Tony Kart Racer 401 TS

Winning basis

AT THE HIGHEST LEVELS FOR OVER TWENTY YEARS

Ever since its debut in 2004, the Racer 401 started a history full of international successes, including no fewer than ten world titles, becoming the flagship chassis of Tony Kart’s racing programme. This path goes on with the 401 TS, the latest evolution of a design that has been constantly refined thanks to the cooperation between the OTK Kart Group’s R&D department and the Tony Kart Racing Team. The 2027 Model Year is featured, above all, by developments in its components. The Direct Drive version features the new HFT stub axles, while the Shifter version features the HFZ ones; they are completed by a brand-new 180 mm floating brake disc and, for the shifter configuration, a new chain tensioner. These improvements which complete a well-established technical foundation, enhanced by an update to the design of the stickers kit for the bodywork.

HFT and HFZ stub axles

MORE CONTROL AND FLEXIBILITY

Among the most significant changes introduced on the Racer 401 TS are two new stub axles, developed for the different versions of the frame: the HFT model is fitted to the Direct Drive configuration, while the HFZ is designed for the Shifter. Both solutions have been designed with the aim of improving driving and enhancing the kart to adapt to the various conditions on the track. Next to this, a more immediate feel for the front end, which makes the driver’s perception of the chassis’ reactions more intuitive.

BWD Braking System

DESIGNED FOR THE DIRECT DRIVE CLASSES

The BWD braking system, designed for the Direct Drive classes – both Junior and Senior – only employs high-quality materials, aimed at ensuring an extremely high-level of the component efficiency. The concept featuring the design has resulted in a braking system able of significantly improved heat dissipation, thus both reducing the temperature of the brake fluid under load and giving drivers a fully efficient braking in all conditions, with consistent performance over time. For the 2027 Model Year, BWD has introduced a brand-new 180 mm diameter floating disc, designed to further optimise braking efficiency, improve performance consistency and reduce pad wearing.

BWZ Braking System

TOP BRAKING IN THE SHIFTER

The solutions adopted on the BWD model, designed for single-speed classes, are also applied to the BWZ braking system, which is specific to the Shifter categories. Here too, the system’s features ensure high heat dissipation capacity for the pump and calipers, resulting in lower brake fluid temperatures. The system is completed by a brake force distributor and the front calipers which design includes fins and spacers engineered to improve heat dissipation and structural rigidity. As with the BWD model, the BWZ also features a new 180 mm floating disc.

M11 Bodyworks

A REFRESHED LOOK, MAXIMUM EFFICIENCY

The chase for ever-greater aerodynamic efficiency has led the OTK Kart Group’s R&D department to develop the M11 bodywork kit, which complies with current FIA regulations. The data obtained by the OTK Kart Group’s R&D department through CFD computer simulations and wind tunnel testing, combined with data coming from track testing by the Tony Kart Racing Team, has led to the creation of the front spoiler and front bumper, both featuring unique designs that ensure a substantial reduction in aerodynamic drag, resulting in improved performance on the track. Pairing the two components known as the M11 are the M10 side bumpers, is the full-coverage floor – designed to increase aerodynamic efficiency – and the rear protection fitted with the FIA anti-launch device. Furthermore, the entire package is decorated with new-designed stickers, which enhance the style of the previous version while keeping the colours and distinctive elements of the Prevalle brand.

Pedals and wheel

TAILORED DRIVING SEAT

The evolution of the Racer 401 TS also includes several familiar features, such as the multi-adjustable pedals and the inclined steering wheel hub of the OTK Kart Parts range, which ensure a bespoke driving position. Completing the package of features kept as in the previous models is the HGS steering wheel, whose high-grip rubber grip significantly reduces the driver’s effort while driving. This combination of features, developed in cooperation with the drivers of the Tony Kart Racing Team, ensures, quite simply, to achieve an ideal driving position for kart drivers of all sizes.

DD2 Version

SPECIFIC DEVELOPMENT

The Racer 401 TS, in this specific version designed for the DD2 class, features the new HFZ stub axle and the BWZ braking system with a 180 mm floating disc, as well as updated graphics of the stickers kit. The exhaust support, however, remains distinctive: it is removable and has been specifically designed for the engines of this category.

	OK	KZ	DD2
FRAME MATERIAL	Molybdenum chrome steel	Molybdenum chrome steel	Molybdenum chrome steel
TUBES Ø	30 mm	30 mm	30 mm
WHEELBASE	1045 mm	1045 mm	1045 mm
AXLE Ø	50 mm with CIK-FIA stamp	50 mm with CIK-FIA stamp	40 mm
BRAKING SYSTEM	BWD with stub axles evolution type and DOT 5.1 lubricant	BWZ with stub axles evolution type and DOT 5.1 lubricant	BWZ with stub axles evolution type and DOT 5.1 lubricant
INCLUDED ACCESSORIES	Magnesium components, MXJ wheels, front torsion bar, standard aluminium pedals	Magnesium components, MXJ wheels, front torsion bar, standard aluminium pedals	Magnesium components, MXJ wheels, front torsion bar, standard aluminium pedals
BODYWORKS	M11 spoiler M11 front spoiler with CIK-FIA homologated connections M10 fairings stickers kit with new graphics	M11 spoiler M11 front spoiler with CIK-FIA homologated connections M10 fairings stickers kit with new graphics	M11 spoiler M11 front spoiler with CIK-FIA homologated connections M10 fairings stickers kit with new graphics

Tony Kart Racer 401 TS

AT THE HIGHEST LEVELS FOR OVER TWENTY YEARS

MORE CONTROL AND FLEXIBILITY

DESIGNED FOR THE DIRECT DRIVE CLASSES

TOP BRAKING IN THE SHIFTER

A REFRESHED LOOK, MAXIMUM EFFICIENCY

TAILORED DRIVING SEAT

SPECIFIC DEVELOPMENT

Gallery

Axle

Tubes Diameter

WHEELBASE