Discover the high-end rear wheel hub signed Birelart, Designed for demanding drivers looking to maximize their driving experience and refine the behavior of their chassis. Made in magnesium HQ (high quality), This hub with a length of 100 mm for 50 mm shaft is an essential technical part to optimize the rigidity of the rear gear and ensure perfect stability during acceleration phases and strong curve support.

The use of the HQ magnesium makes it possible to drastically reduce the masses not suspended from an aluminum model, providing a better thermal dissipation of the tires and a much more progressive behavior of the kart on the tracks at high level of GRIP. Its great features lies in its system to double clamping by reinforced flanges. This high-end mechanical device distributes the pressure force in a perfectly uniform manner on the 50 mm shaft, eliminating any risk of sliding of the hub along the axis, while avoiding marking or deforming the axle tube under the effort.

Technical characteristics:

• Material: Magnesium HQ (Ultra-light alloy with high thermal dissipation)

• Locking system: Mechanical double tightening for enhanced safety and optimal stability

• Diameter of the tree (axle): 50 mm

• Total length: 100 mm

• Distance from wheel studs: Standard International (3x58 mm)

• Origin: Original product certified Birelart (Original Birel GENUINE PARTS)

👨🔧 - The trick in Michel (the corner of the expert)

* "Hi the Ace of the setting! Choose a 100 mm double-tightened magnesium hub from Birelart, it is an excellent technical decision. In karting, magnesium acts as a vibration damper compared to the aluminum: it allows for Release the rear yard when the track is very eager, avoiding kart does not" jump "or can not overlook through the bitumen.

My obligatory trick for mounting these small magnesium jewelry: the threading and cleanliness of the tree !

First thing: magnesium is an elite material but it is more tender than steel. Never use shock wrench (striper) to screw the two clamping screws on the axle, you may fail the hub filter permanently. Always work by hand with a quality BTR key.

Second booth tips: Before sliding the hub on your 50 mm axle, pass a very fine emery fabric shot or steel wool on the shaft to remove rust micro-traces and old dry grease. The hub must slide freely, without forcing. At the time of clamping, insert your key, position the hub to the desired channel width, and screw the two clamping screws so progressive and alternated (A little left screw, a little right screw) to balance the flange. A uniform tightening by hand is the assurance of a rigid rear train that will not move a millimeter from the whole finale! "*

📐 - The Track & Setting Guide: Step by Step

❓ - FAQ SEO (Frequently Asked Questions)

Q: Is this rear hub sold complete with the studs to fix the rim ?

A: Yes, absolutely. This birelart original hub is delivered complete, equipped with its three wheel studs as well as two high-strength steel screws for the double-tightening system on the axle. It is ready to be placed on your machine.

Q: Why choose a length of 100 mm rather than a shorter hub of 75 mm ?

A: In karting, the length of the hub acts as a stiffener for the back shaft. A 100 mm hub covers a larger area of the 50 mm axis, a 75 mm model, which brings greater rigidity to the rear gear. This is the ideal configuration for more side grip and stabilize kart in fast curves.

Q: Is this Birelart magnesium hub compatible with other brands (OTK, , CRG, Sodi ...) ?

A: As long as your kart is equipped with a back tree of an outside diameter of 50 mm and that your rims use the standard distance of 3x58 mm (Which is the case of almost all the major modern Karting brands), this hub can be technically installed on your chassis. However, it has been developed specifically to agree with the flexibility and dynamics of the original tubes of the Birelart group.