LTWOO 105 rear derailleur jockey wheel replacement kit compatible with Shimano R7000 groupset, featuring large 13T upper and 18T lower pulleys designed for road bikes, available in multiple colour and finish options to match specific groupset editions.
LTWOO 105 Rear Derailleur Jockey Wheel Set: Direct Replacement for Shimano R7000 Groupsets

When the jockey wheels on your road bike's rear derailleur wear down, shifting performance deteriorates, leading to skipped gears and noisy operation. This LTWOO 105 replacement pulley set provides a direct solution, engineered specifically for compatibility with the Shimano R7000 groupset. It includes both the necessary upper and lower pulleys in a large-tooth configuration (13T and 18T), designed to restore precise and quiet gear changes. Available in several colour and finish variants, it allows for functional maintenance or aesthetic matching to different editions of the 105, 5800, 6800, and UT groupsets. The product is a straightforward, single-item kit focused on delivering the correct mechanical parts for this specific derailleur model.
Features and Construction

This jockey wheel kit is defined by its precise compatibility and the tangible specifications provided for the pulley components. The construction is centred on providing a direct mechanical replacement for a specific derailleur system.
Material and Build
The source text does not specify the materials used in the construction of the jockey wheels themselves, such as whether they are nylon, aluminium, or incorporate sealed bearings. The build focus is on the functional specifications: a 13-tooth upper pulley and an 18-tooth lower pulley. The product is offered in distinct versions labelled 'colourful' and 'economic', which likely refer to different finishes or material grades intended to visually and functionally match corresponding groupset editions from Shimano (105, 5800, 6800, UT). This allows users to select a set that aligns with their existing components.
Size and Practical Fit
The key sizing information is the tooth count: 13T for the upper wheel and 18T for the lower wheel. This 'large pulley' configuration is a defined specification. The overall physical dimensions are described only as a 'special size', indicating these wheels are not a universal standard but are engineered to fit precisely within the cage of the LTWOO 105 derailleur and its compatible Shimano R7000 counterpart. This specific sizing ensures correct chain alignment, tension, and clearance, which are critical for reliable shifting. Buyers must verify their derailleur model matches the stated compatibility to ensure a proper fit.
Uses and Placement

This product serves a clear, single purpose within the ecosystem of bicycle maintenance and component replacement.
Event or Professional Use
For professional mechanics or enthusiasts performing workshop-level maintenance, this kit is a consumable spare part. It allows for the quick refurbishment of a customer's or team bike's LTWOO 105 or Shimano R7000 rear derailleur. The availability of different colour/finish editions ('colourful' vs. 'economic') provides a small degree of customisation, potentially allowing mechanics to match a specific bike's aesthetic or component grade during a service. Its primary professional value lies in its validated compatibility, reducing the risk of installing an incorrect part that could affect shifting performance.
Everyday Home Use
For the home mechanic, this set addresses a common wear-and-tear issue. Over time, jockey wheels develop wear on their teeth and bearings, leading to poor shifting. This product enables a cyclist to perform a relatively straightforward derailleur service at home, extending the life of their existing derailleur body. The clear compatibility statement with the popular Shimano R7000 groupset gives the DIY user confidence in purchasing the correct part. The single guide wheel included is the only component needed to complete the replacement of both pulleys on the derailleur cage.
Benefits and Buying Value

The value of this product is rooted in its specificity and the practical problem it solves for a defined user group.
Reuse and Low Maintenance
The core benefit is enabling the reuse of an otherwise functional rear derailleur. Instead of replacing the entire derailleur unit due to worn pulleys—a more expensive option—this kit facilitates a cost-effective component-level repair. Once installed, the new jockey wheels restore shifting performance, potentially requiring no further maintenance beyond routine cleaning and lubrication, consistent with standard bicycle care. This approach supports a more sustainable practice of repairing rather than replacing larger assemblies.
Why Choose This Product
Choose this product if you have identified worn jockey wheels on an LTWOO 105 or Shimano R7000 rear derailleur and seek a direct, compatible replacement. Its value is its guaranteed fit and inclusion of both required pulley sizes (13T and 18T) in one kit. The option to select a 'colourful' or 'economic' finish adds a minor but relevant layer of choice for those wishing to match their bike's component theme. It is a practical, no-frills solution focused purely on mechanical restoration, backed by clear compatibility information.





