible joints
- Good finishing on critical areas (headset seats, bottom bracket threads)
Cons
- Nude finish makes blemishes more visible (one small speck noted on top tube)
- Not as high quality as premium brands like Evolved Chamers
- Does not come with a manual or some expected accessories
- Seat post design appears backwards (sharper end at front)
Key Facts
- One-piece molded frame construction (no adhesive joints)
- Frame weight: 987-997g (size M/56, raw carbon)
- Fork weight: 383-393g (uncut)
Reviews & Ratings

The reviewer provides a detailed analysis of the XM Carbon Speed XMCS Gran Turismo frameset. They note it is a one-piece molded frame, which is complex and expensive to manufacture, contrasting it with typical multi-piece frames that have adhesive joints. The frame arrives with a fork, handlebars, seat post, headset spacers, bearings, and other accessories. It has a nude carbon finish with clear lacquer, a T47 bottom bracket, internal routing, an oversized headset, and dropped seat stays. The reviewer highlights the clean internal construction with no visible joints, good finishing on critical interfaces, and overall solid build quality. They mention it is not as high-end as brands like Evolved Chamers and lacks some accessories like a manual, but it is also not as expensive. They plan to build and ride it for further subjective feedback.
AI Summary
Pros
- One-piece molded construction (no adhesive joints, stronger)
- Clean internal construction with no visible joints
- Good finish on critical areas (headset seats, bottom bracket threads)
more pros in the video
Cons
- Nude finish makes blemishes more visible (one small speck noted on top tube)
- Not as high quality as premium brands like Evolved Chamers
- Does not come with a manual or some expected accessories
more cons in the video
Key Points
- Frame is one-piece molded, not multi-piece with adhesive joints
- Frame weight: 987g
- Fork weight: 393g
more key points in the video

The reviewer discusses the XMCS Gran Turismo (also referred to as Carbon Speed) frame, highlighting its one-piece construction, competitive pricing, and overall high frame quality. He notes that the frame is made in a single mold, which is technically complex and results in a smooth interior with no overlapping joints, making cable routing easy. The frame is EPS molded, leading to a better finish. However, he experienced issues with some finishing components, such as a poorly threaded compression nut and a faulty upper headset bearing. Despite these, he praises the customer service and considers the frame a high-quality product that undercuts competitors like Winspace and Elves.
AI Summary
Pros
- One-piece frame construction is advanced and results in a smooth interior
- EPS molding gives a good finish with no ripples
- Frame quality is extremely good overall
more pros in the video
Cons
- Compression nut had poor threading, required tapping
- Upper headset bearing needed replacement quickly
- One of the plug holes was slightly elliptical and needed cleaning
more cons in the video
Key Points
- Frame is made in one piece (one mold), not multi-piece with lap joints
- EPS molded for better internal finish
- T47 bottom bracket (86.5mm standard)
more key points in the video
The XM Carbon Speed XMCS Gran Turismo frameset is an aero road bike with endurance geometry, featuring high stack and low reach for a comfortable yet aerodynamic riding position. It uses T800 carbon fiber with T47 bottom bracket (T47i internal preferred for stiffness/aero), UDH hanger, and internal cable routing. The frame is praised for its build quality, smooth ride comfort, and stable handling due to long chainstays (422mm). Price ranges from ~$1009 (unpainted) to ~$1350 (painted with handlebar). Weight is approximately 997g for frame (size 56, raw carbon) and 383g for fork. Paint jobs are available but decals (especially "Revenger") are controversial; newer frames may have fewer mandatory decals. Some early units had seatpost tolerance issues (sticking), but manufacturer states these are resolved in later production.
AI Summary
Pros
- Excellent build quality and finish, with top-tier carbon layup and attention to detail
- Comfortable yet aerodynamic ride, with smooth handling and good stability (especially descending)
- Good value for money compared to Western brands, with responsive customer service from Peter/XMCS
more pros in the review
Cons
- Early production frames had seatpost tolerance issues causing sticking/seizing, even without carbon paste
- Slack seat tube angle (73°) combined with setback seatpost may limit forward saddle position for some riders
- Limited tire clearance (max ~35mm with 4mm clearance), and long chainstays don't improve clearance
more cons in the review
Key Points
- T800 carbon fiber construction
- T47 bottom bracket (preferably T47i internal)
- Endurance geometry: high stack, low reach
more key points in the review
Where to Buy
Specifications
Attributes
Included Components
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