RockShox SID Lower Leg Assembly

These lower legs are specifically engineered for 2024 and newer RockShox SID models with a 35mm chassis. They will not be compatible with older SID versions that feature different stanchion diameters or internal architectures.

No, these lower legs are designed exclusively for 15x110mm Boost spacing. They will not fit standard non-Boost hubs, as the axle width and brake mount alignment are physically different.

This is a bare lower leg assembly. It typically does not include internal bushings, wiper seals, or foam rings, so you will need to source those separately or transfer them from your existing fork if they are still in good condition.

Yes, provided your current fork is a 2024+ SID 35mm chassis model. It is designed as a direct factory replacement, meaning it maintains the exact geometry and alignment of your original setup.

You should consider replacing the lower legs if you have sustained significant impact damage, such as deep gouges or cracks, or if the bushing bores have worn out beyond the point of standard service. It is also a common choice if you simply want to refresh the look of your bike with a new color.