HPI Racing RS4 40T Set RC Spool - HPI114436

The HPI Racing RS4 40T Spool Set (HPI114436) is a direct-fit differential replacement designed for HPI RS4 series radio control cars. A spool replaces the standard differential unit with a solid, locked axle arrangement, meaning both rear wheels are driven at an equal, fixed rate with no differential action. This suits drivers who want a simpler, more durable drivetrain for straight-line or oval-style running where independent wheel speed isn't needed.

Key Features

• 40-tooth spool design locks both driven wheels to rotate at the same speed, eliminating differential slip
• Direct replacement for the differential unit in HPI RS4 series RC cars
• Reduces drivetrain complexity and the number of moving parts compared to a standard diff
• Suited to oval, drag, or straight-line RC driving styles where a locked rear axle is an advantage
• Manufactured by HPI Racing to fit the RS4 platform without modification

What's Included

• HPI Racing RS4 40T Spool Set

What You Need

• HPI RS4 series RC car to install this spool into
• Basic RC tool kit for drivetrain disassembly and reassembly