BGM PRO Item number: BGM7981VB5
BGM PRO

Advantages of BGM PRO cap nut set for tubeless rims

Suitable cap nut set for BGM PRO tubeless rims with M8 stud bolts
Five high-strength M8 x 1.25 nuts (strength class 10.9) including Schnorr washers
Collar Ø14 mm for even surface pressure on the rim
SW 12 and overall height 16.5 mm - suitable for standard wheel nut spanners
Schnorr washers prevent loosening even with strong vibrations
Black surface for a discreet look and corrosion protection
11,90 €*
available immediately
Shipping weight 0,064 kg

Cap nut set -BGM PRO- M8 for tubeless rims (5-piece)

This BGM PRO cap nut set is the perfect fastening solution for Vespa tubeless rims with M8 stud bolts. Five high-strength cap nuts including Schnorr washers ensure a secure wheel connection and also protect the thread ends from dirt and damage. Ideal for anyone who wants to mount their BGM PRO tubeless rims in a technically coherent and visually unobtrusive way.

For BGM PRO tubeless rims M8 x 1.25, 10.9 Incl. Schnorr washers Black version

Design and area of application

The cap nuts are specially designed to meet the requirements of Vespa tubeless rims. Thanks to the integrated collar, the contact pressure is distributed over a larger area than with a conventional hexagon nut. Together with the Schnorr washers supplied, this results in a very dimensionally stable connection that remains reliable even at high speeds and strong vibrations.

Suitable for BGM PRO tubeless rims and other applications with M8 stud bolts and sufficient space for cap nuts.
The closed design protects the stud bolt ends from corrosion, dirt and damage when changing wheels.
The black surface blends discreetly into classic and modern Vespa setups without distracting from the rims or brakes.

Technical data

ThreadM8 x 1.25 mm
Strength class10.9
Width across flatsSW 12 mm
collar diameter14 mm
Height of the nutapprox. 16.5 mm
VersionCap nut with collar, black
Inserts5 Schnorr washers
ApplicationWheel mounting on tubeless rims

Fitting instructions

For mounting, the tubeless rim is placed on the wheel mount as usual, then the Schnorr washers and the cap nuts are mounted on the stud bolts. The nuts are tightened evenly crosswise until the tightening torque specified by the rim or vehicle manufacturer is reached.

Clean the rim contact surfaces before fitting and check for damage.
Fit Schnorr washers with the toothing on the nut side or according to the manufacturer's recommendation.
After the first few kilometers, check the nuts for tightness and retighten if necessary.

Scope of delivery

  • 5 x BGM PRO cap nuts M8 x 1.25 with collar (black)
  • 5 x Schnorr washers to secure the wheel fastening

FAQ: BGM PRO cap nut set tubeless rims

Frequently asked questions

Is the set only suitable for BGM PRO tubeless rims?
The set is designed for BGM PRO tubeless rims with M8 stud bolts. It can also be used on other rims with identical dimensions, as long as there is space for cap nuts with a height of 16.5 mm and a collar of 14 mm.
Why are Schnorr washers supplied?
Schnorr washers increase the friction under the nut due to their special toothing and thus help to prevent the connection from loosening under vibration. This is a clear advantage, especially for Vespa engines with higher power.
Can I tighten the nuts with a normal wheel wrench or socket wrench?
Yes. The wrench size of 12 mm means that standard nuts and wrenches will fit. It is important to adhere to the recommended tightening torque and to tighten the nuts evenly crosswise.
How often should the nuts be checked for tightness?
After the initial installation, we recommend checking them after a few kilometers of driving. After that, the usual maintenance intervals are sufficient, for example when changing tires or during regular check-ups.
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OEM numbers (for comparison purposes only)
Scooter Center:
BGM7981VB5
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