Best Sellers

Our best-selling tools are trusted by CIPP installers, drain cleaners, and trenchless repair professionals worldwide. The 4Reline Best Sellers Collection brings together the most proven and reliable equipment for pipe rehabilitation, inversion, and drain maintenance, all designed to keep your jobs running smoothly and downtime to a minimum.

Here you’ll find Alternative K9 Flexible Shafts for RIDGID K9 102 and RIDGID K9 204 machines, built from spring-grade steel for optimal torque, flexibility, and durability. These shafts are pre-crimped and ready to use, saving time in the field and reducing maintenance hassle. Our shaft connectors and other accessories let you repair or customize your setup in minutes without needing to replace the entire shaft, ideal for busy professionals who value efficiency.

Also featured are Silicone Bladders for CIPP installations, made from non-stick, heat-resistant material for easy removal and multiple reuse cycles. Whether you’re working on mainline or lateral pipe repairs, these bladders deliver a tight, consistent finish with minimal effort.

Other top picks include Inversion Drum Pressure Regulators, Flex Shaft Adapters, and custom-length accessories built to handle the toughest real-world conditions. Every product in this collection has been field-tested and refined for reliability, performance, and compatibility across a wide range of trenchless systems.

If you’re looking for dependable gear for drain cleaning, pipe relining, or CIPP rehabilitation, these best sellers are the tools that professionals trust most.