Drivetrain

Assembly

Lag screws aka lag bolts 002.png · Commons ↗ Report photo

1x drivetrain: cranks turn a chainring driving the chain across a wide-range cassette, indexed by a rear derailleur and shifter, on bottom-bracket bearings.

Direct parts	8
Total parts	13
Used in	1 assembly
Class	Assembly

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1x drivetrain: cranks turn a chainring driving the chain across a wide-range cassette, indexed by a rear derailleur and shifter, on bottom-bracket bearings. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Drivetrain parts and their functions

8 top-level parts · 13 parts in total · full bill of materials below

Drivetrain parts diagram: 1 crank arm, 2 chainring, 3 ball bearing, 4 pedal, 5 chain, 6 cassette, 7 rear derailleur, 8 shifter. 13 parts in 8 top-level items. — Drivetrain 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	Crank Arm	2×	Left + right crank arms
2	Chainring	1×	Narrow-wide chainring
3	Ball Bearing	2×	Bottom-bracket bearings
4	Pedal	2×	Flat/clipless pedals
5	Chain	1×	Roller chain transmitting torque from chainring to cassette.
6	Cassette	1×	Wide-range cassette
7	Rear Derailleur 2 parts	1×	Sprung parallelogram steering the chain across the cassette via two jockey wheels.
8	Shifter	1×	Trigger shifter

3D model

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Build & assembly graph

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Bill of materials for Drivetrain

8 top-level lines · 10 rows shown · 13 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Crank Arm	mtb-crank-arm	2×	2	·	part
2	Chainring	mtb-chainring	1×	1	·	part
3	Ball Bearing	ball-bearing	2×	2	·	part
4	Pedal	mtb-pedal	2×	2	·	part
5	Chain	mtb-chain	1×	1	·	part
6	Cassette	mtb-cassette	1×	1	·	part
7	Rear Derailleur 2 parts	mtb-rear-derailleur	1×	1	3	assembly
7.1	Jockey Wheel	mtb-jockey-wheel	2×	2	·	part
7.2	Coil Spring	coil-spring	1×	1	·	part
8	Shifter	mtb-shifter	1×	1	·	part

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Where the drivetrain is used

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

Bicycles & Cycling 1 Mountain Bike

Used in 1 assembly

Mountain Bike

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 $0.01–$2. How estimates work

Vendor	HQ	Specialty	MOQ	Lead 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