BOMwiki the bill-of-materials encyclopedia
30,441,950 parts mapped · 192,925 items

This page is machine-generated and unverified (what this means). Treat details as provisional. If you know this hardware, weigh in or correct it directly with Edit.

Discussion History

Drivetrain

Assembly

A 1x12 setup: single 40-42T chainring with narrow-wide teeth, 10-44T cassette, and a clutch rear derailleur to keep the chain quiet on washboard. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Drivetrain parts and their functions

7 top-level parts · 7 parts in total · full bill of materials below
Drivetrain parts diagram: 1 crankset, 2 bottom bracket, 3 cassette, 4 chain, 5 clutch rear derailleur, 6 Shift/Brake levers, 7 pedals. 7 parts in 7 assemblies.
Drivetrain parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Crankset 1× Crank arms and chainring
2 Bottom Bracket 1× Sealed bearing unit (threaded BSA or press-fit) on which the crank spindle turns.
3 Cassette 1× 10-44T 12-speed
4 Chain 1× 12-speed roller chain, ~5.25 mm wide, sized for the long cage derailleur and big cassette.
5 Clutch Rear Derailleur 1× Clutch rear derailleur
6 Shift/Brake Levers 1× Brake/shift levers
7 Pedals 1× Two-bolt SPD-style clipless pedals that shed mud and allow walking in recessed cleats.

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model — STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly shared across products atomic part related product

Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.

Bill of materials for Drivetrain

7 top-level lines · 7 rows shown · 7 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Crankset gravel-crankset 1× 1 · part
2 Bottom Bracket gravel-bottom-bracket 1× 1 · part
3 Cassette gravel-cassette 1× 1 · part
4 Chain gravel-chain 1× 1 · part
5 Clutch Rear Derailleur gravel-clutch-derailleur 1× 1 · part
6 Shift/Brake Levers gravel-shifter-levers 1× 1 · part
7 Pedals gravel-pedal-pair 1× 1 · part

Where the drivetrain is used

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

Used in 1 assembly

Gravel Bike

Sourcing: possible vendors

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 $0.01–$2. How estimates work
VendorHQSpecialtyMOQLead time
🇮🇳Sundram Fasteners
sundram.com ↗ 		Chennai, IN Fasteners 10,000 pcs 3–5 wks
🇮🇳Lakshmi Precision Screws
lpsindia.com ↗ 		Rohtak, IN Fasteners 10,000 pcs 3–5 wks
🇨🇳Suzhou Escort
escort-fastener.com ↗ 		Suzhou, CN Fasteners 10,000 pcs 3–5 wks
🇨🇳Shanghai Tianbao
tbfastener.com ↗ 		Shanghai, CN Fasteners 10,000 pcs 3–5 wks
🇮🇳Sterling Tools
sterlingtools.in ↗ 		Faridabad, IN Fasteners 10,000 pcs 3–5 wks