The “compression bolt” product for the through nut (long type) is a product that has a steel ball and spring built into the aluminum bolt and is a product that is attached to the surplus screw part of the through nut that is actually installed (see the figure below). You can create an appearance that looks like you are wearing a super long hub bolt.
In addition, the tension of the spring improves the locking effect of the nut that is installed.

– This product “compression bolt” is exclusively for through nut (long type).
– Please install with the nut attached to the vehicle (retrofit).
– Use the included 6HEX, L-type wrench for installation.
– The tightening torque of this product “compression bolt” is up to 4N・m (0.4kgf・m) .
Applying more torque may damage the tip of the bolt and cause the spring to lose its elasticity.
– The nut engagement allowance (above) varies depending on the amount of protrusion of the hub bolt for each car manufacturer’s model.
Also, spacer installation and long hub bolts will change.
When installing, please check the total length of the nut and the allowance for screw engagement to calculate the amount of protrusion of the “comp bolt”.
– This product “compression bolt” requires an extra screw length of “8 mm or more” (above).
– Please do not use if it protrudes from the vehicle fender after installation.
– This product has a washer effect due to the elasticity of the coil spring, but it cannot completely prevent screws from loosening.
Regular tightening of the wheel nut body and this product is required.
– When removing the wheel, first remove the “comp bolt” and then remove the nut.