Our chassis mounted solid shifters are fantastic. But because they are a 1" shifter, the original E30 boot needs to be stretched to fit the shaft. Being that some of them are already pretty old, we now carry a 1" shift boot to fit with our solid mount shifter. Replaces part 25111220204 but the only difference is that opening is bigger than OEM to be used with our shifter. Fits all manual transmission E30 BMW 3 series cars and will also work for M3s. Takes 5 minutes to replace but is a great improvement! This does not include a manual transmission plastic frame, so you will need to glue this onto your original plastic frame.