Kyosho Ultima RB7.5 1/10 2WD Electric Off-Road Buggy Kit

Championship-Winning Legacy

The Kyosho Ultima RB7.5 builds on the championship-winning legacy of the Ultima series with refined upgrades for peak performance. Big-bore oil shocks with X-ring seals ensure smooth operation and reliability, while lightweight carbon fiber shock stays enhance durability in intense racing conditions. The addition of a front shock stay guard, aluminum bulkheads, and hub carriers improves rigidity and broadens tuning options. With aerodynamic enhancements like a rear spoiler, upgraded rear wing, and front wing, the RB7.5 is engineered to dominate on both dirt and high-grip carpet tracks.

About the RB7.5

Chassis

The Kyosho RB7.5 features upgraded 4mm thick carbon fiber front and rear shock stays, replacing the plastic components from the RB7 for enhanced strength and rigidity. This improvement not only boosts durability in high-impact racing conditions but also provides better protection against damage during rollovers. Additionally, a standard resin protector helps safeguard both carpet and artificial grass surfaces, ensuring longevity and consistent performance across various track types.

LCG Design & Transmission

The low center of gravity (LCG) design of the Kyosho Ultima RB7.5 ensures improved stability and cornering performance, making it well-suited for both high-grip carpet tracks and traditional dirt surfaces. By lowering the vehicle’s weight distribution, the chassis minimizes body roll and enhances responsiveness. The 2-gear midship transmission optimizes power transfer while maintaining a well-balanced chassis layout, providing smoother acceleration and greater traction. This refined drivetrain contributes to the buggy’s precise handling, allowing racers to push the limits in competitive settings.

Suspension

The Kyosho RB7.5’s suspension system has been significantly upgraded for improved handling and adjustability. Updated aluminum oil shocks with 13mm pistons enhance stability at high speeds and absorb impacts more effectively, while upgraded springs further refine performance. The redesigned aluminum rear hub carriers allow for upper rod length adjustments using spacer thickness and increased ball bearing capacity. Suspension pin height can be fine-tuned by replacing the resin bushings, and a redesigned rear bulkhead features a separate inline upper rod mounting point. Additionally, the aluminum upper rod mount enhances suspension rigidity and provides greater tuning options by allowing adjustments to the rod mounting height.

Features:

• Updated 13mm big bore aluminum shocks
• Updated body with improved aerodynamics
• high-precision, durable tungsten differential balls
• Updated rear bulkhead with separate inline upper rod mounting point
• Previously optional front wing is now included as standard
• High Quality Ball Differential Grease
• 2.6:1 Gear Ratio
• LCG battery mount allows forward-back weight distribution adjustments
• Redesigned aluminum rear hub carriers allow for changes in upper rod length
• Compatible with existing optional parts for setting modifications and upgrades