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China Bike Research project placeholder · Project placeholder; not a product photo
TFSA · TFSAFrame estimate
JH37 frameset
Cheapest credible strict manufacturer option for a light 40C race-gravel build, with a wide uncertainty interval.
Est. ¥8,300–9,000Estimated complete build · Approx. · 2026-08-06
- Tire
- 40 mm
- Drivetrain
- Electronic 2×12 standard build
- Claimed weight
- 850 g frame
- Frame standard
- T47
- Category
- Race gravel · drop-bar
- Availability
- Factory direct
Why consider it
- 850 g claim
- T47
- Very low frame price
What to verify
- Only 40C
- Aggressive weight claim deserves test evidence
Frame, category facts, support and manufacturing
- Frame material
- T800-claimed
- Cable routing
- Fully internal
- Tire
- 40 mm
- Category evidence
- Up to 40 mm Evidence: official source. Official 700C maximum 40C; 650B claim is wider.
- Internal frame storage
- No
- Mounts
- top-tube
- Manufacturing relationship
- Frame manufacturer
- Evidence confidence
- Medium
- China purchase
- Factory direct
- Warranty
- Verify for the exact seller and SKU
Frame manufacturer with aggressive weight claims and budget pricing; public model-specific fatigue and inspection evidence is limited.
Ask the seller in Chinese
请确认 TFSA JH37 frameset 的准确年份、配置和车架批次。请提供：
1. 车架和前叉准确材料；
2. 请提供安装目标外胎后的实测宽度、前叉/后下叉最小净空和轮圈内宽。
3. 五通、桶轴和尾钩标准；
4. 完整 BOM，不接受未经确认的同级替换；
5. 车架序列号、国内质保主体和退换条件。Price record and sources
¥2,300–3,0002026-08-06 · Reference range · Approximate current price
Verify current exact SKU and checkout total.
Each source is labelled by what it supports. Confidence applies only to that role.
TFSA JH37TFSA · Manufacturer product page · Product facts · PriceProduct facts: Medium–high · Price: Low · accessed 2026-08-06
Official frame claims for weight, T47, and clearance.
Compiled China carbon gravel market researchChina Bike Research · Research note · PricePrice: Medium · accessed 2026-08-06Archived evidence; no public link
Cross-checked compilation of public product pages, marketplace references, Chinese industry sources, and dated price observations. Approximate values require fresh verification.
Project-owned product image placeholdersChina Bike Research · Project asset · ImageImage: High · accessed 2026-08-07Project-owned local asset
Original SVG line illustrations used only when no verified model photograph is available. They do not depict a specific product.