The simple answer is the material used for the body of the spacers. Our BORA brand is machined from US made forged billet 6061-T6 aluminum. Our Stahl Steel brand is made from billet 1045 steel. Both products carry our lifetime warranty, and are made in house.

Choosing the proper design type for your application boils down to the combination of a few factors. One being the thickness of the spacers you desire to run. Another being the type of attachment hardware the host vehicle is equipped with (I.E. lug nuts & studs vs lug bolts). The height of the vehicle's hub can also come into play, as well as a few other factors. If you are confused about which design type will suit your needs please view our design comparison page, inquire with us directly by phone at (775) 351-1000, or by email at info@motorsport-tech.com.

Lead times can vary across all product lines due to the size of the spacers ordered, material type, and part complexity. But a good general rule of thumb is 2-4 weeks for aluminum parts, and 4-8 weeks for steel parts. However, we are capable of building rush orders within hours to get customers out of a jam. If you need to place a rush order please call our office directly at (775) 351-1000.

The short answer is yes. However, the degrees of improvement will vary depending on the thickness of the spacer, and the application. If you are putting on 3mm Design 1 spacers to clear an aftermarket wheel, you likely won’t notice any improvements. However If you are adding 3” spacers to a tractor, you are going to see a large reduction in the tippiness and center of gravity of the vehicle. Greatly reducing the probability of roll over accidents, and improving the machines handling and stability.

Whether or not you will need to cut or grind your OEM studs will depend on a variety of factors, in some cases you may need to modify them, in many others you will not. We would first suggest measuring the length of your factory studs, and ensure that they do not protrude past the thickness of the bolt-on spacer you plan to order/possess. If your studs protrude past the face of the spacer, you will then need to check if the backside mounting pad of the wheel has lightning pockets/indents/recesses deep enough to accommodate the remaining length of stud without the stud touching the backside of the wheel in any way. If the wheel has no pockets, or the pockets are not deep enough, you will need to cut your studs.

It is imperative that you ensure that nothing prevents the spacers from sitting flush against the hub, or wheels from sitting flush against the face of the spacer. Failure to do so will result in your wheel working loose and may result in injury. It is solely the responsibility of the installer to ensure that all parts are installed correctly.

Yes, all hardware needed to install your spacers or adapters to your vehicle will be included in the box with all bolt-on applications.

However, Design 1 and 2 slip-on spacers may require the purchase of additional hardware, such as extended studs, lug bolts, or ET lug nuts for proper installation.

We also sell hardware to attach your wheels should you need it.

If you are at all confused about whether or not you need additional hardware, or need to purchase hardware to attach your wheels, please contact us by phone at (775) 351-1000 or by email at info@motorsport-tech.com.

These coatings offer protection from the elements, and sometimes a better cosmetic look for the application needed.

While not strictly necessary, anodizing our aluminum spacers will help prevent rust from forming on the face of the hub between the spacer. As well as hardening the surface of the material slightly.

The black or gold zinc coatings offered for our Stahl Steel line of spacers and adapters will help prevent the raw material from rusting, as steel is much more susceptible to the elements. As well as add a professional look to the parts.

Yes we do! For an additional fee we can anodize aluminum spacers in a variety of colors other than black. This is usually a minimum lot charge of $75.

We also offer black and gold zinc oxide coating for our steel parts starting at $75 for the minimum lot charge. We can also paint your steel adapters to match team green or team orange at your request, pricing on painting varies.

For any custom finish inquiries please call our office directly at 775-351-1000 or email us at info@motorsport-tech.com

If you wish to become a dealer or reseller of our products you can submit a web form online here. Or call us at (775) 351-1000.

You will need a calibrated torque wrench to properly install your spacers. In certain cases where your studs must be modified, you will need an angle grinder or similar cutting tool to cut the studs down. 

You may remove your lug nuts/bolts with power or air tools. However it is imperative that you do not install your spacers or wheels with power or air tools, as you can damage the mounting surface of both the spacers and the wheels, as well as stretch or break your studs. Your spacers MUST be installed with hand tools only, or you may void your warranty.

Motorsport-Tech offers a limited lifetime warranty on all of its products. Guaranteeing them free from manufacturer defects in material or workmanship. In the event that a defect in material or workmanship occurs in any product that we sell, we will repair or replace, at our option, that product, free of charge, including shipping one way, for the lifetime of the product.

Please visit our warranty page for full details on our lifetime warranty, and instruction on how to obtain warranty service.

We offer both material options for any vehicle, and encourage our customers to decide what is best for them. 

In most cases our BORA aluminum adapters will meet or exceed your requirements. BORA spacers are load rated for more weight than your wheels are, and we have never had one fail when properly installed. It's important to note that our BORA wheel spacers will never rust and are protected even further when anodized black.

Our steel spacers are even stronger and can handle the most extreme conditions, usually heavy duty dually trucks or large sized tractors. If you want the toughest spacers bar none, these are the spacers for you. Just like our legendary BORA line we have never had a Stahl Steel spacer fail when properly installed.

Both products offer a great value, are made in the USA, and have a lifetime warranty! Now armed with this information it's up to you to decide what material fits your application the best!

Yes! We make dually conversion kits nearly every day. We can help you convert your single rear wheel truck to a dual rear wheel setup, or even convert your older dually truck to a newer, larger dual pattern. Inquire with us directly by phone at (775) 351-1000, or by email at info@motorsport-tech.com.

While Design 5 allows you to use your factory lug bolts to attach your wheels to your spacer, Design 3-4 have knurled studs pressed in instead. Allowing the use of lug nuts instead of lug bolts to attach the wheel to the spacer. 

One benefit of using a D3-4 spacer to convert your vehicle to use studs, is that you will have an easier time installing and aligning your wheel onto studs than trying to line up bolt holes.

Wheel studs are also easily replaced, should either you or an installer accidentally cross thread or damage a stud, the stud can simply be replaced with a hydraulic press or hand tools, a quick and easy process. If a tapped hole on a D5 is damaged, the repair process can be much more intense and costly.

Both the BORA and Stahl Steel spacers can withstand any punishment that you or your machine can dish out. The spacers only have one difference, the material. Our BORA spacers are made from high quality US made 6061-T6 aluminum, which is lightweight and impervious to rust. Our Stahl Steel spacers are made from 1045 cold rolled steel, which is almost 3 times as heavy as aluminum (This is actually very helpful for your tractor, as it helps keep the center of gravity lower) and is also stronger. However, our steel spacers are uncoated, and are prone to rusting. If you live or operate in an area where rust is a concern we recommend you paint your steel spacers, or we can have your order zinc plated to protect from rust for an additional fee.

Both products offer a great value, are made in the USA, and have a lifetime warranty! Now armed with this information it's up to you to decide what material fits your application the best!

Most of the time a 1.5 inch thick spacer is more than adequate to clear tire chains. But we recommend you measure the thickness of your chains prior to ordering to ensure you get a proper fit the first time.

Most of the time, a mid mount mower will limit you from putting spacers any thicker than 1.5” thick on the rear axle of your tractor, and prevent you from putting spacers on the front axle at all. However, this is not always the case. We recommend that you measure from your tire to the castor wheels on the mower deck to ensure your fitment. Some mower decks do not interfere at all!

If you have a mid mount mower, and need thick wheel spacers for stability, you can cut and relocate your castor wheels farther out on the mower to allow you much more clearance. 

Most of the time, a bucket loader will not interfere with the installation of wheel spacers on the front axle of your tractor, however we also strongly encourage you to measure out from your tire to the loader arms to ensure that you will not rub with spacers installed. Some models can have interference issues when installing spacers over 4” thick.

We recommend 3 to 4 inch thick spacers on the front and rear of your tractor if you are looking to add stability, and reduce your risk of rollover. 

However, we can manufacture spacers all the way up to 6” thick should you want the maximum amount of stability available!

Hub rings are used to center an aftermarket wheel with a larger than factory center bore diameter. Most aftermarket wheels have a larger opening that your OEM wheels, to allow them to be used on a wide variety of vehicles.

The use of hub centric rings will fill the space between the vehicle's hub and the aftermarket wheel. Allowing the hub to center both the ring, and then the wheel. This eliminates felt vibration and creates a much better feel while operating the vehicle.

Plastic hub rings will work in a pinch, but are not an ideal long term solution. As time goes on plastic hub rings will quickly wear down and deteriorate due to heat, and friction from being removed and reinstalled. Over time losing their ability to properly center your wheels, and potentially cracking or falling apart.

Hub rings made from billet aluminum will stand the test of time, and give you confidence while driving!