HPI Baja 5b/5b Ss/5T Steel Clutch Bell 5mm Bore by GPM SBJ613  [SBJ613]

Steel clutch bell for Baja models

This GPM SBJ613 clutch bell is a steel, 5mm-bore replacement part intended for HPI Baja platforms listed in the product name. It is supplied as a single-piece set and includes the retaining screw and lock nut required to secure the bell to compatible pinion arrangements.

The component's role is strictly within RC driveline assemblies: it transmits torque between the motor pinion and clutch assembly, and its steel construction favors wear resistance when paired with matching pinions. The 5mm internal bore is the defining fit dimension, so confirm your motor or pinion shaft size before installation.

Installation notes: remove the existing clutch bell from the clutch assembly, slide the SBJ613 onto the pinion or shaft aligned to the 5mm bore, fit the supplied screw and lock nut, and torque to appropriate small‑model tightness to avoid loosening under vibration. Use proper thread engagement and inspect runout after fitting to ensure smooth engagement with the spur gear and clutch shoes.

Use this SBJ613 clutch bell when replacing a worn steel bell or when matching gearing components for HPI Baja 5b series models, keeping alignment and secure fastening as priorities for reliable driveline performance.