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The R4K is an all-new racing collar for 2016. It features a revolutionary Koroyd core with superior shock absorption and a reinforced nylon upper shell. The chassis has been completely redesigned to be lighter and more aerodynamic. In an impact, your head is pushed down onto the racing collar. The R4K effectively fills the gap between your helmet and shoulder with Koroyd, which absorbs impact energy better than standard racing collar materials.
Koroyd core designed for superior shock absorption.
Reinforced nylon upper shell.
Lightweight, aerodynamic chassis design.
Rapid easy front entry closure system.
Integrated X-Strap cleats.
Polyurethane foam base.
Koroyd Engineered Base:
Superior Energy Absorption: The Koroyd structure has extremely efficient and consistent energy absorption properties. The cores decelerate the energy of an impact to reduce final trauma levels.
Light on Weight - Strong on Performance: Koroyd is an extremely lightweight core, made of 95% air.
Performs When Heat Is On: Koroyd's mechanical properties remain stable in extremely hot and cold environments. Traditional energy absorbers suffer from reduced energy absorption capabilities as they become hot and soft or cold and brittle.
piston TM Racing 10085 Represents the elite of engine technology for KZ categories. Designed specifically for the last generations of engines (KZ10C until R2), this model to Flat sky (zero degrees) is the absolute weapon to optimize combustion. Equipped with a Eightened segment of 0.8 mmIt drastically reduces internal friction, releasing more power at high speed.
The Valve box cover (or intake conveyor) of 29 mm is the major technical evolution of the X30 engines since 2018. Located between the carburetor and the pyramid of valves, its role is to "guide" the vein gas aerodynamically. Its 29 mm inner conduit is perfectly aligned with the new carburetors, eliminating turbulence for more frank acceleration and maximum engine fill.
The game of 0.30 mm fiber valves is the standard for motorizations Iame. Unlike carbon which is more rigid, the fiberglass in 0.30 mm offers excellent reactivity to the opening, which greatly promotes the Couple at low and mid-speed. It is the ideal choice for winding tracks where the turn output revival is crucial, or for pilots seeking a more stable and less sensitive carburation.
The Complete flap box with carbon flaps is designed for karting engines IME X30 and Ka100. Key element of the intake system, it allows to regulate the air-fuel flow entering the engine to optimize the response to acceleration and overall performance.
Lid valve box (conveyor 27 mm) x30 av.2017
The Full flavor box iame is the organ that regulates the entrance to the air-petrol mixture in the low engine. This set includes the box holder (pyramid), high quality fiberglass flaps, stops and fixing hardware. Designed specifically for IAME engines, it ensures total sealing in compression phase and maximum opening when admitting for optimal cylinder filling.
The Full crankcase Rotax black (ref. 296161) Represents the internal chassis of your engine. Designed for versions Evo and the models produced after 2014, this pair of housings (right side and left side) has a high-strength black surface treatment. They are machined together in the factory to ensure perfect crankshaft alignment and transmission shafts, thus ensuring optimal performance and increased longevity.
The R4K is an all new racing collar for 2016 .