Valve Stems - What do they fit

I recieve frequently e-mails asking me if the valve stems I carry will fit your motorcycle.  If anyone has a question if it will fit, please ask me.  I will research the OEM valve stem used on your vehicle to know if the valve stem will fit.  99.5% of the time the valve stem fits your rim.

As an example for a '03 Suzuki GSXR750 the Suzuki part number for the valve stem is 43130-24A00. Suzuki calls this a TR412 valve and you can find the part number on most every Suzuki with tubeless rims. TR412 is an industry code for a "Snap-in" tire valve with an effective length of 7/8" of an inch long (22.2mm) and a rim hole opening of 0.453” or 11.5mm. The TR412 is a snap-in design and is rated for 65psi in most cases.

In general most Japanese motorcycle valve stems for tubeless motorcycle tires use a 11.5mm or 0.453" valve opening. Some older European motorcycles used a 8.3mm or 0.327" valve opening.  These older european motorcycles were during the transition from tube type rims to tubless type rims.

Beyond the industry standard, Snap In TR412 valve stem, you can also get Metal Clamp-In valve stems.  Most Clamp in valve stems have a single or double locking nut to hold the valve stem to the rim. These metal designs have a seals on both sides of the rim opening. The metal valve stems are normally rated to 200psi when the valve cap is installed. Also for the Enkei metal valve stems, the locking nuts on the inside of the rim should be torqued down to 25-45 inch-pounds or 3-5 Nm. The goal is not to over torque them down when you install them.

You can also find angled valve stems that might make filling and reading tire pressures a bit easier.  The shorter race version is to minimize the weight while meeting many racing orginzations requirement for a metal valve stem assembly. 

If you have more questions, contact me... KG