These high quality intake manifolds for the Triumph Bonneville's from 1969-1972 allows fitment of either the Amal or Mikuni VM carburetors.  The manifolds are two coarse threaded aluminum CNC machined manifolds with 16 threads per inch.  The manifold kit includes two thread in manifolds, two rubber hose adapters, and four clamps.  Manifold kit fits 1969-1972 Triumph Bonneville's with coarse threaded (16TPI) manifolds.  Rubber hose adapters are also available separately.


Intake manifolds have a 38mm OD x 33mm ID at the carb end.  The ID tapers down to 29mm at the engine side.  Overall length is 42mm.  The threaded width is 25mm and the smooth rubber boot width is 18mm.  The rubber hose adapters are approximately 43-44mm in length and 5mm thick.