HPI Savage 21/25/X Fuel Tank Armor Aluminum HSA-021 by 3Racing  [HSA-021]

Aluminum tank armor

The HSA-021 aluminum fuel tank protection case fits HPI Savage 21, Savage 25 and Savage X nitro trucks and provides a stiff shield around the fuel area to reduce damage from rocks and track debris. The lightweight CNC-style panel focuses on keeping the tank safe while preserving access for maintenance.

Compatibility is limited to the specified Savage models; this is an aftermarket accessory meant to work with the chassis tank region and does not alter fuel plumbing. The profile is designed to clear common chassis components while adding protection.

Fitting is a simple process for anyone familiar with basic RC repair: position the case, use the vehicle's existing mounting holes, and trial-fit before final torqueing. Check for contact with the exhaust outlet and throttle linkages to avoid interference.

Adding the alloy case will slightly increase stiffness and local mass around the tank. After installation, verify suspension balance and make modest tuning changes if the handling feels different during hard cornering or jumps.