This is the 'Smooth' type SOHC outer timing cover fitted to Norton International and Manx models from 1938 onwards.
This version is the sports\racing version that has a rev clock boss cast in (generally considered the most desirable type). This type was fitted as standard on pre-featherbed Manx Nortons, but was often seen fitted to Norton Internationals, if wanting to fit a rev clock. These versions have been faithfully replicated from an original pattrn, even including the original casting number and inner webbing - from heat treated LM25TF alloy.
They have then been CNC machined and for the aluminium versions they are bright polished and ready to fit.
3\16" BSF screws are used to attach the rev clock gearbox to the timing cover (Item 0974) and we supply a pair with every timing cover purchased.
We can also supply a pretty lasercut lozenge shaped stainless steel cover (Item 0325), should you wish to fit one of these covers to your engine, but do not yet have a rev clock for it. We also supply rev clock gearbox's in various gears and rotations to fit this cover and your rev clock.
These are supplied polished, but as with the magnesium type, we also spray in light Duck Oil when they are packed.
12/11/2020: These have been out of stock for 2 years - but we now have a new batch available, in the past they have proven to be the most popular and in demand type of the 4 variants we offer