If you have to remove the plenums replace the o-rings!

If you have to remove your Riffraff plenums for any reason, change the o-ring. It's cheap insurance!

I bought as a may need, I remembered reading a review about someone in Australia breaking or cutting one upon installation of plenums and decided to get extra. Same o-ring as in plenum kit. Didn’t need this time, but now have a spare.

Unfortunately I broke one of them and could not get one here in Australia. Clay to the rescue. A replacement arrived 4 days later. I can't get this service from a company 5 miles up the road. Thanks again Riff Raff