This RC-scale replacement drive shaft kit is designed for HPI Bullet MT models and is supplied as a 2-piece set with model number BUL-18012-BK. The items are finished in black steel to serve as front and rear universal shaft replacements on the Bullet MT chassis, intended for maintenance and off-road drivetrain strengthening.
To fit the shafts, remove the existing universal shafts, place the new shafts into the original coupling positions, and secure the retaining hardware while preserving alignment. Inspect hex adapters and hub mating surfaces before installation to ensure correct engagement and to prevent binding.
Upgrading to black steel drive shafts is a straightforward way to recover drivetrain performance lost to wear and to create a stable base for additional drivetrain enhancements. After installation, check for free rotation through the suspension travel and verify there is no excessive joint play.