Replacement for all stock hardware to screw in studs with machined nuts
2 nuts (4 nuts for the long version)
8.8 grade or higher quality bolts
The short bolts are 3/8" of an inch in length
The long bolts are 1/2" inch in length
Which one do you need, short or long? Most PLM headers utilize the short version. Once the slip-fit collector is fully inserted, the short version hardware fits perfectly. On rare use cases, such as the H-Series Ramhorn header, where the 4-1 merge collector needs more adjustability, you will need the long version to allow more play in the slip-fit collector.