This is the Associated RC10TC6.1 Factory Team Worlds Car Kit. The Associated RC10TC6.1 Worlds Car kit has built upon the already-successful B.R.C.A. and R.O.A.R. national championship-winning TC6.1 platform with several performance-enhancing upgrades that really boost this kit to the next level.The Associated RC10TC6.1 WC is built on their new ultra-narrow 2.25mm-thick carbon-fiber chassis, featuring optimized flex along with maximum chassis-roll ground clearance. This brand new narrow chassis reduces chassis drag during the very hardest cornering. Also included with the Associated TC6.1 WC is the Factory Team Vertical Ballstud Bearing Caps; previously available only as a Factory Team upgrade, the vertical ballstud bearing caps give you much finer increments of adjustment. This increased adjustability allows you to fine tune the suspension with even more precision than previously possible.The Associated TC6.1 Factory Team came feature-packed, and the new TC6.1 Worlds Car is certainly no exception. Rear caster blocks and hub carriers feature integrated inserts for rear-toe and caster angle adjustment. This allows you to properly adjust these angles by simply changing the inserts, instead of the whole assembly.Its front and rear anti-roll bars feature the H.D.R.C. (High Definition Roll Control) system. Roll stiffness is adjusted and controlled by two wires that mount into the sides of the aluminum center member and link to the suspension arms. The aluminum center member rolls on a bearing surface that reduces friction and provides you with ultra-precise movement.The lightweight rear gear differential gives you superior adjustability, performance, and low maintenance; the front spool features replaceable composite outdrives that retain the low-friction, free-movement performance of the CVA blades.Best of all, the included symmetrical blue aluminum bulkheads are compatible with TC6 chassis components. The Factory Team VCS3 shocksFrom the ManufacturerRC10TC6.1 Worlds Car kit builds upon the already-successful R.O.A.R. and B.R.C.A. national championship-winning TC6.1 platform with several performance-enhancing upgrades that boost the car to the next level. The TC6.1 WC is built on a new ultra-narrow 2.25mm-thick carbon-fiber chassis with optimized flex along with maximum chassis-roll ground clearance. The new narrow chassis helps reduce chassis drag during the hardest cornering. Also included in the TC6.1 WC are the Factory Team Vertical Ballstud Bearing Caps. previously available only as a Factory Team upgrade. The vertical ballstud bearing caps provide finer increments of adjustment, which increases adjustability and allows the racer to tune the suspension with even more precision than before. The TC6.1 Factory Team came feature-packed and the new TC6.1 Worlds Car is no exception. Rear hub carriers and caster blocks feature integrated inserts for caster and rear-toe angle adjustment. This means you can adjust these angles by merely changing the inserts and not the whole assembly.