Frame

Assembly

Aluminium melting crucible casting process.jpg · Commons ↗ Report photo

Double-butted 4130 chromoly main frame with relaxed 72-degree angles, long 45 mm chainstays, and clearance for 42 mm tyres plus fenders.

Direct parts	8
Total parts	11
Material	4130 chromoly steel
Used in	1 assembly
Class	Assembly
Status	unverified

Double-butted 4130 chromoly main frame with relaxed 72-degree angles, long 45 mm chainstays, and clearance for 42 mm tyres plus fenders. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Frame parts and their functions

8 top-level parts · 11 parts in total · full bill of materials below

Frame parts diagram: 1 top tube, 2 down tube, 3 seat tube, 4 head tube, 5 chainstay, 6 seatstay, 7 rear dropout, 8 bottom bracket shell. 11 parts in 8 top-level items. — Frame parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Top Tube	1×	Horizontal main rail
2	Down Tube	1×	Diagonal tube to bottom bracket
3	Seat Tube	1×	Vertical tube to seatpost
4	Head Tube	1×	Steering head socket
5	Chainstay	2×	Lower rear triangle tubes
6	Seatstay	2×	Upper rear triangle tubes
7	Rear Dropout	2×	Forged rear dropouts with eyelets
8	Bottom Bracket Shell	1×	68 mm threaded bottom-bracket shell

3D model

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Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour

product / assembly shared across products atomic part related product

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Bill of materials for Frame

8 top-level lines · 8 rows shown · 11 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Top Tube	touring-bicycle-top-tube	1×	1	·	part
2	Down Tube	touring-bicycle-down-tube	1×	1	·	part
3	Seat Tube	touring-bicycle-seat-tube	1×	1	·	part
4	Head Tube	touring-bicycle-head-tube	1×	1	·	part
5	Chainstay	touring-bicycle-chainstay	2×	2	·	part
6	Seatstay	touring-bicycle-seatstay	2×	2	·	part
7	Rear Dropout	touring-bicycle-dropout	2×	2	·	part
8	Bottom Bracket Shell	touring-bicycle-bb-shell	1×	1	·	part

Where the frame is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Bicycles & Cycling 1 Touring Bicycle

Used in 1 assembly

Frameset

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$200. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Bharat Forge bharatforge.com ↗	Pune, IN	Forgings & metal parts	500 pcs	6–10 wks
🇨🇳CITIC Dicastal dicastal.com ↗	Qinhuangdao, CN	Aluminium castings & wheels	500 pcs	6–10 wks
🇮🇳Tata AutoComp tataautocomp.com ↗	Pune, IN	Auto components	500 pcs	6–10 wks
🇸🇬Beyonics beyonics.com ↗	Singapore	Precision metal & mfg	500 pcs	6–10 wks
🇮🇳Sundaram Clayton sundaram-clayton.com ↗	Chennai, IN	Die castings	500 pcs	6–10 wks