RockShox SID SL E1 Lower Leg

This specific lower leg assembly is designed for SID Select and Select+ C1 models with 100-120mm of travel from the 2021 model year. It is not universally compatible with all SID forks, so please verify your fork's specific model year and chassis type before purchasing.

Yes, this is a complete lower leg assembly that includes the necessary bushings and seals. It is ready for installation onto your existing stanchions and upper assembly.

No, this lower leg is engineered specifically for a 15x110mm Boost axle standard. It will not fit standard non-Boost hub spacing.

This component is optimized for 29-inch wheels. While it may physically fit a smaller wheel, the geometry and clearance are designed specifically for 29-inch setups, so we do not recommend using it with 27.5-inch wheels.

You will need standard suspension service tools, including a rubber mallet, a socket set for the bottom bolts, and high-quality suspension oil for the lower leg bath. If you are not comfortable performing a lower leg service, we recommend having a professional mechanic handle the installation to ensure proper alignment and seal seating.