Triumph T2300595 Bonneville Tiger Scrambler Knockback Cover replacement mirror arm bottom rubber This is a brand new single Mirror Boot Rubber.

They do seem to deteriorate with poor weather and cleaning products, but are replaceable thankfully. These are high quality aftermarket parts which are far superior to other reproduction parts for sale elsewhere.

Fits the following: Plus more as well!

Tiger 955i
Tiger 885i
Tiger 800 / XC
Tiger 1050
Speed Triple
Speed Four
Street Triple
Scrambler
Thruxton
Legend
Thunderbird
Thunderbird Sport
Adventurer