Bigger than standard Presta valve nuts, the Big P-Nut is designed to provide extra leverage to better tighten tubeless valves on standard tubeless rims.

WARNING: Cycling can be dangerous. Bicycle products should be installed and serviced by a professional mechanic. Never modify your bicycle or accessories. Read and follow all product instructions and warnings including information on the manufacturer’s website. Inspect your bicycle before every ride. Always wear a helmet.


Problem Solvers Big P-Nut is designed for compatibility with all tubelesscompatible valve systems. If you are using the Big P-Nut with a carbon rim, see rim manufacturer’s instructions for tubeless compatibility.


The Problem Solvers Big P-Nut is designed to be hand-tightened onto any tubeless-compatible valve and does not require any tools for installation.


1. Install tubeless-compatible rim tape according to the manufacturer’s instructions.

2. Insert the tubeless valve through the valve hole.

3. Finger tighten the Big P-Nut until the valve seals against the inside of the rim.

NOTE: The larger diameter and knurling of the Big P-Nut will allow you to put extra torque on the valve. Achieving a seal between the rim and the valve does not require much effort. Be careful not to over-tighten the Big P-Nut onto your valve.


Inspect your Big P-Nut for signs of excessive wear, cracks, or other fatigue before every ride. If you suspect your Big P-Nut has been damaged, return it to the shop where it was purchased to be inspected by a professional bicycle mechanic.