Starting Shaft 21BB

The HPI Starting Shaft 21BB (part number HPI-1432) is a genuine HPI spare designed for straightforward maintenance and dependable repairs. Built to OEM standards, it helps keep your HPI nitro engine starting system operating smoothly.

Product Overview

Identified by HPI as a starting shaft for Nitro Star S-25 and F Series engines, this original replacement part ensures proper fit and function consistent with HPI’s manufacturing quality. It’s a practical choice when refreshing worn components during routine service.

Suggested Compatibility

Based on the manufacturer reference, suggested compatibility includes:

• HPI Nitro Star S-25 engines
• HPI Nitro Star F Series engines

Choose genuine HPI parts like HPI-1432 to maintain reliability and performance across your nitro powertrain.