Specialized Demo Carbon Bottom Bracket Main Pivot Inner Spacer

No, this specific part number (S150400008) is engineered exclusively for the 2015 Specialized Demo 8 FSR carbon frame. Using it on other model years or different frame materials may result in improper fitment and potential damage to your suspension linkage.

Suspension pivot points on carbon frames require exact tolerances to prevent play and ensure smooth movement. A generic spacer may not match the precise dimensions required, which can lead to creaking, premature bearing wear, or structural damage to the carbon frame itself.

It is not always necessary to replace the spacer, but you should inspect it closely during every major suspension overhaul. If you notice any scoring, pitting, or signs of wear on the surface, it should be replaced immediately to ensure the new bearings seat correctly and operate without friction.

No, this product is the inner spacer only. It does not include the bearings, bolts, or other hardware required for a full pivot assembly rebuild.

The most common indicators are persistent creaking sounds coming from the bottom bracket area, noticeable lateral play in the rear suspension, or a rough, gritty feeling when the suspension cycles through its travel. If you experience these issues, inspect the spacer for physical deformation or wear.