Shimano Führungs- und Spannrolle RD-M8100/RD-M8120 – Precision Derailleur Pair for Modern MTB Systems
The Shimano Führungs- und Spannrolle RD-M8100/RD-M8120 is a matched pair of front and rear derailleur pulleys designed for 12-speed mountain bike drivetrains. These precision-engineered components ensure smooth, reliable gear shifting across the full cassette range.
Paired front and rear pulleys deliver consistent, crisp shifting under load on technical terrain
Optimised for Shimano RD-M8100 and RD-M8120 derailleurs, ensuring exact compatibility and factory-spec performance
Lightweight construction at 43 g per pair minimises rotational inertia for faster drivetrain response
Durable build quality supports long-term reliability in demanding off-road conditions
Das zeichnet die Shimano Führungs- und Spannrolle aus
The matched pair design means both pulleys are calibrated to work together as a single unit, eliminating the need to source and match individual components. The precision tolerances reduce friction and chain wear compared to worn or mismatched replacements.
Ideal für...
Mountain bikers running Shimano Deore XT M8100 or SLX M8120 12-speed drivetrains who need a complete pulley pair for a derailleur service or upgrade. Also suited for riders who prioritise drivetrain efficiency and want to maintain factory-level shifting performance.
Anwendung von Shimano Führungs- und Spannrolle
Remove the worn pulleys from the derailleur cage
Install the new front and rear pulleys as a matched pair
Check shifting accuracy across all gears after installation
Shimano is a Japanese manufacturer specialising in cycling components, founded in 1921. The brand supplies drivetrain, braking, and shifting systems for road, mountain, and gravel bicycles across all performance tiers. Shimano components are widely specified by OEM manufacturers and aftermarket riders alike.
It is a matched pair of front and rear derailleur pulleys designed for Shimano 12-speed mountain bike drivetrains, specifically the RD-M8100 and RD-M8120 models.
The pair is compatible with Shimano RD-M8100 (Deore XT) and RD-M8120 (SLX) derailleurs. It is not cross-compatible with other Shimano or third-party derailleur models.
The pair weighs 43 g in total. The pulleys are constructed from a lightweight polymer and metal composite, optimised for durability and reduced rotational mass.
The delivery includes one matched pair consisting of one front pulley and one rear pulley, ready for installation in the compatible derailleur.
Shimano provides a 24-month manufacturer warranty on this component. The warranty covers manufacturing defects under normal use.
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