Throttle Tube Plastic vs metal handlebar ends - fragile

[steelhorseangel]

Hi riders & wrenchers

Greetings from the UK.

I'm restoring an '84 plain Jane State and come across a problem.

As you know, laughing!:-
The left hand grip tube is metal.

The right hand throttle tube is plastic?
Why? Was it to save money?

To help protect the project, I need to install stainless heavy
handlebar bar ends, but I've just thought this.

There is no problem with the left hand grip tube, only
the right side. Putting a stainless expanding insert into the
plastic throttle tube, may create a fracture, not safe and scary guys.

Is there a metal throttle tube that I can replace and that will keep
me and others safe. Should I get side swiped, I need that right bar
end to be steadfast, rigid and not break up, being plastic!

Any advice, greatly appreciated guys!

Ride safe always!

Angel (female Wing rider & wrencher!)