2 new frame plugs for the upper rear frame rails on various late 70's to early 80's Yamaha's or any 16mm ID tube. CNC machined delrin with an added 2.5mm chamfered extension compared to OEM. Made to be a press fit like the stock part, two different tapers help to self align the plugs when tapping in. 

Fits:

1978-1979 YZ100

1979-1982 YZ125

1978 & 1980-1985 YZ250

1977-1979 YZ400

1980-1981 YZ465

1982-1985 YZ490

1980-1981 IT175

1980 TZ125

Dimensions:

Overall length: 12.5mm

End of taper to shoulder: 10mm

Width(maximum): 19mm

Made to be a press fit into a 16mm(.63") inner diameter tube with 1.5mm walls.

Feel free to ask any questions. Different sizes can be made upon request.