This is an optional Tekno RC Lightened Hardened Steel Differential Coupler, and is intended for use with the Tekno RC SCT410 4wd Short Course Truck. These couplers are machined from hardened steel, and reduce rotating mass by 5 grams to provide a more efficient drivetrain. Package includes one coupler that can be used in either the front or rear position.

Features:

• Reduces rotating mass by 5g
• Hardened steel construction for ultimate durability