These front suspension arms are an RC-scale replacement for HPI Bullet platforms, supplied as model BUL-18003-GU. The gunmetal alloy construction is intended to slot into the stock Bullet 3.0 MT and ST front suspension without changing factory geometry.
They are ideal when you want a direct-fit spare or a basic upgrade to reduce control loss from flex compared with stock plastic parts. Installation is straightforward: remove hub and pivot pins, swap arms, reinstall the vehicle hardware and verify free travel and full steering sweep. No specialist tools beyond common hex drivers are needed.
From a tuning standpoint the alloy arms help maintain alignment during hard landings and high-speed cornering on nitro off-road setups. They produce minimal change to ride height, so tune the dampers and toe/inset to refine handling rather than altering the arms.
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