Black Friday city bike transmission: discounts

What does the transmission operation include?

Six pages feature the parts. The chains in Black Friday range from single-speed chains to electric bike chains; the cassettes in Black Friday cover transmissions from 8 to 12 speeds and offer single sprockets for hub gears; the sprockets in Black Friday include many models for electric bike motors. Additionally, there are cranks, rear derailleurs and cables and housings, often sufficient for achieving precise shifting. The guide for each category can be found in the urban transmission.

Derailleur, internal hub gear or single-speed?

A city bike with a derailleur has a cassette at the rear and one or more sprockets: the chain, cassette, and derailleur must match the same number of speeds. A bike with an internal hub, like the Nexus hubs, hides its gears in the rear wheel: the chain runs on a single sprocket and a single cog, and wear is limited to these three parts. A single-speed bike operates the same way, with no gears at all. Count the cogs or check the indication on the shifter before ordering.

Electric bike: specific parts

The central motor determines its sprocket. A Direct Mount sprocket attaches directly to the motor's axle and is compatible only with a specific model, Bosch, Shimano, Yamaha or TQ, within a given chain line, often 52 or 55 mm. Electric bike chains, reinforced to handle the motor's torque, wear out faster than regular bike chains: expect to check them more frequently.

Discounts on transmission: compare the same part

For a chain, check the number of speeds, the number of links, and the included attachment; some are sold in packs of twenty-five for workshops. For a sprocket, compare the number of teeth, the attachment, and the chain line; for a cassette, the gradation from the smallest to the largest cog. The crossed-out price only makes sense between two identical parts: a Direct Mount sprocket for Bosch on sale can be compared to a sprocket of the same motor, with the same number of teeth and chain line.

What transmission brands are featured during the operation?

Shimano unites under the name Cues its components of 9, 10 and 11 speeds, which share the LinkGlide standard and can be combined, but not with older Hyperglide transmissions; the Cues FC-U4010 and FC-U6000 cranks are featured here.

XLC offers the CR-E40 sprocket for Bosch motors, available in 9 to 11 speeds or 12 speeds, with 34 to 38 teeth and chain lines of 52 or 55 mm.

E*Thirteen offers its Helix sprockets in E*Spec version for various motors: Bosch Gen4, Shimano EP8, TQ HPR50 or Fazua Ride 60.

Stronglight, a manufacturer from Saint-Étienne producing its sprockets in France, offers Direct Mount sprockets for Bosch motors in 7075 aluminium, with alternating teeth.

KMC, a Taiwanese chain specialist, offers electric bike models with EPT anti-corrosion treatment, such as the E9 or E12, and the Z1 for single-speed or integrated hub transmissions.

For maintenance of the rest of the bike, see the wheels and components of the operation; the entire urban offer is in the Black Friday urban, and the sports transmissions in the road transmission and MTB transmission during Black Friday. For the rest of the year, check the clearance and new arrivals.

Frequently asked questions

Does the Black Friday operation include transmission parts?

Yes, the parts gathered on these pages are included. The operation starts on the Friday after Thanksgiving, and Vélo-Store runs its transmission discounts throughout November.

When should you change your chain?

When the wear indicator, a small tool slipped between two links, shows that it has stretched. Replaced in time, it saves the cassette and sprockets; too late, it jumps on worn cogs.

New chain, new cassette: is it necessary?

Not necessarily. When the replaced chain slips or clunks on the most used cogs, it means the cassette has experienced the same wear and needs to be replaced. On an internal hub, it's the rear cog that needs checking.

Can you mix parts from different brands?

Often, for the same number of speeds: a KMC chain can fit on a Shimano cassette with the same speed. Exceptions are brand-specific standards, like LinkGlide at Shimano, which should be checked before purchase.

How can I find out the number of speeds on my bike?

On a bike with a derailleur, the number of cogs at the rear indicates the number of speeds. For an internal hub, the shifter displays the number of gears, often 3, 7, or 8 on a city bike.