Richmond Gear Differential Mini Spool

Richmond Gear Mini Spools are precision-engineered locking differential solutions designed to deliver maximum traction in racing and off-road competition applications. By eliminating differential action and locking both axles together, mini spools ensure both driven wheels rotate at exactly the same speed — transferring 100% of available torque to the ground for uncompromising, consistent power delivery.

Built to Richmond Gear's exacting quality standards, these mini spools offer a lightweight, simplified alternative to full spool conversions without sacrificing strength or reliability. The one-piece construction eliminates spider gears and other differential components, reducing rotating mass while dramatically increasing drivetrain durability under hard acceleration loads. Richmond Gear mini spools install in place of open or limited-slip differentials, utilizing existing ring and pinion hardware for a straightforward conversion.

Key Features:

• 100% Torque Transfer: Locks both axles together for equal, uninterrupted power distribution to both driven wheels
• One-Piece Construction: Maximizes strength and eliminates failure-prone differential components such as spider gears
• Lightweight Design: Reduces rotating mass compared to traditional full spools for improved acceleration performance
• Direct Replacement: Installs in place of open or limited-slip differentials using existing ring and pinion hardware
• Competition-Grade Materials: Manufactured to Richmond Gear's OEM-level quality standards for durability under extreme loads
• Cost-Effective Solution: Delivers full-spool performance benefits at a fraction of the cost of a complete spool conversion
• Simplified Serviceability: Fewer components mean easier inspection and maintenance between events

Richmond Gear has built a decades-long reputation as a trusted name in professional-grade drivetrain components, supplying racers and performance enthusiasts across drag racing, oval track, and off-road competition disciplines. Mini spools are available in a range of fitments to accommodate a wide variety of popular axle housings and carrier configurations — select the correct variant for your specific application.

Important Notice: Mini spools are intended exclusively for racing and dedicated off-road competition use. Because both axles are forced to rotate at the same speed at all times, mini spools are not recommended for street-driven vehicles due to adverse handling characteristics during cornering and turning maneuvers.