120 – 180 Knuckle Manifold

Description

These manifolds fit all OS (except the Surpass E*) and fit all OS copy four strokes from 120 – 180 size, as well as the new RCV 1.30. They are supplied complete with lock nuts. M14x0.75

* The Surpass E is the only OS four stroke to have a different thread in the silencer from the thread in the cylinder head. Our manifolds have the same thread each end and therefore do not fit the silencer supplied with the E. An easy fix is to purchase an inexpensive ASP 1.20 silencer body