Brock B21 Matt Black Polished
18 Inch Set of 4 alloy wheels
Add precision and elegance to your car with the 18" Brock B21 in Matt Black Polished. Manufactured in Germany, this wheel is designed to deliver reliable performance and standout visual appeal with a flawless, factory-quality finish.
Whether you're upgrading your daily vehicle or enhancing a premium model, the B21 in Matt Black Polished offers the confidence of engineered quality and timeless design.
- Crafted in Germany with exacting standards
- Durable, corrosion-resistant Matt Black Polished finish
- TÜV approved for safety, strength, and road performance
- Lightweight design supports better ride quality and handling
- Suitable for a wide variety of vehicle types and driving conditions
The B21 is a smart upgrade that combines German manufacturing expertise with refined, everyday usability and long-term style.
If you have any questions at all, please call our expert team for Free from your Mobile on 0333 800 8000 or Free from your Landline on 0800 130 3400. Our lines are open 9am to 6pm (Monday to Friday) and 9am to 4pm (Saturday).
Add precision and elegance to your car with the 18" Brock B21 in Matt Black Polished. Manufactured in Germany, this wheel is designed to deliver reliable performance and standout visual appeal with a flawless, factory-quality finish.
Whether you're upgrading your daily vehicle or enhancing a premium model, the B21 in Matt Black Polished offers the confidence of engineered quality and timeless design.
- Crafted in Germany with exacting standards
- Durable, corrosion-resistant Matt Black Polished finish
- TÜV approved for safety, strength, and road performance
- Lightweight design supports better ride quality and handling
- Suitable for a wide variety of vehicle types and driving conditions
The B21 is a smart upgrade that combines German manufacturing expertise with refined, everyday usability and long-term style.
If you have any questions at all, please call our expert team on 0800 130 3400 Free from your Landline or Mobile. Our lines are open 9am to 6pm (Monday to Friday) and 9am to 4pm (Saturday).
| Brand: | Brock | |
| Model: | B21 | |
| Width: | {[{ wheelWidth }]} | |
| Diameter: | 18 Inch | |
| Bolt Pattern: | Best Fit Supplied | |
| Offset: | Best Fit Supplied | |
| Colour: | Matt Black Polished | |
| Style: | 10 Spoke |
Check Compatibility
Alloy Wheels Only
Set of 4 x 18" Brock B21 Matt Black Polished & Fitting Kit
All sets of wheels include four 18" Brock B21 Matt Black Polished and a free fitting kit. Every order is fitment checked and supplied with the correct fitting kit. When you receive your wheels, all you need to do is fit your tyres to the wheels then fix them to your vehicle with the fitting kit supplied.
Wheel & Tyre Packages
4 x 18" Brock B21 Matt Black Polished alloy wheels, fitted tyres & fitting kit
All packages include four 18" Brock B21 Matt Black Polished, 4 tyres and a free fitting kit. They are fully fitted and balanced to the highest standards. Every order is fitment checked and supplied with the correct fitting kit. When you receive your package, all you need to do is fix them to your vehicle with the fitting kit supplied.
- All Tyres professionally fitted to the Alloy Wheels
- All Wheels & Tyres are professionally inflated to the correct pressure
- All Wheels & Tyres are fully balanced with the latest balancing equipment
- All Wheels & Tyres are balanced with top quality Trax weights
- All Wheels & Tyres are packaged to the highest standard
- All Wheels & Tyres are fully insured during shipping
Delivery Information
We offer a full international delivery service
We Can Deliver Your Wheels Anywhere in the World
We deliver to all countries around the world using several different couriers to help keep our delivery prices as low as possible for our customers. Our international delivery is an express service, with most orders reaching their destination in a matter of days, making our service the best and most reliable in the country.
With over 20 years of experience supplying alloy wheels and tyres throughout Europe and around the world, you will be assured your order will be shipped securely and as quickly as possible. Our delivery service fully insures your order for peace of mind.
We offer an international delivery service using TNT, DPD, UPS, FedEx and many other world leading delivery companies. You can be assured that your goods will be handled with care.
- Packaged to the highest standard
- All wheels protected front and back
- Tightly shrink-wrapped and easy to open
- Handled with care
- Quality control checked
- Fully insured and trackable
Ordering 18 Inch Brock B21
Quick and easy ways to order your wheels and tyres
Online Checkout Via Credit or Debit Card
You can order online via credit or debit card 24 hours a day, 7 days a week. All online orders are fitment checked and verified before they are sent. We do not charge any surcharges for credit card payments.
Serious about security
Our SSL certificate has extended validation with 128-bit to 256-bit encryption. Your Address bar will display green in most new browsers for peace of mind.
Online Checkout Via PayPal
With our PayPal checkout integration, you can make PayPal payments quickly, easily and more securely - for free. PayPal makes buying from wheelbasealloys.com easy because you don't need to re-enter your debit or credit card details when you buy.
PayPal lets you pay in a few easy clicks. No hassle of getting out your wallet or typing your card details. All you need is your email address for quick, easy payment.
Telephone Via Credit or Debit Card
Our highly trained sales advisors are here to help. Available 6 days a week they can advise and help you find the wheels and tyres you want. Our dedicated sales team will double-check the alloy wheels are right for your car. Once you are ready to purchase our sales advisors can take all of your details and securely process your order.
Free: 0800 130 3400 Free: 0333 800 8000
International Bank Transfer
Ideal for international payments, if you do not have a credit card or PayPal account. To create a bank transfer, you'll need to submit instructions to your bank. Please contact us for our account information.
Call: 0044 161 628 0000 Email: support@wheelbasealloys.com
14 Day Money Back Guarantee
Money-back guarantee will only be accepted within 14 days of delivery.
Refund will be less the transport costs both ways.
Goods must be in perfect condition.
Refunds only returned to the original credit card used.
Refund Policy
Returns are accepted within 14 days for any unused items. To return the item please contact our customer services. You must return the item in the same condition it was received in. Please ensure that the item(s) are packaged to a suitable standard protecting all surfaces. Providing the purchase is cancelled within 14 days Wheelbase will pay the return postage costs.
Customer services: 0333 800 8000
Frequently Asked Questions
18" Brock B21 Matt Black Polished Alloy Wheels
Wheelbase is the UKs leading alloy wheels and tyre store. Over the years our customers have asked a variety of questions which we have answered below to help you understand a little more about Wheelbase and our alloy wheels and tyres website. If you need any further help or assistance please contact our team.
Our phone lines are open: 9am to 6pm (Monday - Friday) and 9am to 4pm (Saturday).
Have a Question?
Contact Us Via Email
Contact Us
Contacting us couldn't be simpler!
Wheelbase have a dedicated team willing and ready to take your enquiries. Our goal is to respond to you as fast as possible. During our opening times, the fastest way to contact us is via phone. We also have ‘Live Chat’ available, simply click the icon in the top navigation bar to get started. You can also visit our alloy wheels showroom in Manchester. We can deliver your alloy wheels and tyres anywhere in the world, please check our ‘Delivery Information page for further information.
Our phone lines are open: 9am to 6pm (Monday - Friday) and 9am to 4pm (Saturday).
Call Us For Free
Lines Open Now: Call Our Expert Team
Landline Free: 0800 130 3400
Mobile Free: 0333 800 8000
Visit Our Showroom
Wheelbase, Unit 1, Sun Building, Stockfield Road, Chadderton, Oldham OL9 9LU
We have a large showroom near Manchester, packed with all the latest wheels and tyres for your car. The site we operate from is over 2 acres with over 20,000 square feet of showroom, workshop and warehouse. Car parking is not a problem, we have over 40 spaces.
We offer free fitting on all alloy wheels and tyres when you visit our showroom.
You can buy alloy wheels online, or you can visit our showroom, and we'll help you pick the right alloy wheels and tyres for your car. We provide a free fitting service for all our showroom customers. Contact our team and book some time with one of our experts or simply turn up on the day, and we'll be happy to help. We have over 30,000 Alloy Wheels and Tyres under one roof.
Opening Times
Opening times and delivery estimates: Open 6 days a week
* Orders placed before 4pm will be dispatched same day subject to stock availability. If your stock needs to be ordered in, we will notify you via text and email shortly after placing your order with an updated delivery estimate.
Wheelbase Alloys Latest Reviews
Let everyone know how easy it was to buy our alloy wheels
We pride ourselves on excellent customer service and product knowledge, and thankfully our customers agree. If you have recently purchased a set of new alloy wheels from Wheelbase, please leave a review or email us your feedback.
Fantastic service with great communication. I had to order a replacement rim and Wheelbase made the whole process easy and stress free. Would recommend to anyone.
Thomas Buckley
Written: 19th September 2026
Good quality
Clare Satchwell
Written: 19th September 2026
Purchased Axxion X2 alloys for my Son's Corsa VXR. Wheels look great and excellent value. Service and communication from Wheelbase was good. Haven't fitted them to the car yet but all being well they will make the car look amazing!
Adam Dolan
Written: 19th September 2026
I've just purchased wheels and tyres Thay are stunning on my car Would highly recommend this company First class service
John Smith
Written: 19th September 2026
Very efficient service and very good value . Damion was a really good help great customer service.
Pamela Gibbons
Written: 19th September 2026
Great company to deal with, very friendly helpful staff, website easy to navigate to select the right wheel and tyre package for your car with no fitment issues. I would definitely recommend
Anthony Boswell
Written: 19th September 2026
Great wheels and look good on my motorhome. After a bit of a communication issue the guys at Wheelbase couldn't have been more helpful and quickly turned the order round to get my wheels to me as quickly as possible. They look great. Thank you.
Michael Foreman
Written: 19th September 2026
Love the wheels and tyre package I bought and they look amazing on my car. The guys at wheelbase were very helpfull and delivery was on time as promised. I recommend anyone looking for some new rims to check these guys out first. Amazing after care from them too. I will be buying more wheels and will only get them from wheelbase. Thanks again guys I appreciate all your help.
Daniel Price
Written: 19th September 2026
Excellent service. Needed a replacement alloy for one that got damaged. It was delivered very quickly considering it had to come from Italy!! Thanks again!!!
David Metcalf
Written: 19th September 2026
All good fit perfect looks nice
Marius Metrikis
Written: 19th September 2026
Got to my house within 2 days. Love it! Great customer service I would buy again from here.
Ethan Cavill
Written: 19th September 2026
Top quality product, 2nd time purchase and won’t be the last
Ryan Stone
Written: 19th September 2026
It’s not the first time bought alloys packages previously never had a problem amazing service always on time with efficient delivery Highly recommended and will definitely be buying in the future Thank you so much
Anjali Chawda
Written: 18th September 2026
⭐⭐⭐⭐⭐ Absolutely over the moon with my Bola B9s from Wheelbase Alloys. I went for the Crystal Silver 18x8J ET45 setup for my Subaru BRZ and they’ve completely transformed the look of the car. The finish and quality of the wheels are brilliant and they look even better in person than they did online. The whole process with Wheelbase was really straightforward. Communication was good, I was kept updated when the wheels were dispatched, and everything arrived safely and well packaged. Now they’re fitted, I genuinely couldn’t be happier with my choice. The fitment looks spot on and the B9 design suits the BRZ perfectly. I spent ages deciding which wheels to go for and I’m very glad I chose these. Would definitely recommend Wheelbase Alloys and Bola B9s to anyone looking to change the look of their car. 10/10 from me!
Archie Leigh-Gilchrist
Written: 18th September 2026
very helpful super quick service well packaged perfect
Terry Williams
Written: 18th September 2026
Great wheels at a great price, good communication throughout the ordering process and prompt delivery.
Malcolm Wayt
Written: 18th September 2026
This is the second set of alloys I’ve had from this company & from start to finish they gave always delivered, great customer service & a fantastic product. Thanks guys 👌
Stephen Reid
Written: 18th September 2026
Speedy delivery, alloys suitable for a VW Passat sizing. No issues so would use this company again
Canning
Written: 18th September 2026
Thank you for the opportunity to purchase from you via installment payments; I can highly recommend you to everyone
Pal Horváth
Written: 18th September 2026
Smooth easy ordering process. I ordered a complete set of alloys and tyres with pressure sensors. All were fitted, packaged and arrived in perfect condition before expected. Highly recommended.
Oliver Searle
Written: 16th September 2026
Super fast delivery & wheels well protected. Also really easy to use the website to order
Amy Hutchinson
Written: 16th September 2026
quick /easy excellent service keeps you informed every step of the way
Andy WAGON COACWORKS
Written: 16th September 2026
Fantastic service. Great wheels. Very happy, would recommend!!
Andrew Jones
Written: 16th September 2026
The wheels I originally selected were out of stock & took longer than expected to come from the manufacturer, but once I contacted the sales team at Wheelbase they were super-helpful & sorted out an available alternative. The new wheels & tyres are great, and great value. I’d recommend speaking to Wheelbase first rather than simply ordering online for the best service.
LESLEY TAYLOR
Written: 16th September 2026
Excellent process and good communication
David Gregg
Written: 16th September 2026
Excellent service and wheels arrived quickly and fit perfect would definitely recommend.
Glenn Faxon
Written: 16th September 2026
Great service, Quick delivery, easy to order and great communication,
Mark Lowe
Written: 16th September 2026
Awesome wheels
Dani Doland
Written: 16th September 2026
Great alloys and very good communication . Also fitting was prompt and professional.
Tamlan Saoudi
Written: 16th September 2026
Very good to deal with.
Tommy Cartwright
Written: 16th September 2026
Friendly fast reliable service would recommend to anyone who would like to purchase alloy wheels
John Musmeci
Written: 16th September 2026
The service and attention to detail provided by Wheelbase was excellent. I would recommend them to anyone. The wheels and tyres were very securely packaged and delivery was on time. I fitted the new wheels and they are perfect.
Sean Baker
Written: 16th September 2026
Very fast service with perfect fitment easy installation and provided me with all the needed bits. Highly recommend
Peter Shipley
Written: 16th September 2026
Great service
Kapil Bissonauth
Written: 16th September 2026
From making contact with Wheelbase, ordering and delivery was first class, all dealt with in record time. It took a few days to have wheels fitted as new tyres had to be sorted, job now done and look fantastic. Great company to deal with, would recommend every time. Dennis Morrow.
DENNIS MORROW
Written: 15th September 2026
Excellent service and great products
Dan Deluca
Written: 15th September 2026
I recently purchased a new set of alloy wheels from Wheelbase and couldn't be more impressed with the entire experience. From the initial enquiry through to delivery, the service was exceptional. The team was knowledgeable, helpful, and quick to answer my questions, helping me choose the perfect wheels for my vehicle. The ordering process was straightforward, communication was excellent throughout, and the wheels arrived promptly and in perfect condition. The quality of the alloys exceeded my expectations and have completely transformed the look of my car. I would highly recommend Wheelbase to anyone looking for quality wheels backed by first-class customer service. A genuinely hassle-free experience from start to finish. Thank you, Wheelbase! 👏🚗✨
Sharon Sibbald
Written: 15th September 2026
Excellent service. Great product. Would buy from wheelbase again..
John Sigsworth
Written: 15th September 2026
Although wheels have yet to arrive the help and responsiveness to various issues caused by me were all dealt with very responsively. Paul could not have been more patient.
Michael Phillips
Written: 15th September 2026
Absolutely love the product, and the service was amazing! 🙃
Lennox Bobb
Written: 15th September 2026
Absolutely brilliant! I’m very happy with the wheels I purchased. They look fantastic and even better in person. The quality is excellent, and the delivery was very fast. Thank you for the great service — I would definitely recommend you to others! ⭐⭐⭐⭐⭐
Martin Gazi
Written: 15th September 2026
The wheels are great quality, exactly as described, they were well packed and turned up quickly
Andrew Andrew
Written: 15th September 2026
Absolutely delighted with my order from Wheelbase Alloys. The wheels are excellent quality, look fantastic, and arrived quickly and very well packaged. The customer service was fantastic. After placing my original order, I decided to add an extra wheel, and the team made the whole process incredibly easy and helpful. Everything was handled quickly and professionally. A genuinely great buying experience from start to finish. I would definitely buy from Wheelbase Alloys again and highly recommend them. Five-star service!
Kestutis Macijauskas
Written: 15th September 2026
Really impressed with Wheelbase. The alloy wheel package was available at a great price, and the ordering process was straightforward and easy. Delivery was prompt, and the wheels were extremely well packaged and arrived in perfect condition. The service from start to finish was first-class. Would definitely recommend Wheelbase and wouldn’t hesitate to use them again.
Chris Green
Written: 15th September 2026
Really happy with the wheels and customer service is outstanding I would recommend Wheelbase to anyone considering purchasing new wheels
Anthony Roberts
Written: 15th September 2026
Daniel Munby is the best employee you have give the brother a pay rise he dealt with my bullshit of choosing 3 different wheels and still managed to get me them before the week ended. Top man will definitely be buying again because of him one of the best customer services i have ever received always happy and never sounded annoyed with how much i blagged him
William Bell
Written: 15th September 2026
What a fantastic looking set of quality alloy wheels, these wheels really finish off the look of my car.Not forgetting the first class service from start to finish from this company, keep up the good work.
Mark Louch
Written: 15th September 2026
hi not fitted wheels yet but they look amazing
ANDREW YEATES
Written: 15th September 2026
Great product Great communication from start to finish. I’m a returning customer who is yet to find any problems with Wheelbase 👍
Jez House
Written: 15th September 2026
Lovely set off wheels make the car pop
James Robinson
Written: 15th September 2026
These B21 alloy wheels are available in the following bolt pattern: 4x108 .
Wheelbase have built the most accurate fitment database in the wheel and tyre industry. We guarantee that the correct bolt pattern will be supplied for your vehicle with many checks being carried out to ensure an issue free buying experience.
These B21 alloy wheels are available in the following offset: .
Wheelbase have built the most accurate fitment database in the wheel and tyre industry. We guarantee that the correct offset will be supplied for your vehicle with many checks being carried out to ensure an issue free buying experience.
If you understand alloy wheel fitments please enter your required specification to the additional information section when you check out online. Alternatively, you can call our expert team on 0333 800 8000.
Add Accessories
Choose from our essential range of great value accessories
4x Locking Wheel Bolts/Nuts with Key
5 piece kit, comprises of 4 locking bolts/nuts (1 for each wheel) and a locking key. These are recommended to protect your purchase.
4x Chrome Sleeve Valves
Add the finishing touch to your new alloy wheels with Chrome Sleeved wheel valves and valve caps. Fits all alloy wheels. Comes in Pack form and contains 4 in a pack.
1x Bilt Hamber Auto-Wheel Cleaner
It is important to keep your alloy wheels clean in order to preserve their high quality finish - but using the wrong cleaner can give disastrous results. Choose our Waterless Wash and Shine to give a flawless finish.
