Official Guide of Hardens CRG - Length 1020 mm (immediate clarity)

Select the desired hardness from the drop-down menu according to the original specifications of the factory CRG :

💡 Technical note: The compact length of 1020 mm (Compared to 1040 mm versions) provides a narrower and more reactive backward rate, ideal for adjusting tracks on certain track conditions or category regulations. Marked versions (R) = reinforced have a thickness of tube range to 2.5 mm.

- Complete description of the product (H1: back shaft CRG Ø 50 mm Black - Length 1020 mm - Rear Train Setting)

Take control of your motor skills and affine the behavior of your kart thanks to theoriginal back tree CRG 50 mm diameter in length 1020 mm. With the iconic black protective finish of the Italian brand, this axis is the key element to calibrate the flexibility of your rear train depending on the track condition and the type of tires.

The length of 1020 mm offers an excellent geometric compromise: it allows to tighten the back path to release the chassis in fast sequences or meet the technical requirements of certain categories (OK, KZ, Rotax, X30). Available in the entire range of catalog hardships CRG, this tree goes from the very flexible version S20 (To avoid kart to cling on a too wrapped track) until the ultra-rigid version T5 or reinforced versions R (2.5 mm) to force the tire to find a grip on cold track, slippery or soggy.

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

* "Hi the trajectory strategists! A 50 mm tree in 1020 mm long, it's the secret weapon when you want a more 'direct' rear train than with a standard 1040 mm tree. By reducing cantilever cantilet. Wheels, you make the kart immediately more responsive to the steering !

My essential mechanical trick for this axis CRG 1020 mm: the trail of the false round and the calibration of the hubs !

When you receive your new black axis, handle it carefully. When mounting through your three rear bearings, make sure the axis turns by hand with absolute fluidity before tightening the bearings. If you feel a hard point, realign your chassis bearings !

Second small booth board: with a 1020 mm tree, your wheeled hubs will be stalled closer to the edge of the axis. Always think that your keys remain perfectly engaged in the original grooves of the black shaft, especially if you broaden the rear path to the maximum. A small marker line on the axis flush of the hub will save you to search for your landmarks between two series chrono! "*

- Replacement guide: step by step

- SEO FAQ (Frequently Asked Questions)

Q: Why choose a length of 1020 mm rather than a tree of 1040 mm ?

A: The tree of 1020 mm is slightly shorter than the standard version of 1040 mm. It allows to obtain narrower rearways without the axle dangerously exceeding inside the rims. In addition, having less cantilever in the end of the tree slightly rigidifies the hub support, which brings a more incisive and more direct backrest during rapid support changes.

Q: This tree 1020 mm of origin CRG is it adapted to the KZ karts with gearbox ?

A: Yes, perfectly. For categories KZ, we recommend that you focus on the declensons marked (R) = reinforced (like the S25, T1, T4 or M25 with a 2.5 mm wall thickness). This allows you to cash in massive torque transfers when changes in reports and avoid rebound phenomena (chattering) at the point of turn.

Q: Will the tree come with the keys and the wheels hubs ?

A: No, this article only includes the naked back shaft of diameter 50 mm black CRG in length 1020 mm (in the hardness selected from the drop-down menu). The keys, wheel hubs, crown holder and disk carrier must be retrieved on your old axis or controlled separately.