Redspeed Kart introduces, for the single-speed, shifter and DD2 categories, the new top-range chassis: the RX RR. Climax of the evolution of the work of the OTK Kart Group R&D department, the new RX has some interesting new features

CIK/FIA 012/CH/99
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OK and KZ versions available

Ongoing development


The RX RR, the new flagship chassis of Redspeed Kart, is the peak of innovation and experience gained in the field by OTK Kart Group. Actually, the new RX RR keeps faith with the company mission "Designed, Engineered, Manufactured, 100% Made in OTK - Italy" at the base of all OTK Kart Group products. The rigorous control of the entire design and production chain, thanks also to the use of automated processes that guarantee extremely high-quality standards, has always been the distinctive element of the Italian company.

M10 Fairing Kit


OTK Kart Group R&D department has been for years a pioneer in the aerodynamic research and development of its karts through wind tunnel analysis and CFD computer simulation. This relentless research activity has led, over time, to the launch of revolutionary solutions in the field of fairings such as the M7 front spoiler, with its innovative design and ability to reduce aerodynamic resistance, resulting in increased performance. This model, now made of black plastic, is now complemented by the new M10 kit for the RX RR. It includes the new side bumpers, which are lighter in weight and smaller in size, to the benefit of performance and better cooling of the rear tyres. But that's not all, because the front spoiler and rear protection have also been renewed in order to meet the increasingly demanding requirements in terms of FIA safety regulations.

BSD Caliper


Confirmed for the new RX RR, in its single-speed version, the BSD braking system that has significantly contributed to the achievement of excellent results in the most prestigious races in the world: just consider that the braking system signed by OTK Kart Group has equipped both karts winners of the 2021 titles for the single-speed senior and junior categories. The rear brake caliper, forged in one piece, is equipped with a stroke recovery system and features two Ø 34.5 mm pistons. This is combined with a two-piston pump and a brake line with outer cover stainless steel braid, PTFE inner tube. The caliper and brake pump are made of Ergal, a material that stands out for its excellent mechanical strength, which is further increased by the hard oxidation process that reduces wear on the moving parts.

Driving position


Driving comfort is fundamental for the performance of every driver. This aspect plays a central role in the entire development process carried out by OTK Kart Group for the RX RR, which offers several new features aimed at refining even the smallest details. To be highlighted, in fact, is the standard supply of a footrest that allows a greater range of adjustment and, in addition, new seat supports. These solutions are in addition to the already well-known HGS steering wheel, equipped with high grip and comfort rubber grips, and the inclined hub, for a fully ergonomic driving position.

BSS and BSZ Brakes


OTK Kart Group produces according to well-defined standards: the use of selected materials of the highest quality and their processing using automated machines and processes that ensure full reproducibility of each component, always guaranteeing the highest quality parameters. These principles are more fundamental than ever when it comes to braking systems for shifter categories, classes in which braking capacity plays a primary role in performance. With the arrival of the RX RR, Redspeed Kart proposes as standard a new system for the shifter classes called BSZ, equipped with brake pumps with larger diameter pistons that make the braking even more modular. For the DD2 version, instead, the reference system remains the BSS only, equipped with single-piece calipers, front with four Ø 22 mm pistons and rear with two Ø 34.5 mm pistons.