A group of CNC machined black gears, perfect for the BMX race market. These Promax 4-bolt 104 BCD Chainrings include a chainring for optimal performance.
A Promax 4-bolt 104 BCD chainring on a white background.
A Promax 4-bolt 104 BCD Chainring designed for the BMX race market, featured against a crisp white background.
A Promax 4-bolt 104 BCD chainring on a white background targeting the BMX race market.
A Promax 4-bolt 104 BCD chainring on a white background, ideal for BMX race market.

Highlights

  • 104mm BCD, four bolt
  • 41, 42, 44 and 45 tooth
  • 6061-T6 aluminium, CNC machined
  • Built for race torque

Description

Promax have dropped a chainring that is possibly the most reasonably priced CNC machined chainring on the BMX race market. Manufactured from high-end aluminium, the Promax 4-bolt 104 BCD chainrings are designed to handle the torque and stress of modern BMX racing and are fully capable in other single speed applications.

These are a great upgrade for the club racer looking to change up the standard gearing on their race bike without breaking the bank, and without compromising quality. 

Features

Features
  • 104mm BCD, four bolt. Designed to be used with most cranksets and spiders that take a 4-bolt 104 BCD chainring.
  • 41, 42, 44 and 45 tooth. Four tooth counts, so you can change up the standard gearing on a club race bike.
  • 6061-T6 aluminium, CNC machined. High grade 6061-T6 gives high strength while providing weight savings, and it is machined rather than stamped.
  • Built for race torque. Made to handle the torque and stress of modern BMX racing, from the gate onwards.
  • Single speed 3/32 inch. It runs a single speed 3/32 inch drivetrain, so it is fully capable in other single speed applications too.

Specifications
  • Fits: Most cranksets and spiders that use a 4-bolt 104 BCD chainring
  • Bolt pattern: 4 bolt, 104mm BCD
  • Teeth: 41, 42, 44 and 45
  • Chain size: Single speed 3/32"
  • Material: 6061-T6 aluminium, CNC machined
  • Note: Single ring position.

Gearing calculator
Display

See what this gives you in gear inches, rollout and ratio.

This sprocket

Reading its tooth count.

Your gearing

Gear inches —″
Rollout —m
Ratio —:1

Set both tooth counts to see your gearing.

Open the full gearing calculator for the gear chart, custom tyres and every combination near a target.

Promax 4-bolt 104 BCD Chainring

Brand: Promax SKU:

$57.00 USD

Or 4 payments of $14.25 USD with

Colour - Black

Teeth - 41T

Promax 4-bolt 104 BCD Chainring - Black / 41T

$57.00 USD

Price match request

$12.99 flat-rate shipping Australia-wide

Express from $21.99

Free in-store pickup - Brisbane

Availability

41T42T44T45T
Black

● In stock at LUXBMX ● With supplier ● Preorder ○ Sold out

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