Drivetrain

Assembly

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

Single-speed pedal drive: a tubular crankset on a sealed bottom bracket, an alloy sprocket, a half-link or standard 1/8 inch chain, and platform pedals tuned for a 55-60 gear-inch race ratio.

Direct parts	5
Total parts	15
Used in	1 assembly
Class	Assembly

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Single-speed pedal drive: a tubular crankset on a sealed bottom bracket, an alloy sprocket, a half-link or standard 1/8 inch chain, and platform pedals tuned for a 55-60 gear-inch race ratio. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Drivetrain parts and their functions

5 top-level parts · 15 parts in total · full bill of materials below

Drivetrain parts diagram: 1 crankset, 2 bottom bracket, 3 sprocket, 4 chain, 5 platform pedal. 15 parts in 5 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	Crankset 3 parts	1×	3-piece tubular cranks
2	Bottom Bracket 3 parts	1×	Sealed BB bearings
3	Sprocket	1×	36-45 tooth alloy ring
4	Chain	1×	1/8 inch single-speed chain
5	Platform Pedal	2×	Composite platform pedals

3D model

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Build & assembly graph

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Bill of materials for Drivetrain

5 top-level lines · 11 rows shown · 15 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Crankset 3 parts	bmx-race-bike-crankset	1×	1	5	assembly
1.1	Crank Arm	bmx-race-bike-crank-arm	2×	2	·	part
1.2	Crank Spindle	bmx-race-bike-spindle	1×	1	·	part
1.3	Crank Bolt	bmx-race-bike-crank-bolt	2×	2	·	part
2	Bottom Bracket 3 parts	bmx-race-bike-bottom-bracket	1×	1	6	assembly
2.1	Ball Bearing	ball-bearing	2×	2	·	part
2.2	Bottom Bracket Cup	bmx-race-bike-bb-cup	2×	2	·	part
2.3	Bottom Bracket Spacer	bmx-race-bike-bb-spacer	2×	2	·	part
3	Sprocket	bmx-race-bike-sprocket	1×	1	·	part
4	Chain	chain	1×	1	·	part
5	Platform Pedal	bmx-race-bike-pedal	2×	2	·	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 BMX Race Bike

Used in 1 assembly

BMX Race 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