Fixed-Gear Drivetrain

Assembly

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Direct parts	6
Total parts	6
Used in	1 assembly
Class	Assembly

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A single chainring driving a fixed cog with no freewheel: the cog is threaded and locked to the hub, so the pedals always turn with the rear wheel and the rider modulates speed by resisting the pedals. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Fixed-Gear Drivetrain parts and their functions

6 top-level parts · 6 parts in total · full bill of materials below

Fixed-Gear Drivetrain parts diagram: 1 track crankset, 2 bottom bracket, 3 fixed cog, 4 lockring, 5 track chain, 6 chainring bolt set. 6 parts in 6 top-level items. — Fixed-Gear 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	Track Crankset	1×	48-52T chainring and arms
2	Bottom Bracket	1×	Sealed-bearing spindle unit threaded into the frame shell; track sprints put over 2,000 W through it, so high-preload bearings are standard.
3	Fixed Cog	1×	13-16T threaded cog
4	Lockring	1×	Left-hand-thread lockring
5	Track Chain	1×	1/8 in track chain
6	Chainring Bolt Set	1×	Chainring bolt set

3D model

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Build & assembly graph

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Bill of materials for Fixed-Gear Drivetrain

6 top-level lines · 6 rows shown · 6 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Track Crankset	track-crankset	1×	1	·	part
2	Bottom Bracket	track-bottom-bracket	1×	1	·	part
3	Fixed Cog	track-fixed-cog	1×	1	·	part
4	Lockring	track-lockring	1×	1	·	part
5	Track Chain	track-chain	1×	1	·	part
6	Chainring Bolt Set	track-chainring-bolts	1×	1	·	part

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Where the fixed-gear drivetrain is used

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

Bicycles & Cycling 1 Track Bicycle

Used in 1 assembly

Track Bicycle

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 $1–$300. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Sona Comstar sonacomstar.com ↗	Gurugram, IN	EV driveline & motors	1,000 pcs	8–12 wks
🇨🇳Zhejiang Shuanghuan shdrive.cn ↗	Yuhuan, CN	Gears & driveline	1,000 pcs	8–12 wks
🇮🇳Bharat Gears bharatgears.com ↗	Mumbai, IN	Automotive gears	1,000 pcs	8–12 wks
🇮🇳ZF India zf.com ↗	Pune, IN	Driveline & chassis	1,000 pcs	8–12 wks
🇨🇳Hangzhou Advance advancegroup.cn ↗	Hangzhou, CN	Gearboxes	1,000 pcs	8–12 wks