Is the Maxima Plush Dynamic Suspension Lube backwards compatible? Yes! This lube can be used with all Signature Series forks: Pike, Lyrik, ZEB, BoXXer, SID SL, and SID, and is also backwards compatible where you would use 0W-30. Related articles What makes Maxima Plush Dynamic Suspension Lube different than what we’ve used in the past? Why use “Heavy” oil in our lightest fork? Can I retrofit the Ultimate bushing package on RockShox Select + and Select forks? Can I buy ButterCups aftermarket and add it to my existing RockShox fork? Are there differences in RockShox lower legs between Ultimate and Select+?