TRF421 Bulkhead Stiffener Set (1 mm & 2 mm Options)
Unlock maximum chassis tuning potential with this TRF421 Bulkhead Stiffener Set. Featuring both 1 mm and 2 mm plates, this upgrade allows you to precisely control front-end and rear-end flex to match track conditions, driving style, and grip levels. Designed specifically for the Tamiya TRF421, each stiffener installs cleanly onto the bulkheads, increasing rigidity where you need it while preserving the car’s natural balance.
Key Features
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Includes 1 mm and 2 mm stiffeners for ultra-fine flex tuning
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Improves chassis rigidity for more consistent steering response and stability
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Perfect for high-grip or low-grip setup changes
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Precision-cut design ensures ideal fitment on the TRF421 bulkhead geometry
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Quick, tool-friendly installation—swap between plates in seconds
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Optimize corner speed, traction, and overall balance