BOX Two Cosine Chainring / 40T Black
BOX Two Cosine Chainring / 41T Black
BOX Two Cosine Chainring / 42T Black
BOX Two Cosine Chainring / 43T Black
BOX Two Cosine Chainring / 44T Black
BOX Two Cosine Chainring / 45T Black

Highlights

  • Built for race leg speed
  • 4 x 104mm bolt pattern
  • Rounded 3/32 inch teeth
  • 6061 aluminium, made in the USA

Description

When you're hitting the sort of leg speeds modern day BMX tracks demand, you want the reassurance that your chainring will run true lap after lap. The Box Components Cosine 4-Bolt Chainring is made in the USA from durable 6061 aluminium with large square shaped cutouts around the perimeter to help save weight, 3/32" teeth with rounded tooth profile to reduce chain wear, laser-etched BOX logos and a 4x104mm bolt pattern.

Features
  • Built for race leg speed. Made to run true lap after lap at the speeds modern BMX tracks ask for.
  • 4 x 104mm bolt pattern. Bolts to any four bolt 104mm PCD spider, so it drops onto a standard race crank setup.
  • Rounded 3/32 inch teeth. The rounded tooth profile is there to reduce chain wear as the chain rolls on and off.
  • 6061 aluminium, made in the USA. Machined from durable 6061 aluminium in the USA.
  • Square cutouts save weight. Large square shaped cutouts around the perimeter take mass out without changing the bolt pattern.

Specifications
  • Bolt pattern: 4 x 104mm
  • Chain size: 3/32"
  • Material: 6061 aluminium
  • Note: Made in the USA. Laser etched BOX logos.

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.

Box Two Cosine Chainring

Brand: BOX Components SKU:

$64.00 USD

Or 4 payments of $16.00 USD with

Colour - Black

Teeth - 43T

Box Two Cosine Chainring - Black / 43T

$64.00 USD

Price match request

$12.99 flat-rate shipping Australia-wide

Express from $21.99

Free in-store pickup - Brisbane

Availability

Black
38T
39T
40T
41T
42T
43T
44T
45T

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

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  • 100% Australian owned
  • Australia's largest BMX range
  • Hassle-free returns
  • Fast trackable shipping

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