Development and Track Intent for the RB6
For serious RC racers, the Kyosho Ultima line is known for race-ready engineering. The Kyosho 30068 - 1/10 EP 2WD Racing Buggy Ultima RB6 builds on that pedigree with refinements focused on handling and setup flexibility, making it a capable choice for competitive 2WD events and advanced hobbyists.
Strong Duralumin Chassis for Consistent Handling
The Ultima RB6 uses a duralumin chassis to balance stiffness and light weight. Constructed from "7075-T6" aluminum, the plate increases rigidity while keeping weight down. The hard anodized finish and stepped edge details reduce unwanted flex and help maintain consistent lap times on smooth, grippy surfaces.
Suspension Geometry and Steering Adjustments
Gullwing rear suspension arms work with tuned damping to deliver stable traction and predictable rebound. The updated steering layout lets you dial in Ackermann settings to suit different corner radii, while X-GEAR springs provide repeatable response for quick setup changes between heats.
Motor Placement Options and Battery Choices
The midship motor position gives nimble turn-in and traction on high-grip carpet and asphalt. If needed, the motor can be moved to a rear location for better behavior on rougher surfaces. The chassis accepts straight, separate, or short Li-Po packs so you can shift weight and tune the center of gravity for your preferred handling balance.
Durability and High-Load Parts
Key drivetrain upgrades include tungsten diff balls and reinforced idler gears for longer service life under high-power setups. A large slipper clutch copes with strong motors, and gun metallic anodized aluminum components add both strength and a refined look. One-piece steel drive hubs and hardened ball ends increase crash resilience and control precision.
Specifications
- Scale: 1/10
- Length: 395mm
- Width: 249mm
- Height: 140mm
- Wheelbase: 285mm
- Tread (F/R): 221mm / 201mm
- Weight: 1,620g (approx.)
- Gear Ratio: 2.6:1 (2nd)
The Ultima RB6 suits racers who prioritise precise steering and a chassis that responds to setup changes. Its component choices make it a flexible platform for refining lap time consistency.
