See: Mugen Seiki

Mugen have introduced the new MBX8 Eco Team Edition that includes many of the same parts from the MBX8 Worlds Edition. The MBX8 Eco Team Edition includes 1mm wide offset wheel hubs increasing stability and cornering and the E2146 inline front uprights offering smoother steering compared to the stock E2147 trailing front uprights and work great in high traction conditions. Also included are the -3mm front upright arms that improve the initial steering response and make the vehicle more stable through the middle and exit of the corner. The new upright arms also reduce bump steer and make the vehicle more predictable in bumpy conditions. The front (84.5mm) and rear-center (115mm) dogbones reduce friction from the stock universal driveshafts. Less friction will give the vehicle a more efficient drivetrain, increase acceleration, and provide more traction. The dog bones are lightweight, durable, and will increase traction. Another option part included in the kit is the +15mm wing mount. It has more adjustment and will help increase mid corner rotation and be more stable in high speed conditions.