Derailleur Hanger Black Friday: deals

A derailleur pulley on Black Friday can be ordered with the reference of your rear derailleur in hand, engraved on the cage or body: it’s this, rather than the bike brand, that determines the diameter, number of teeth, and axle. The promotions in the operation cover genuine Shimano and Sram pulleys, universal pulleys, and models on ceramic bearings.

Finding the pulley for your derailleur

Take note of the complete reference for the derailleur, such as RD-R8150 for an Ultegra Di2 or Force AXS from Sram, then its number of speeds. Next, check three points on the pulley sheet: the number of teeth, from 11 to 14 for most derailleurs, the position, top guiding pulley or bottom tension pulley, and the type of drivetrain, single or double chainring. Single chainring pulleys often have alternating thick and thin teeth, which hold the chain better. The role of pulleys and signs of wear are detailed on the permanent page for bike derailleur pulleys.

Pulleys on sale: compare like for like

A crossed-out price for a box of ten pulleys and another for a pair doesn’t tell you much: calculate the discount per pulley, then compare these points from the product sheet.

Quantity: single pulley, pair, or box of ten pulleys meant for workshops.
Contents: single pulleys, or kit with the internal cage, common with Sram.
Bearing: smooth ring, steel ball bearing or hybrid ceramic bearing, which are intended for different uses.
Declared compatibility: a universal pulley supplied with spacers fits several derailleurs, while a genuine pulley fits only one model.
System: oversized replacement pulleys, like the OS from CeramicSpeed, only work with the cages for this system.

Road, gravel or MTB: where to look

This page covers all practices; for an MTB, the MTB derailleur pulleys in Black Friday isolate mountain references. A worn pulley often accompanies a tired chain: the bike chains from the operation should match the number of speeds. If the cage is bent or the derailleur worn, the rear derailleurs in Black Friday take over. Clearance items go to the clearance, the last arrivals to the new arrivals.

Pulley brands during Black Friday

Nova Ride offers ceramic Evo S pulleys for Shimano 11 and 12-speed derailleurs, in road, GRX and MTB versions, and a Campagnolo 12-speed version.

Shimano designates its genuine pulleys by the derailleur reference: RD-R9100 and RD-R9250 in Dura-Ace, RD-R8150 and RD-6800 in Ultegra, RD-5800 in 105, RX810 in GRX, up to the XT and SLX in MTB.

Sram provides pulleys for its Red eTap and Force AXS road derailleurs, Force XPLR gravel and Eagle MTB, often with the internal cage, and X-Sync pulleys for single chainring setups.

Elvedes stands out with universal pulleys on annular bearings, supplied with spacers for derailleurs from 7 to 11 speeds, and boxes of ten pulleys for the workshop.

Enduro Bearings offers its Jockey XD-15 and ZERØ pulleys for Shimano, Sram and Campagnolo, including a set dedicated to the GRX 11 speed.

CeramicSpeed offers its RS Alpha pulleys for the Shimano Dura-Ace and Ultegra 12-speed derailleurs and Sram Force and Rival E1, as well as replacement OS pulleys, with 15 and 19 or 17 and 17 teeth, for its oversized cages.

Frequently Asked Questions

When does the Black Friday for pulleys start?

The day after Thanksgiving, a Friday, a few weeks before the holidays. The discounted derailleur pulleys at Vélo-Store don’t stop on this day: Black Friday discounts run throughout November.

Why change the derailleur pulleys?

Sharp or rounded teeth, lateral play, or a snagging bearing make shifting inaccurate and the drivetrain noisy. New pulleys restore precision to a still-healthy derailleur.

Are road pulleys and gravel pulleys the same?

Not always: a gravel derailleur like GRX or XPLR has its own pulleys, sometimes different from those of the nearby road group. Rely on the derailleur reference rather than the type of riding.

Do you need to open the chain to change a pulley?

Rarely: by removing one pulley at a time, the chain stays in place on the cage. An Allen key is usually enough; follow the mounting direction indicated on some pulleys.