Tein specifically says to use the OEM bump stops unmodified because they have the same travel distance as OEM struts. The smaller 2/3 segments are extremely soft and you can compress them with your fingers, they are there to create a smooth transition to the harder segment that actually stops your strut from damage. In conclusion: you should use the full OEM bumps stop, there is no need to cut it. If you do cut, it will just cause a harsher slam when you bottom out. Despite my own advice, I went ahead and cut off the smaller 2/3 and kept only the top widest portion which is needed to pressure mount the top of the boot to the top hat. I did this because most people recommended cutting it despite having done zero research or reaching out to the manufacturer for clarification. This is a classic case of bro-science or an old wive’s tale. If I had to do it again, I’d leave the bump stops uncut. There was also confusion about Hydraulic Bump Stoppers in the Endurapro, but despite having HBS, Tein specifically says to use the original bump rubbers unless Tein provided you with new ones.
View attachment 980032