What is a Centerbore?

What is a Centerbore?
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What is a Centerbore?

The centerbore of a wheel is the size of the machined hole on the back of the wheel that centers the wheel properly on the hub of the vehicle. Centerbores on wheels are typically a standard size in mm. Hub sizes vary by vehicle brand and UTV/ATV model.
UTV Tires Made in the USA Reading What is a Centerbore? 2 minutes Next Tire Pressure on Your UTV
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The centerbore (or commonly called hub-bore) of a wheel is the machined opening on the back of the wheel that centers the wheel properly on the hub of a vehicle. This hole is machined to exactly match the hub so the wheels are precisely positioned as the lug hardware is torqued down. Keeping the wheel precisely centered on the hub when it is mounted will minimize the chance of a vibration. Some wheels are vehicle model specific and will come from the factory with a bore machined to match that vehicle. Some wheels are designed to fit multiple vehicle models (like our Dual-Drill UTV Wheels) to maximize a single wheel with two bolt patterns, both 4x137 AND 4x156

Wheel Example Below: V01 15x7 4x156

 

Polaris is notorious for having the largest hub assembly in the powersports industry, and thus requiring a very large centerbore measurement. For comparison, the Polaris 4x156 bolt pattern requires a 132mm (5.20") centerbore, while a Honda 4x110 bolt pattern requires a 86mm (3.38") centerbore. In the image below, there are two highlighted sections for reference. The blue area is the cap and the pink area is the centerbore. The centerbore of a wheel is machined during the manfacturing per the bolt pattern requirements so each Valor Offroad wheel is specifically engineered to work for your make/model of UTV or ATV. 

utv wheel centerbore measurement

In the image below references a common larger hub assembly used on some Polaris Ranger, RZR, Sportsman models. As you can see on the pink highlighted area, this extremely tall hub needs plenty of room to fit within the rear of the wheel to ensure proper seating and fitment. The centerbore of each Valor Offroad wheel is meticulously machined out to accommodate the hub assembly shown in pink on image.
how to measure hub assembly on polaris rzr centerbore
Hub Assembly Polaris centerbore utv wheels

how to measure utv wheel centerbore


Valor centerbore specs:

Bolt Pattern Centerbore
4x110 86mm
4x137 112mm
4x156 132mm

Note: It is critical to torque the lug hardware with the vehicle on jack stands, off the ground. This allows the nuts or bolts to center the wheel and torque down without the weight of the vehicle pushing them off center.


View full valor offroad spec list here 

 

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Valor Offroad

Valor Offroad is a leading manufacturer of products developed exclusively for the powersports industry. Our wide collection of utv wheels, utv tires, and accessories are designed to enhance the performance and appearance of your offroad vehicle. Whether you're a seasoned offroader or just starting out, Valor Offroad has everything you need to take your powersports experience to the next level. Our utv wheels are crafted with precision and durability in mind, ensuring that they can handle even the toughest terrains. With a variety of styles and finishes to choose from, you can customize your offroad vehicle to reflect your personal style.

But it's not just about looks - our Valor utv tires are engineered to provide optimal traction and stability, giving you the confidence to conquer any trail. From trails to rock crawling, our tires are designed to withstand the harshest conditions, so you can push the limits of your offroad adventures.

At Valor Offroad, we understand that offroading is more than just a hobby - it's a lifestyle. That's why we are committed to providing top-quality products that not only perform well but also enhance the overall appearance of your offroad vehicle. With our extensive selection and dedication to customer satisfaction, you can trust us to be your go-to source for all your Polaris, Can-AM, Honda, and Kawasaki utv accessories.

So whether you're tackling the trails or hitting the dunes, choose Valor Offroad to equip your offroad vehicle with the best wheels, tires, and accessories on the market. Experience the difference that our products can make and elevate your offroading adventures to new heights.