These rubber spring bumper saddles are based on Maxwell Model Q, but likely could be used on other models. They are cast in C875 silicon bronze. These are commonly found with broken ears due to running loose spring u-bolts.

Price: $65 pair

New rubber spring bumpers are 3D printed from rubber filament. I can custom make spring bumpers for just about any design if you provide me with a sample.

Price: $28 pair