Like the way they look and function. Do not cover too much of the head as some others do. Install was straight forward with all included hardware. Right side required heating of the inner rubber to allow pushing the guard in for holes to line up enough to get the bolts to start. Left side was a breeze, all holes lined up and fit well with no hassle. I’m anticipating that with time all will mold to fit so it will be easy to reinstall after valve check. I’m very happy with these guards.

Easy to install all hardware is included.
They look great cylinder head protection without adding much weight.

Delivered quickly, great service as always from Sierra, I was going on a road trip so I really needed these as an extra safety precaution. Sierra got them to me in super fast time. Quality BMW product as always, relatively easy to fit, like the way they work perfectly with factory engine bars.