Norton 16H Carburettor 1". Both Types of Norton Big 4.
Brough Superior 680. Brough Superior SS80.
Stub Fitting size 1 1/8"-28.5 mm
inner size - through carburettor: 1" 25,4mm
Main Jet 170, all sizes available no extra cost
Needle Jet 106, 105,107,108 available please state size
Slide 4, 3, 3.5, 5, available.
Made in England, We can build to order please send anE-mail with your specification
Please look at all pictures