Bicycle Rear Derailleur Hollow Eccentric Pulley Wheel 18T Ceramic Bearing Upgrade Kit for R8000 R7000 DIY Road Bike Crankset
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$43.71$72.85
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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
- Lightweight 35g upgrade
- Ceramic bearings for smooth performance
- Wide compatibility 9-12 speeds
- Hollow design reduces weight
Cons
- Specific screw needed for some installs
- Aluminum may wear faster than full carbon
- Eccentric design requires precise alignment
- DIY install needed
Common Questions
What materials in the Bicycle Rear Derailleur Pulley Wheel?
Aluminum alloy with ceramic bearings, 18T eccentric hollow design.
What is the weight and size of this derailleur kit?
Approximately 35g, 18T teeth for smooth shifting.
Compatibility with Shimano and other derailleurs?
Fits L-TWOO, Magene, SARM 9-12 speed; Shimano R8000/R7000, requires 16mm screw for some.
How does it upgrade road bike crankset usage?
Ceramic bearings reduce friction for faster, quieter shifts on DIY road bikes.
Shipping from where for this pulley wheel?
Mainland China; components for derailleurs.
Product information last updated on March 30, 2026