Can I put the new Blue Crush lowers on my older SID? No. SID’s new lowers are specific to 2024 SID forks. However, SID SL’s new blue lowers WILL fit on the old SID SL. Related articles Why use “Heavy” oil in our lightest fork? Will SIDMan get an updated blue for his wardrobe? How do I change travel in my RockShox fork? Is the SID fork’s Rebound Knob still able to adjust the SIDLuxe Rebound adjuster? Will there be ButterCups to take the edge off on marathon rides?