NYXOVA Exhaust Pipe Expander Kit — 1-5/8" to 4-1/4" | Muffler Pipe Spreader Tool Set with Case

Overview: widen with precision, seal with confidence

The NYXOVA Exhaust Pipe Expander Kit is designed for controlled, accurate pipe widening of mild steel exhaust tubes. By expanding the tailpipe to a slightly larger diameter, you may achieve a better fit with narrower tubing and potentially smoother exhaust flow. While outcomes can vary by application, this kit is built to help you tailor pipe diameter to your muffler system and sealing needs.

Whether you’re addressing a tight seal, adjusting for a replacement muffler, or seeking a freer exhaust path, this tool set provides a methodical approach to pipe expansion. The process centers on careful material handling, repeatable sizing, and a tidy workspace that supports efficient workflow on cars, trucks, or motorcycles.

Premium build for lasting performance

Durability is front and center with aerospace-grade 6061 aluminum collets paired with a tempered 40CR alloy steel expander. The combination delivers resistance to rust and deformation, helping the kit endure regular workshop use and challenging environments without sacrificing precision.

Versatile sizing for common exhaust needs

The kit covers a broad expansion range from 1-5/8 inches to 4-1/4 inches, with a set of seven collets that match different diameter windows. This versatility makes it suitable for a variety of tailpipe configurations and is designed to adapt as you encounter multiple projects.

• Steel expander with progressive collets for multiple diameter ranges
• Includes seven collets: 1-5/8"–2", 2"–2-1/2", 2-3/8"–2-3/4", 2-3/4"–3-1/8", 3-1/8"–3-1/2", 3-1/2"–3-7/8", 3-7/8"–4-1/4"
• All components stored in a dedicated case for quick setup

Easy, repeatable operation

Use the kit by selecting the appropriate collet, applying a light lubrication, and securing the pipe before starting the expansion. In colder conditions, pre-warming the pipe helps minimize surface stress. For lighter effort, consider using a 1/2" or 3/4" impact wrench with the proper sleeves.

Organized and portable

Everything nests neatly in the included storage box, helping you keep tools organized between jobs and making transport to the shop or field tasks straightforward.