FTF Performance Valve Guides:
Precision machined cast-iron valve guides featuring a tapered nose design for improved flow characteristics with minimal port obstruction. Can be used as intake or exhaust. Overall length is 2.40″, machined for a .420″ seal. Sold each, Made in the USA. $12.95
| Size | Guide O.D. | Guide I.D. |
| Std. | .5620″ | .3090″ |
| +.001″ | .5630″ | .3090″ |
| +.002″ | .5640″ | .3090″ |
| +.003″ | .5650″ | .3090″ |
| +.004″ | .5660″ | .3090″ |
