Bicycle Rear Derailleur Hollow Eccentric Pulley Wheel 18T Ceramic Bearing Upgrade Kit for R8000 R7000 DIY Road Bike Crankset
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£29.99£49.98
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Specifications
- Brand Name
- NONE
- Origin
- Mainland China, Mainland China
- High-concerned chemical
- None, None
- Type
- Pulley Wheel, Pulley Wheel
- Components
- Derailleurs, Derailleurs
Product Description
18T eccentric hollow guide wheel
·Number of teeth: 18T
·Material: Aluminum alloy, ceramic
·Weight ≈ 35g
· Compatibility:
L-TWO0(ERX/ER9/R9/R7)
Magene QEDSARM(11/12 Speed requires replacement with 16MM fixing screw)
Universal for 9, 10, 11 Speeds Shimano (11-speed long crank not applicable)
(Some rear derailleurs with specific cages are incompatible. Please confirm your
derailleur model before purchasing.)
Feature：
Surface anodizing treatment,
(Strong impact resistance, rust and oxidation prevention)
Full ceramic bearing design.
(Self lubricating and maintenance free, with less noise)
Deep tooth design of guide wheel（Improve the bite of the chain to make speed and rotation more efficient）
·Number of teeth: 18T
·Material: Aluminum alloy, ceramic
·Weight ≈ 35g
· Compatibility:
L-TWO0(ERX/ER9/R9/R7)
Magene QEDSARM(11/12 Speed requires replacement with 16MM fixing screw)
Universal for 9, 10, 11 Speeds Shimano (11-speed long crank not applicable)
(Some rear derailleurs with specific cages are incompatible. Please confirm your
derailleur model before purchasing.)
Feature：
Surface anodizing treatment,
(Strong impact resistance, rust and oxidation prevention)
Full ceramic bearing design.
(Self lubricating and maintenance free, with less noise)
Deep tooth design of guide wheel（Improve the bite of the chain to make speed and rotation more efficient）
Pros & Cons
Pros
- Ceramic bearings and 18T hollow design reduce friction for efficient shifting.
- Ultralight at 35g, ideal for road bike performance upgrades.
- Broad compatibility with Shimano 9-11 speeds and others like L-TWO0.
- Eccentric pulley enhances chain retention on rough terrain.
Cons
- Requires 16mm fixing screw replacement for some 11/12 speed systems.
- No brand specified, potential quality variance.
- Specific to rear derailleurs, not front.
- Installation may need tools for DIY road bike crankset.
Common Questions
What material is the bicycle rear derailleur pulley wheel made of?
Aluminum alloy with ceramic bearings for smooth performance.
What is the tooth count and weight of this pulley wheel?
18T eccentric hollow design, weighs approximately 35g.
Which bike systems is this derailleur pulley compatible with?
Compatible with Shimano 9/10/11 speeds, L-TWO0, Magene QED, SARM 11/12 speed (with 16mm screw).
Is this an upgrade kit for R8000 or R7000 cranksets?
Yes, ideal upgrade for Shimano R8000/R7000 road bike derailleurs.
How long does shipping take from Mainland China?
Typically 7-18 days via standard international shipping.
Product information last updated on March 30, 2026