Quick Overview
The Dellorto pilot jet changes the mixture at idle speed up to about a 1/4 throttle openings.
The most popular size pilot jet for trials bikes in the UK is a 35, warmer climates or higher altitudes have less oxygen in the air so require smaller jets.
Fits PHBE, PHBH, PHBL, PHF, PHM, VHSA and VHBT Dellorto Carburettors, can be also used in VHSH and VHSB but they are around 4mm shorter.
These jets are also used as main jets in the following Dellorto carbs MA, MB, PHBG, SHA1, SHA2, SHA, SHB, SHBC and SHBC PK