Evidence reviewed through . Price records retain their own observation dates and conditions.View sourcesMethodology and dataset
JH37 frameset
- Use
- Race gravel
- Tire clearance
- 40 mm
- Weight
- 850 g frame
- Frame standard
- T47, 48 mm × 86 mm shell
- Category
- Race gravel · drop-bar
- Availability
- Factory direct
850 g frame with 40 mm tire clearance
Cheapest credible strict manufacturer option for a light 40C race-gravel build, with a wide uncertainty interval.
The displayed Est. ¥8,512 estimate adds the adjustable ¥6,000 build allowance to the latest frame price. Best suited to ultra-budget custom builder, light race build.
Key hardware: T800-claimed frame; 850 g frame weight; tire clearance 40 mm.
Specifications and evidence
- Bottom bracket
- T47, 48 mm × 86 mm shell
- Frame weight
- 850 g
- Weight basis
- Size 50; paint adds approximately 20–100 g
- Included package
- frame, fork, small parts; verify exact package
- Fit range
- 4 sizes (470–560) · stack 515–570 mm · reach 363–390 mm
- Purchase route
- TFSA企业1号店 Taobao item 670337545285. The exact 铁灰色+黑 / 50码 selection was listed in stock for 15-day preorder dispatch; verify package contents, coupon eligibility and final checkout before purchase.
- Frame material
- T800-claimed
- Stiffness evidence
- No exact-model instrumented stiffness result or attributable JH37 owner ride assessment was found after the 50-area sweep. A forum reply about a different TFSA road frame was rejected as sibling-model evidence.
- Cable routing
- Fully internal
- Use
- Race gravel
- Category evidence
- Category: Race gravel.
- Internal frame storage
- No
- Mounts
- top-tube
- China purchase
- Factory direct
Ride and buying context
850 g claim. T47. Very low frame price.
What to verify
Only 40C. Aggressive weight claim deserves test evidence.
About TFSA
Frame manufacturer with aggressive weight claims and budget pricing; public model-specific fatigue and inspection evidence is limited.
Visit the official TFSA websitePrice record and sources
Exact selected option 铁灰色+黑 / 50码, SKU 5918666587011. The listing showed ¥2,730 before a ¥218 满2400减218 coupon and ¥2,512 after it, with stock, 15-day preorder dispatch and domestic SF shipping included. This is an option-level listed price, not a completed checkout total; coupon eligibility and final settlement can change.
Verify current exact SKU and checkout total.
Each source is labelled by what it supports. Confidence applies only to that role.
Current exact-model manufacturer page states an 850 g size-50 frame with paint adding approximately 20–100 g, T47 threaded 48 mm diameter by 86 mm shell, fully internal routing and 700x40C maximum. The manufacturer route is quote-only and does not expose a retail checkout price or a geometry table.
The signed-in public listing identifies item JH-37. Selecting 铁灰色+黑 and 50码 produced SKU 5918666587011, a ¥2,730 listed price and a displayed ¥2,512 price after a ¥218 满2400减218 coupon. Stock was shown with a 15-day preorder dispatch and domestic SF shipping included. Checkout was not completed. The exact-model detail image supplies the four-row geometry chart; only unambiguous dimensions were transcribed. No buyer, account, delivery-address or transaction data is retained.
Cross-checked compilation of public product pages, marketplace references, Chinese industry sources, and dated price observations. Approximate values require fresh verification.