Baja No Pinch Tire Tool: Axle Sizes, Kits and Who It Suits

Pinching the inner tube with a tire iron on the last few inches of bead is the classic way to ruin a tire change on a dirt bike. The Baja No Pinch tool was built for that one moment. This page describes it from the maker's own pages, read on October 11, 2026. We have run no trials with it.

Short verdict

A narrow tool that does one step differently: it mounts the tire from the hub outward. It is well documented by its maker, with axle sizes, materials and instructions. Buy it for mounting tube-type tires on 16 to 21 in. wheels, and plan separate tools for bead breaking and removal. The main thing to get right is the axle size.

What the maker states

The two weight figures are both the maker's; we cannot say which applies to which kit. The product pages carry a “Lifetime Tool” badge without written terms, so we do not call it a warranty.

Axle sizes: the one thing to measure

The tool centers itself in the axle bore, so the shaft has to match the bore of your wheel. Front and rear often differ, and the maker's own table of bikes shows pairs such as 20 mm front and 25 mm rear.

The Ultimate kit^* (paid link) is the same tool with more adapters. It costs more within the mid-range price class, so it only makes sense if you need sizes beyond 20 mm. The maker's site has a table of front and rear axle sizes by make, model and year; use it as a first check and measure your own wheel anyway.

How it is used, in the maker's steps

The maker's instructions cover a tube-type tire. In short:

1. Prepare the tube

   Inflate the tube slightly so it is round, dust it with talcum powder, put it in the tire and secure the valve stem in the rim hole with its nut. The maker advises working with a warm tire.

2. Start the first bead by hand

   Beginning at the valve and rim lock, push the bead into the drop center of the rim and over the edge as far as it goes by hand.

3. Finish with the tool

   Insert the shaft fully into the axle opening until the bracket touches the wheel. Work one to two inches at a time and alternate sides.

4. Keep the bead in the drop center

   After every few pushes, press the tire down into the center channel behind the tool. The maker calls this the key to the method, more so with stiff sidewalls.

5. Second bead

   Turn the wheel so valve and rim lock are at the top, start the bead opposite them, with a tire iron if the tire is stiff, and work both sides toward the rim lock. Push the rim lock in before the last section goes over, then tighten it.

Two points where this site follows the tire makers instead of the tool maker. For lubricant, the maker's page names soapy water or glass cleaner; the tire makers' motorcycle bulletin asks for approved tire lubricant and rules out antifreeze, silicones and petroleum-based lubricants, so use a product made for the purpose, as described under tire mounting lube. For seating, the maker's page gives no pressure; the bulletin says to follow the tire manufacturer's instruction for the maximum bead seating pressure and otherwise not to exceed 40 psi.

For whom, and for whom not

What it does not replace

The tool sits between other tools, not above them. Breaking the bead needs a bead tool, compared under motorcycle bead breakers. Removing the old tire and starting a stiff bead need irons; see tire spoons. A related helper for spoked wheels is the Motion Pro Bead Buddy II^* (paid link), which hooks over a spoke and holds the bead in the drop center while irons work the other side. That is the same goal, keeping the bead in the well, reached with irons instead of a push rod.

Riders who want one machine for breaking, removing and mounting are looking at a different class of tool, described under dirt bike tire changers and ranked under best motorcycle tire changers.

The complete order of work is in how to change a motorcycle tire, and the overview of tool types is on the page about motorcycle tire changers.