I would purchase my jets from this site. New Speedmaster They have main and pilot jets as well as shims. I purchased mine from them and they are the right ones.

When I had my ride equipped with long TORs, Uni filter, all snorkels removed and I enlarged the retainer that secured the filter, I ended up with 135 mains, 42 pilots and TBS needles. Before I switched the needles I used 2 shims under each of the stock needles.

You might want to purchase an assortment of main jets and some 45 pilots to test. I'm assuming your bike stock has 120 mains and 40 or 42 pilots. Mine had 42s. You could pull the float bowl and look at the main and pilot jets to see what size is installed. May need a mirror for the pilot.


12 Rocket Roadster
03 Bonneville America
69 BSA Firebird Scrambler
73 Yamaha TX 750