The classic Monza quick opening push button fuel filler caps are much easier to operate with your gloves on.
Easy to fit with all necessary parts included, the cap is aluminium with a satin polished finish.
Note - The cap is not a mirror polish finish and may
have minor marks from the casting process.  They can be polished more for a mirror finish.

This is THE most complete and easiest to install Monza Gas Cap Kit (NO NEED TO USE WASHERS TO SHIM THE CAP TO CORRECT THE ORIENTATION) available for these bikes.
Align cap in desired position and set and forget the set screws, no stacking of gaskets, different thickness gaskets etc. 

Don't let the price fool you, this is the best Monza cap kit on the market!

Fits 2001 and up Triumph Bonneville, T100, Thruxton, Street Twin, Street Cup, Street Scrambler, Bobber, Bobber Black, Speedmaster, T120 and Scrambler. It will also fit the Thunderbird and Adventurer.

install instructions: here