Ideal for riders restoring or maintaining an older 7- to 10-speed bike who want an affordable pulley replacement with broad cross-brand compatibility.
The BBB Cycling RollerBoys 10T is a smart replacement pulley set for older rear derailleurs that still have plenty of life left in them. If your current jockey wheels are hooked, noisy or sloppy, swapping them out can sharpen the feel of the whole drivetrain without the cost of replacing the derailleur. This set uses a 10-tooth pulley design, industrial bearings, and a special tooth pattern aimed at quick, consistent shifting.
For day-to-day bikes, older road builds and plenty of 7- to 10-speed setups, these are a practical upgrade over tired stock pulleys. The body uses EMS composite with a 40% glass-fibre mixture, which is there to balance low weight with good durability, and the box includes bushings/spacers for different shifting systems to make fitment easier across compatible derailleurs.
The key thing to check is compatibility. These are suited to Shimano 7/8-speed, Campagnolo 8/9/10-speed, and older SRAM 9.0, 9.0 SL, 7.0 and 5.0 models from the late 1990s. They can be a great fix for older bikes that are hard to match with current OEM pulleys, but they are not the right pick if your derailleur is built around newer 11- or 12-speed pulley standards.
10-tooth pulley format
Designed for rear derailleurs that use 10T pulleys, making it a useful option for many older drivetrains that do not take newer 11T replacements.
Wide 7- to 10-speed coverage
Covers Shimano, Campagnolo and selected older SRAM systems, so it suits a broad range of older road, MTB and commuter bikes.
Industrial bearings
Uses industrial cartridge-style bearings to keep the pulleys running smoothly for everyday riding and routine drivetrain refreshes.
Special tooth pattern
The pulley tooth shape is intended to support quick, clean shifting, especially when replacing badly worn original wheels.
Composite body with glass-fibre mix
Built from EMS composite with 40% glass fibre for a balance of stiffness, durability and low weight.
Bushings included
Comes with a complete set of bushings/spacers for different shifting systems, which helps when matching older derailleur hardware.
Low overall weight
At 22 g for the set, it keeps things light while still being a practical wear-part replacement.
General
Materials & construction
Compatibility
Dimensions & weight
Features
What's included
Great for
Maybe not for
Check that your derailleur uses 10T pulleys before ordering. Compatibility listed for Shimano 7/8-speed, Campagnolo 8/9/10-speed, and older SRAM 9.0, 9.0 SL, 7.0 and 5.0 models from the late 1990s. These are supplied with bushings/spacers for different systems. Some users have found replacement pulleys slightly thicker than what they removed, so a quick derailleur alignment check after install is worthwhile.
vs BBB RollerBoys BDP-02 11T
A close sibling in the same range, but built around an 11-tooth format for different derailleur compatibility.
vs Shimano Pulley Set 8-/9-/10-speed
A genuine Shimano replacement set with 11T pulleys for a long list of Shimano road and MTB derailleurs.
vs Campagnolo Centaur 10-speed Derailleur Pulleys
A model-specific Campagnolo replacement for Centaur 10-speed rear derailleurs.
Check tooth count first
Pulley tooth count matters more than many riders expect. If your derailleur was designed around 10T pulleys, moving to an 11T alternative is not always a straight swap.
Best suited to older bikes
This is the sort of part that makes sense on an older road, MTB or commuter build where the derailleur still works well but the pulley wheels are clearly worn.
Included bushings help, but fit still matters
The included bushings/spacers broaden compatibility, but older derailleurs can vary. Before final tightening, make sure the pulley spins freely and the hardware matches your original setup.
Do a derailleur check after installation
If the replacement pulleys are a little different in thickness from the originals, it is worth checking upper pulley alignment and overall indexing once fitted.
Part of your ride
BBB Cycling is a Dutch cycling brand established in 1998 by former cyclists Chris Koppert and Frank Moons. The company develops a broad range of cycling parts, accessories, apparel and workshop products, with more than 1,500 products across dozens of categories.
The brand is based in Leiden, the Netherlands and positions its product development around rider feedback, in-house experience and prototype testing. Over the years, BBB Cycling says its products have received more than 100 product and innovation awards, and the brand sells across road, mountain bike, gravel, urban and workshop categories.
