BMX Sprocket Black Friday: race deals and sprockets

On this page, the BMX sprockets of the Black Friday bring together two distinct parts: the rear hub sprockets, ranging from 13 to 18 teeth, and the crankset chainrings, from 34 to 49 teeth, with single-speed chains and freewheels. To enjoy a discount without mistakes, count the teeth of the part to be replaced and note the chain width of your bike before comparing two offers.

Rear sprocket or chainring: what you're really looking for

The number of teeth is enough to sort the offer. From 13 to 18 teeth, like the Excess sprockets, the 16-tooth aluminium sprocket from Elevn or the 14-tooth chromoly sprocket from Global Racing, the part is mounted at the rear on a cassette hub. From 34 to 49 teeth, like the Box Two, the Elevn Flow or the Insight, it is a chainring, screwed onto the crank spider. A single-speed freewheel combines the sprocket and mechanism and screws onto a threaded hub, like the SF-MX30 from Shimano. The number of teeth is often engraved on the part; if not, count them starting from a tooth marked with a marker.

Choosing your chain: width, length and link

Width: Narrow for a 3/32 inch drivetrain, Wide for a 1/8 inch drivetrain. This is mentioned in the name of most chains on the page, especially from KMC.
Weight: hollow axles lighten the chain. The K1SL from KMC combines them with lightweight plates, and the Pro from Crupi is available in Hollow or Solid versions.
Length adjustment: a half-link chain, like the HL1 from KMC or the Half-Link from Mission,shortens one link at a time, placing the rear wheel precisely in the drops.
Link: depending on the model, the chain closes with a quick link, sometimes for single-use only, or with a joining pin to be pressed with a chain tool.

Comparing two discounts on the same part

The same chainring comes in over ten sizes and several colors here: the Flow from Elevn ranges from 38 to 49 teeth, the Joyride from Forward is available with 4 or 5 mounting points. A crossed-out price can therefore only be compared with the number of teeth, with identical mountings and chain width, the product sheet being the reference. In terms of material, aluminium lightens the drivetrain, while chromoly steel for rear sprockets resists wear better. Finally, if the chain in place has seen a lot of use, plan to replace it with the sprocket or chainring: an elongated chain wears new teeth prematurely.

BMX chain and sprocket brands from the operation

KMC covers all needs for single-speed chains: the K1 and the Z1, in Narrow or Wide, the HL1 half-link and the K1SL, lightened by its hollow axles.

Elevn pairs its Flow racing chainrings with a 16-tooth aluminium rear sprocket.

Box manufactures the Box Two chainring in 6061-T6 aluminium, for a 4-bolt crank at 104 mm and a 3/32 inch chain, from 39 to 43 teeth on this page.

Crupi, a BMX race brand, offers its Pro chain in two versions, Hollow and Solid, developed with the chain manufacturer YBN.

About the drivetrain

All year round, the page for BMX chains, sprockets and freewheels details freewheels, cassette hubs, and engagement points. The section BMX drivetrain of the Black Friday explains how to calculate gear ratios and read chainring mountings. After the operation, the removed colors go to the sale section, while the newly arrived references are displayed in the new arrivals.

Frequently asked questions

How to gift a BMX drivetrain part without getting it wrong?

You need to know the number of teeth of the part to be replaced, its mounting and the chain width. If you only have the width, a Narrow or Wide chain remains the simplest gift, as it can be shortened to the desired length.

Why are chainrings called sprockets on this page?

The catalogue designates all toothed parts of the drivetrain as sprockets here. Trust the number of teeth: beyond thirty, it’s a chainring.

Half-link chain or standard: which one to choose?

The half-link chain is useful when the rear wheel sits wrongly in the drops with a standard chain, for example, after a chainring replacement. Otherwise, a standard chain, lighter for the same size, is sufficient.

What is the date of Black Friday?

It varies from year to year: Black Friday is the day after Thanksgiving, an American holiday set on a Thursday. At Vélo-Store, the discounts from the operation extend beyond this date and throughout November, including BMX chains and sprockets.