Universal Bronze Valve Guide & Stem Seals 5/16 7.9mm 12mm Trojan! not Colsibro

THESE ARE NOT CHEAP MANGANESE BRONZE GUIDES LIKE SUPERTECH, FERREA OR OEM PARTS!

Made from Trojan bronze same material as F1 which is the next grade up from Colsibro

OD 12.05mm for 12.00mm guide bore

ID 7.90mm semi finished for honing after installation

Length from bottom of seal 40mm

Total length 45.7mm

Set of 8 guides with Genuine Elring stem seals

I make custom valve guides to any size in any quantity

All CNC machined in house so NO MIDDLE MAN!

YouTube link to how they are made

https://youtu.be/E2_7NsMgMoU

Also provide full cylinder head machining service

Feel free to message with any questions

Thanks