70-6420 - Standard Diameter Valve Guide (0.5015"/0.5020")

Colsibro® Trident valve guide, available in standard and oversized diameters:

• Our guides are manufactured in-house from Colsibro®, a high copper alloy material

• The bores are machined using a gun drill that produces a very close tolerance "burnished" bore, which helps to increase the life of the guide

• To ensure maximum concentricity both the bore and the outside diameter are fine-turned in one operation

• The end of the guide has a feathered edge. This ensures no oil can sit on the face and be sucked down the guide when the inlet valve opens and subsequently burned. It is important to ensure this edge is not damaged and the guide should be fitted using a hollow drift

• Fits Triumph Trident T150, Trident T160, Hurricane X75 and BSA Rocket 3 A75

• Manufactured in Coventry, UK