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Shimano

Shimano Deore RD-M4120-SGS derailleur, 11-speed, OEM

43.99 €
RRP 49.99 €
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From 27.07.2026 (Monday) Check availability
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Delivery method on Tuesday 28.07.2026
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Delivery method on Tuesday 28.07.2026
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Extended return option up to 100 days More info

The Shimano Deore RD-M4120-SGS rear derailleur is designed for mountain and trekking bikes with a 2×10 or 2×11 drivetrain. The low profile with Shadow RD+ technology helps reduce the risk of hitting rocks and other obstacles and keeps the derailleur closer to the frame. The long SGS cage provides ample range for shifting gears between fast flats and steep climbs, so shifting remains smooth even when riding in more challenging terrain or on scenic roads.

A visible advantage is the sure, legible shifting even when you pedal hard - making it suitable for regular rides, recreational trips and sports rides without the need for top-notch racing equipment. OEM design in non-original packaging is a practical solution for services, building a new bike, and replacing after damage, where it makes sense to prioritize functionality over the box.

  • Designed for mountain and trekking bikes with 2×10 or 2×11 gears
  • Low profile with Shadow RD+ technology reduces the risk of contact with obstacles
  • Long SGS cage for smooth shifting across a wide gear range
  • Support for cassettes that match the dominance of both main climbs and fast straights
  • Mounting suitable for both classic and direct mounting depending on the frame type
  • OEM design delivered in non-original packaging, ideal for service and conversions
Product details
Groupset Shimano Deore
Gears 2x11, 1x11, 3x11
Control type mechanical
Mounting type Direct mount
Technical designation RD-M4120
Capacity 41T
Min./Max. cassette sprocket size 42T/42T
Cage type SGS - long cage
product ID 406228
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Shimano
MTB 10-11-12 speed Shimano
Japanese manufacturer produces road, mountain, gravel, trekking, BMX and e-bike groupsets. They also offer a whole series of components and apparel. Their range goes from wheels, footwear, eyewear to backpacks. Shimano is a traditional manufacturer known for their quality work, which is why they are the favourite choice of amateurs and professionals.
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