Project Description

Audi A5

BONOSS Forged Grade 12.9 Shell Type Lock Bolt Kits

Audi-A5-install-BONOSS-Forged-Grade-12.9 Shell Type Lock Bolt Kits (8)

Guess what? Still Audi!We have a group of Audi fans.

An Audi A5 customer sent us the feedback on installing the BONOSS Shell Type Lock Bolt Kits:

The owner of the Audi A5 installed BONOSS Forged Grade 12.9 Shell Type Lock Bolt Kits. Front 28mm (1.1 inches), rear 28mm (1.1 inches), PCD 5×112, CB 66.5, (RAYS Wheels) Conical Seat Bolts 14×1.5. The professional garage installed them and took some photos for us. Here are images of the car’s appearance after installation. Let’s have a look at them.

What does Shell Type Lock Bolt Kit do?

The product is named by BONOSS and this latest product is welcomed by many customers, short type and long type can be selected by customers, the product upgrades the appearance of bolt, match the bolt with a shell, that is the reason why BONOSS name it shells type. The shell has two functions. First, protect the wheel bolts from debris and water corrosion, extend the service life of wheel bolts. On the other hand, the trend of modding our unique cars is a part of car culture. We hope every car is special for every driver, even the detail of a piece of the bolt.(The images originate from IS garage)


Next, we will talk about this Audi A5.

Audi A5 achieves the targets of a luxury car and a respectable amount of performance. Coupe, convertible, and four-door hatchback body styles still available for customers. Shell type Lock Bolt Kits for B8 Audi A5 are a popular choice for Audi owners who are interested in keeping things as close to OEM as possible while also giving the car a more attractive aesthetic. Many customers install the proper thickness of wheel spacers to enhances the aesthetics of the car by eliminating the unsightly wheel gap.

The customer who wants to mod the car can start from wheel bolts and external wheel parts, for example, buy new wheels and wheel bolts, install them safely. That is the reason why you bought an Audi for yourself.

This Audi S5 B9 mods:BONOSS Forged Grade 12.9 Shell Type Lock Bolt Kits, RAYS Wheels, HOFMANN Power Weight…..

(Pay attention: the reason why the customer chooses conical seat bolts is changing the wheels, the bolts seat type should match the wheel seat type.)

Audi-A5-install-BONOSS-Forged-Grade-12.9 Shell Type Lock Bolt Kits (10).

BONOSS Shell Type Lock Bolt Kits = Grade 12.9 Bolt + Forged 7075-T6 Shell

The product adopts SCM440 material as the material of bolt. It is a commonly used steel grade for the production of high-strength fasteners. The product has the advantages of stable composition, low harmful elements, high steel purity, small decarburization layer, and few surface defects. The heat treatment quality is stable and the hardness is uniform. The ball and conical seat bolts can be selected according to the stock bolt seat. In addition, different lengths also can be selected (25-75mm) in case of installing the wheel spacers. The shell is made of 7075-T6 material, 8 colors can be selected.


We are proud that the product pass TUV, SGS standard, TUV, and SGS actual test report performance parameters are as follows: (Tested by authoritative third-party SGS TUV certification)
Tensile Strength ≥ 1220MPa
Ultimate Tensile Load ≥ 152000N
Proof Load ≥ 121000N
Limited  Life Range Test ≥ 2000000 Stress Cycles Without Damage
Neutral Salt Spray Test ≥ 192H
BONOSS focuses on the best quality for every customer.

Additional Information:

  • BONOSS Forged 12.9 Grade Shell Type Lock Bolt Kits colors can be customized flexibly. Thus, if you would like different colors of shell type lock bolt kits, feel free to contact us. The data of  Audi A5 are PCD 5×112, CB 66.5, (RAYS wheel) conical seat bolts M14x1.5.
  • The extended bolts are shell structure design, which effectively protects the bolts from rusting. This Audi A5 uses (RAYS wheels) conical seat bolts. If you would like a set of shell type lock bolt kit, please ensure the seat type of the bolts is suitable for threading tightly. And, if you don’t know the proper length, you are welcomed to contact our tech staff freely.
  • Each BONOSS product is printed with the logo of “BONOSS”. This offers an easy method to distinguish other fake and inferior products. At the same time, it also provides a way to find our after-sales service. Our products are 10 Years Limited Warranty (new products with 12 months warranty), which is an excellent and cost-effective choice for your car upgrades.

Interested in purchasing? Click HERE to know more!