The Mikuni RS40 carburettor kit gives a massive boost – up to 25% – in power for Triumph America, Bonneville, Scrambler 900, Speedmaster and Thruxton 900 twins.
The kit will fit both 790cc and 865cc models and will adapt to the stock air box, inlet rubbers and cables. The carbs are supplied with jetting to suit and will rarely need further tuning. The expense of a rebuild for old and worn OEM carbs can far exceed the cost of these new units, plus you get the significant increase in power with smoother delivery and no flat spots.
For details see: www.mikunioz.com/shop/mikuni-rs-40-carb-kit-triumph-790-865/