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The front hub CRG 40x80 mm (R2.0 range) in anodized finish Gold is a part of the original manufacturer (Original CRG Share), specifically developed to meet the extreme mechanical stresses of the Queen category chassis Kz (gearbox).
With his inside diameter of 40 mm (adapted to the large diameter rockets specific to KZ) and its 80 mm length, This hub of the R2.0 series offers a perfect seat for your front train. In kz, the power of the front braking and the motor torque require absolute rigidity. This CNC machined aeronautical quality aluminum hub enciesive these lateral forces without flexing, ensuring a surgical directional precision in full support. Its superb gold anodized finish protects the aluminum from corrosion while bringing the official "racing" look of the group's high-end chassis.
The hub is delivered factory assembled and ready for the track:
The hub body 40x80 mm aluminum anodized gold (R2.0 series).
2 high precision rocket bearings 40 mm already fitted.
The internal spacer calibrated for perfect alignment of bearings.
The 3 wheel studs high strength to fix your rim.
The clamping ring and locking screw to index your way settings.
* "Hi the artists of the gearbox! The hub R2.0 Gold in 40x80 is the great room, but be careful at mounting. In KZ, the front brake discs heat a lot and transmit all their temperature to the rocket and bearings of 40 mm.
My obligatory trick: never climb these big dry hubs. Clean nickel the rocket axis with brake degreaser and apply a very fine copper grease or high temperature white grease. If you go up that dry, with the calories of braking, the hub aluminum and the steel of the rocket will spray by electrolysis. To get it out at the booth, you will have to tap on it and you risk sailing this beautiful piece !
And for cleaning, avoid too acidic products that tarnish gold anodizing. A cloth shot with brake cleaner or WD40 and it shines like the first day! "*
Place the kart on his carriage. Remove the 3 rim nuts and take out the front wheel. Unscrew the central locking nut of your 40 mm rocket.
Take out the old hub. Inspect the rocket axis and the front brake disc. Clean the axis using brake cleaner and a clean cloth to remove burned platelet dust.
Place your rocket spacing rings according to the desired channel width. Apply the trick to Michel (fine high temperature lubrication), then dramatically slide the new complete hub CRG Gold on the 40 mm axis.
Replace the rocket nut in place. Tighten it firmly and then replace its safety pin. Launch the hub by hand: it must rotate ultra-fluidly, without hard point in the brake caliper.
Q: Does this 40 mm hub adjust to a standard category kart (Rotax Max, x30) ?
A: Not. The category karts without box (single Speed) generally use 17 mm or 25 mm diameter rockets. This 40 mm hub is exclusively reserved for the massive rockets of the KZ (box) chassis, equipped with steering wheel front brakes.
Q: Why choose the 80 mm length rather than a longer or shorter hub ?
A: The length of 80 mm is the most versatile standard. A shorter hub (ex: 65 mm) gives more mechanical flexibility to the rocket and helps release the front train if the track is very eager. A longer hub (ex: 95 mm) increases the stiffness to the extreme to give immediate grip on a slippery or cold track. The 80 mm offers the perfect compromise for all conditions.
Q: Are the internal 40 mm bearings replaceable ?
A: Yes, quite. Although this hub is delivered complete with its factory-mounted original bearings, the 40 mm bearings remain consumables. You will be able to replace them in the future using a conventional rolling extractor, without the need to replace the gold aluminum hub body.
The front hub CRG 25x80 mm (R2.0 range) in black aluminum is a part of the original manufacturer (Original CRG Share), developed for the frames of the single categoriesSpeed high level like the KF, OK, OK or TAG (X30, Rotax) using 25 mm diameter rockets.
With its balanced dimensions of 25 mm inner diameter and his 80 mm longThis R2.0 series hub is an essential standard to refine the settings of your front train. Its 80 mm intermediate length offers the rigidity necessary to ensure a precise and direct front train, while maintaining the flexibility required to allow the chassis to work optimally in curve. CNC machined in aeronautical quality aluminum, it is anodized in matte black for maximum wear resistance and a sober and official racing look.
The short front hub CRG 17 mm high precision aluminum is a part of the manufacturer origin (Original CRG Share), specially developed for the chassis of the range Mini (Mini 60, minimal, cadet) of the group CRG (CRG, Maranello, Dr. Kart).
The "short" version of this hub is an essential setting piece to refine the behavior of your front train. By reducing the contact and clamping surface on the rocket, this hub brings a greater mechanical flexibility by the front train, offering the young driver a brighter direction, a more incisive train and better registration in tight turns. CNC machined in a high quality aluminum block, it guarantees maximum strength for minimal weight.
The front hub CRG 17 mm in size m (Medium) is a high-end frame of the original manufacturer chassis (Original CRG Share), specially developed to refine the guidance of 17 mm rockets (currents on the chassis of the categories Mini, minimal, cadet, mini 60).
The great particularity of this version lies in its internal architecture to double bearing. Unlike standard hubs that only use one bearing at each end, this model integrates two juxtaposed bearings on each side. This technique makes it possible to double the contact surface on the rocket, offering a Distribution of colossal loads and increased rigidity of the front train. By limiting the flexion of the rocket axis during large supports or passages on the vibrators, this hub guarantees a perfect and constant geometry of your front tires.
The front hub CRG 40x80 mm (R2.0 range) in black aluminum is a part of the original manufacturer (Original CRG Share), specifically developed to meet the extreme constraints of the Queen category chassis Kz (gearbox).
With its dimensions of 40 mm inner diameter (for the large diameter rockets specific to KZ) and its 80 mm longThis hub of the R2.0 series offers an ideal support surface to stabilize the front train. In kz, the front braking and the motor torque require absolute stiffness: this CNC machined aeronautical quality aluminum hub enciesces these forces without flinching, avoiding geometric deformation in full support and guaranteeing a Guidance of surgical accuracy. Its matte black anodized finish gives it excellent durability to the projections and the official factory team look.
The front hub CRG 25x80 mm (R2.0 range) in black aluminum is a part of the original manufacturer (Original CRG Share), developed for the frames of the single categoriesSpeed high level like the KF, OK, OK or TAG (X30, Rotax) using 25 mm diameter rockets.
With its balanced dimensions of 25 mm inner diameter and his 80 mm longThis R2.0 series hub is an essential standard to refine the settings of your front train. Its 80 mm intermediate length offers the rigidity necessary to ensure a precise and direct front train, while maintaining the flexibility required to allow the chassis to work optimally in curve. CNC machined in aeronautical quality aluminum, it is anodized in matte black for maximum wear resistance and a sober and official racing look.
The front hub CRG 25x80 mm (R2.0 range) in black aluminum is a part of the original manufacturer (Original CRG Share), developed for the frames of the single categoriesSpeed high level like the KF, OK, OK or TAG (X30, Rotax) using 25 mm diameter rockets.
With its balanced dimensions of 25 mm inner diameter and his 80 mm longThis R2.0 series hub is an essential standard to refine the settings of your front train. Its 80 mm intermediate length offers the rigidity necessary to ensure a precise and direct front train, while maintaining the flexibility required to allow the chassis to work optimally in curve. CNC machined in aeronautical quality aluminum, it is anodized in matte black for maximum wear resistance and a sober and official racing look.
The front hub CRG 25x80 mm (R2.0 range) in black aluminum is a part of the original manufacturer (Original CRG Share), developed for the frames of the single categoriesSpeed high level like the KF, OK, OK or TAG (X30, Rotax) using 25 mm diameter rockets.
With its balanced dimensions of 25 mm inner diameter and his 80 mm longThis R2.0 series hub is an essential standard to refine the settings of your front train. Its 80 mm intermediate length offers the rigidity necessary to ensure a precise and direct front train, while maintaining the flexibility required to allow the chassis to work optimally in curve. CNC machined in aeronautical quality aluminum, it is anodized in matte black for maximum wear resistance and a sober and official racing look.
The front hub CRG 40x96 mm (R2.0 range) in Magnesium (mg) is the ultimate factory piece (Original CRG Share), Developed specifically for the Queen category Kz (gearbox).
With its solid inner diameter of 40 mm and its maximum length of 96 mm, this hub of the R2.0 series is designed to bring a extreme rigidity at the front train. The choice of magnesium instead of aluminum is a high-level technical choice: it reduces the suspended weight while offering exceptional properties of thermal dissipation, which avoids overheating your rocket bearings and stabilizes the temperature of the rims during the overpowering braking of the kz. The length of 96 mm offers a maximum lever arm on the rocket, ideal for literally planting the front ground train and get ultra-direct behavior in the sinuous.
Since 2011, the MAX radiator with cap has been an essential part of the cooling system for Rotax Max Evo 125 cm3 karting engines. This radiator is designed to ensure optimum heat dissipation, guaranteeing maximum performance and long engine life.
The piston with original band Rotax is an essential component for engines Rotaxdesigned to provide optimal performance and exceptional durability. This piston is suitable for multiple engine models Rotax, including the Rotax Micro max, Rotax Mini max, Rotax Junior, and Rotax Max (senior). Fabricated Rotax, a brand recognized for its quality and innovation in the karting world, this piston is ideal for demanding drivers looking for reliable and efficient solutions for their karting engines. In addition, Magickart offers this piston at a more competitive price than that of French and Italian competition, allowing you to benefit from the best quality at the best price.
The piston with original band Rotax is an essential component for engines Rotaxdesigned to provide optimal performance and exceptional durability. This piston is suitable for multiple engine models Rotax, including the Rotax Micro max, Rotax Mini max, Rotax Junior, and Rotax Max (senior). Fabricated Rotax, a brand recognized for its quality and innovation in the karting world, this piston is ideal for demanding drivers looking for reliable and efficient solutions for their karting engines. In addition, Magickart offers this piston at a more competitive price than that of French and Italian competition, allowing you to benefit from the best quality at the best price.
The CRG Kt2 is the versatile chassis par excellence of the Italian manufacturer. Unlike the Rébec Road (more rigid), the KT2 uses a frame compound full of tubes of 30 mm in diameter. This architecture offers controlled flexibility, ideal for freeing the engine in categories without gearbox like the OK, Iame X30 or the Rotax Max.
Its geometry allows fast adaptation to all track conditions (high grip or green track "). Featuring the last components of the range CRG RacingHe combines exceptional motor skills at a surgical front train accuracy.
The CRG KT2 2026 Version Kz redefines the standards of the Queen category. While the Road Rebel (32mm) remains the choice for the tracks with very high grip, the KT2 in 30mm Has become the favorite weapon of Kz pilots looking for more agility and ease in the support changes.
For 2026, CRG Reworked the composition of chrome-molybdenum steel to provide a better response from the front train during degressive braking. This KZ version stands out for its localized structural reinforcements and its integral front / rear braking system, essential to stop the power of 50 horsepower engines
The hub of 35 mm long is considered a "short hub". In karting, The choice of hub length is a fundamental adjustment tool:
Short hub (35 mm): It offers less contact surface with the axle than models of 75 or 90 mm. This usually allows to have a "freer" behavior of the rear train, Helping the chassis to be free from curve, Ideal on tracks with a lot of grip (adhesion).
The hub of 40 mm long is often considered the "standard" or "versatile" value on adult karts equipped with a 30 mm (x30, axle, Rotax, Kz, ok). Unlike very long (75-90mm) hubs that considerably rigidify the rear, or the very short (35mm) that fully freed the chassis, the 40 mm Offers neutral and healthy behavior, ideal for starting a setting session before refining.
The front hub CRG 40x80 mm (R2.0 range) in anodized finish Gold is a part of the original manufacturer (Original CRG Share), specifically developed to meet the extreme mechanical stresses of the Queen category chassis Kz (gearbox).
With his Inside diameter of 40 mm (adapted to the large diameter rockets specific to KZ) and its 80 mm lengthThis hub of the R2.0 series offers a perfect seat for your front train. In kz, the power of the front braking and the motor torque require absolute rigidity. This CNC machined aeronautical quality aluminum hub enciesive these lateral forces without flexing, ensuring a Surgical directional precision in full support. Its superb gold anodized finish protects the aluminum from corrosion while bringing the official "racing" look of the group's high-end chassis.
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