VeloLayers Spring-Loaded Pulley Cage for WheelTop EDS TX
Keep the chain under control when your trifold bike folds.
This spring-loaded pulley cage is designed for the WheelTop EDS TX electronic rear derailleur. It manages the extra chain length created during the folding sequence of a trifold bicycle, while retaining the original cage geometry during normal riding.
How it works
In the riding position, the spring mechanism remains compressed and the two pulley wheels follow the original WheelTop EDS TX cage layout. When the bicycle is folded, the mechanism deploys and increases the distance between the pulley wheels. This provides additional chain take-up to help reduce loose chain during the fold.
Key features
- Two-position design: compact riding position and extended folding position.
- Original-style riding geometry: the compressed cage follows the stock WheelTop EDS TX pulley layout.
- Fold-activated chain take-up: extra pulley spacing is available only when the bike is folded.
- Better chain management: helps reduce excess chain slack and unwanted chain contact during folding.
- Purpose-designed for trifold bikes: created for drivetrains that gain effective chain length as the rear section folds.
Compatibility
Designed for the WheelTop EDS TX rear derailleur. Bicycle frames, folding paths, derailleur versions, chainring sizes, cassettes, and chain lengths vary. Confirm clearances and compatibility with your exact setup before installation. This is not a universal derailleur cage.
Installation and safety
Correct chain length, spring preload, travel limits, and fold-trigger setup are essential. Professional installation by an experienced bicycle mechanic is recommended. Before riding, manually test every gear and the complete folding and unfolding sequence. Do not ride if the cage, chain, derailleur, wheel, frame, or folding mechanism interferes at any point.
VeloLayers is an independent accessory maker and is not affiliated with or endorsed by WheelTop. WheelTop and EDS TX are trademarks of their respective owner.