PTNHZ RACING Universal 4PCS Blue Polyurethane Exhaust/Muffler Hanger: Efficient Bracket Bushing Mount - 10mm Short Rubber Insulator Review

So far so good. It looks more like 10.5mm to 11mm holes. But on my integr 94 it works. It holds my HKS exhaust with no problems.

They have been replaced with original exhaust system brackets. My Borla exhaust was shaking a lot with stock mounts. Now it's stuck.

Holy hardness. They compensated for any play in my NB Miata exhaust. The fit on the hangers is tight. To be honest I'm very worried about removing them when I need to reset my exhaust.

It was a little tight and took a while to put on the spikes, but they still worked. The size and location of the holes are perfect. The size of the hole was quite narrow to fit through the notches but one would move about appropriately.

I only bought them because the navy blue matches the brake calipers and other parts of the Volvo C30 design. They look amazing and work great. The material is quite hard compared to the original parts. This might make them a bit more difficult to install (not a problem anyway), but it also gives the impression that they will last a long time.

I bought these for my stock exhaust on my Na Miata race car and the hanger is smaller in diameter than the inside of the polymer hub so it fits snugly she is not tight . all i thought i would try for $15 but they didnt work and i wanted to warn my people lol. You can use tape on the hangers to make them more secure but I chose another brand that really fits.

I installed a 2000 Miata and the exhaust no longer rattles. It also holds the exhaust very firmly in place. I don't know how they will hold up over time. They were quite difficult to fit, I recommend inserting them into the muffler hanger first, then using a jack to align the muffler to line up the hole with the frame mount and inserting them with a pry bar. how difficult it will be for them to get out in the future.