Derailleur Cable Housing Clarks SP4 with Teflon 4 mm x 2000 mm with 4 End Caps Y2029, black

Clarks SP4 derailleur cable housing with Teflon lining is a 4 mm internal diameter, 2000 mm length housing intended for bicycle gear and derailleur systems. Supplied with four Y2029 end caps in black, this housing is designed to reduce friction between inner cable and housing, supporting smoother and more precise gear shifting on road, city and mountain bikes. The construction focuses on low resistance, compatibility with standard 4 mm shift cables, and straightforward installation during replacement or repair.

Advantages

The Teflon-lined inner surface minimises friction and helps maintain consistent cable movement over time, which improves shifting response and reduces wear on the inner cable. The 4 mm internal diameter is compatible with standard derailleur cables, while the 2000 mm length covers many routing needs without additional joins. Supplied end caps protect the housing ends, provide a cleaner finish and help prevent fraying of the inner cable.

Suitable for

• Replacement of worn derailleur outer housing on road, hybrid and mountain bikes
• Repair tasks where a continuous 2000 mm length is needed for full frame routing
• Upgrading older housings to a low-friction Teflon-lined option to improve shift quality
• Home mechanics and professional bike workshops performing shifting system maintenance

When it may not be suitable

This housing is intended specifically for derailleur/shift cables with a 4 mm inner diameter requirement and may not be suitable for brake systems that typically require different housing stiffness and construction. For frames or routing paths that need shorter or pre-shaped housing segments, a full 2000 mm length may require cutting and re-capping to fit properly.

Key specifications

• Inner diameter: 4 mm
• Length: 2000 mm
• Inner lining: Teflon (low-friction)
• Colour: black
• Includes: four end caps (Y2029 style)

How to use

Measure the required housing length along the cable routing on your bicycle, then cut the 2000 mm housing to the correct length using appropriate cable housing cutters to ensure a clean, square cut. Insert the inner cable through the Teflon-lined housing, fit an end cap at each cut end to secure and protect the housing, and route the housing through the frame guides and stops. After installation, adjust the derailleur tension and indexing according to the manufacturer's procedure and lubricate the inner cable if needed for additional smoothness.

What to consider before purchase

• Ensure your bike's shifting system uses 4 mm outer housing for compatibility
• Confirm that a 2000 mm continuous length suits your frame routing or plan to cut and re-cap as needed
• Check whether brake housings are required separately, as this product is for derailleur/shift use

Usage recommendations

For best results, cut the housing with a dedicated cutter and install the supplied end caps to preserve the Teflon lining and maintain smooth cable operation; periodically inspect and replace the housing if you notice increased friction or degraded shift performance.