Two stroke pipe repair kit to repair dented 2 stroke exhaust pipes on Yamaha YZs. If you have the need to repair other makes of bikes along with your Yamaha, we can accommodate you. We can make a custom set of clamps or bushings for your kit, depending on your need and budget. Just contact us, we’re happy to help!
Choose the size of kit you need from 125-250cc or the kit that will fit both.
See it in action at https://youtu.be/7j6m3CCVOEc
Please indicate the year, make and cc size of your bike so I can ensure you get the correct size kit for your application.
How it works:
Remove dents from your 2 stroke pipe using your air compressor and a heat source. Your kit contains parts to seal off both ends of the pipe, including an air valve on one end and a gauge on the other. Dents can be removed by applying air pressure and gently heating the damaged area. The increase in air pressure in the pipe pushes the dent outwards.
Built-in 100 psi pressure gauge to monitor the pressure inside the pipe during dent removal offering additional safety. Lesser tools don’t have these.
Pipe can be heated with mapp gas or propane torch but oxy/acetylene is preferred.
FITMENT NOTES: Universal fit on header end for modern pipes. Measure your pipe prior to ordering and/or include the bike year, make and cc size in notes to store upon purchase. This way I can make sure you receive the correct size for your application.
YZ250 fitment specific:
On the newer YZ250 and YZ250X pipes, Yamaha added notches that may exist on your pipe on the muffler end. We have no way to verify the information. We don’t know if it’s the stock pipe or aftermarket pipes that may possess this notching. We don’t even understand why they would have notched the end of the pipe. Word of caution, the gasket material is NOT tear proof. If your pipe does indeed have these 1-2 mm notches that will allow air to escape thereby not allowing the proper seal, DO NOT crank down on the gasket. Just a heads up. Thus far everyone has figured out a way to get a good seal without damaging the gasket.
This is something we would like to address, but we don’t have proper information. We would suggest placing a piece of heavy leather or other heat resistant and cut resistant material on the pipe prior to installing the gasket. You just need something to compensate for the notches.
This is all we know at this point. If you could be so kind and confirm this information when you do look at your pipe that would allow us to make a better product for the newer YZ250 and YZ250X pipes.
1) This kit will not fit the rare FMF ‘SST’ pipe. The stinger end on the FMF SST pipe has a larger diameter and must be milled on a custom order. Please send us an email (sales@rjsmfg.com).
Kit is simple to use. General usage instructions included. For more information and tutorials, enter “2-stroke dent repair” into your search engine.
Pipe not included.
