This product is a differential locker spool designed for Grom series RC vehicles to replace the internal spider and side gears with a solid locking piece. Machined from durable material, it locks both axle outputs together so wheels turn at the same rate, increasing traction in low‑grip or high‑power conditions. The precision fit helps maintain smooth engagement and reduces drivetrain slop compared with worn or stock diff gears. Its direct replacement design installs into the existing differential housing without modification. • Differential locker spool for Grom series RC vehicles• Locks both axle outputs together for improved traction• Precision‑machined for smooth engagement• Reduces drivetrain slop versus worn internal gears• Durable construction resists wear under load• Direct replacement in existing diff housing• Ideal for low‑grip, drag, or high‑power applications
