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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.
Holiday Opening Times
We would like to wish you a Happy New Year! Please note our adjusted opening times:
* 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.
2nd set of wheels and tyres purchased from Wheel Base. Excellent service, very professional would highly recommend
Margaret Leighton
Written: 15th January 2026
Very good and efficient service Thankyou
Adrian Grundy
Written: 15th January 2026
Very good and efficient service Thankyou
Adrian Grundy
Written: 15th January 2026
Brilliant from advice to delivery ! If you want new wheels look no further! Customer service was 10/10 will definitely be coming back when I want a change of alloys
Mani Rehman
Written: 15th January 2026
Excellent service would recommend them top quality wheels and tires
Anthony Spokes
Written: 15th January 2026
Ordered 19inch Fox Racing rims and Pirelli tyres from Wheelbase and the service was exceptional. Made a slight error on my part and they rectified it without any hassle and put my mind at ease. Amazing service, regular updates and love the wheels on my car. Cannot recommend them enough!
Faieq Miah
Written: 15th January 2026
Quite delay in delivery due to tyre choice & holidays, but otherwise all good! 🚚
Daniel Napora
Written: 15th January 2026
Quite delay in delivery due to tyre choice & holidays, but otherwise all good! 🚚
Daniel Napora
Written: 15th January 2026
Excellent service, really pleased with the new alloys and tyres they look amazing.
Paul Heard
Written: 15th January 2026
Due to my model of car, I was contacted as there may be a potential fitment problem. I spoke with your technical dept and suggestions were made to enable fitment. A very professional service that I have previously used and if needed will use again.
S Durbin
Written: 15th January 2026
Locking wheel nuts posted out to me very quickly once the error was noted. Arrived the next day, thank you
Deborah Griggs
Written: 15th January 2026
Excellent professional discussion with the guys. Sorted out best wheel/tyres to convert my X1 from 19" to 17" still keeping the run flats. Prompt assembly with the BMW valve sensors delivered in 2 days from order. Fitted no problem adjusted pressures and reset monitor. The Hankooks are excellent lower noise and much better on poor road surfaces. Just the job. John D. Barr
John Barr
Written: 15th January 2026
Very efficient. Great service all round. Huge amount of choice, but they helped me navigate through it and very happy with the results.
Jon Short
Written: 15th January 2026
Great quick service.
Stuart Hawkins
Written: 15th January 2026
Great quick service.
Stuart Hawkins
Written: 15th January 2026
Absolutely love the wheels. Definitely what I wanted.
Tiffany Parrott
Written: 15th January 2026
Great service got my wheels day early
Libby Crane
Written: 15th January 2026
Absolutely would recommend I want in store to discuss what I wanted from a set of wheels I was quickly given the options I got tires and delivered fast easy knowledgeable excellent prices service
Stephen Bennett
Written: 15th January 2026
Great wheels improved the look of the car nicely and fitment was perfect.
Joshua Staples
Written: 15th January 2026
Great service wheels arrived on time as promised
Kevin Smothers
Written: 15th January 2026
Nice wheels, very well organised apart from the delivery service, the company used never delivering the correct day and although thy claim a fantastic tracking system it does not work I would suggest a different courier
Paul Jordan
Written: 15th January 2026
A first class service, great communication throughout. Super fast delivery.
Stephen Summer
Written: 15th January 2026
There was a small problem with my delivery however customer service was 10/10. Very happy with my wheels and superb service.
Lee Timson
Written: 15th January 2026
Beautiful alloys and pretty fast order realisation. With order updates on the way you know what is going on and when to expect delivery. The only downside is the courier (not sure which one delivered) who drop it by the main door while nobody was home and thankfully I was back home for my lunch break to take the wheels inside. I don’t know who does it in this day and age risking expensive parcels to be stolen by someone passing by.
Damian Pabisiak
Written: 14th January 2026
Prompt delivery. It is too early to say how they perform but they look good and I don’t anticipate any problems.
Peter Southerden
Written: 14th January 2026
Great service and really fast delivery. As a repeat customer I highly recommend.
James Earl
Written: 14th January 2026
First rate customer service I ordered alloy wheels and they were excellent but I lost the spigot rings that came with the fitting kit ( the wife put them safe ) . Moving on the customer service Monika was very helpful and sent me new spigot rings within 2 days .That is what I call 5 star service Alan Francis
Alan Francis
Written: 14th January 2026
Fast Delivery, asked plenty of follow up questions to ensure perfection with the order, provided plenty of information to ensure the right wheels for your car, kept up to date with order tracking and delivery. Overall 10/10 service.
Graham John
Written: 14th January 2026
Happy with my purchase
Paul Cousins
Written: 14th January 2026
Excellent customer service, alloys exactly as described and brilliant value. Answered any questions in quick time and very professional. Would highly recommend
Jodie Edwards
Written: 14th January 2026
Great service, came on time very happy with quality and service throughout
Matthew Blake
Written: 14th January 2026
Extremely Pleased With My New Jap Racing Bronze Alloys.😊 Great Company To Deal With And Will Use Again In The Future.
Timothy Cramp
Written: 14th January 2026
1st class service from my first phone call to my last Email, my wheels arrived very well packed and looked amazing. Will be recommending to all my friends and family.
Mark Thompson
Written: 14th January 2026
Brill service love the wheels had may set from hear
John Smith
Written: 14th January 2026
Great reliable service and cost. Would recommend
Shaun Cornish
Written: 14th January 2026
Excellent, my 3rd set of wheels from wheelbase and yet again nailed it. Great customer service
Callum Parry
Written: 14th January 2026
Called and spoke with Stephen regarding alloy wheels & tyres, the advice & help he gave was really helpful, then after confirming the price & delivery date I decided to go ahead and purchase wheels & tyres delivered on time. Once again thanks to Stephen & would definitely recommend wheelbase
Steven Lawson
Written: 14th January 2026
Great products great customer service. Outstanding!
Roger Pool
Written: 12th January 2026
Good
Huseyin Kocek
Written: 12th January 2026
Great service thank you
Jimmy Flockhart
Written: 12th January 2026
Great communication all the way through and delivery was very prompt. Wheels and tyres are fantastic and look great on the car.
Dean Lawrence
Written: 12th January 2026
Thank you Good service
Ilona Herakova
Written: 12th January 2026
Really nice wheels, fast delivery and kept me up to date with emails throughout the process
Charlie Bell
Written: 12th January 2026
Fantastic service, daily @mails keeping me informed the wheels turned up got them fitted the same day. ********** 10 stars not 5 brilliant thanks again
Patrick Steele
Written: 12th January 2026
Wheels look great, good price and prompt delivery. I was kept informed of my delivery throughout. Cant ask for any more.
Mark Evans
Written: 12th January 2026
The service was excellent and made very easy. The wheels are brilliant and they came very quickly.
A J Wood Plumbing Andrew Wood
Written: 12th January 2026
Great service, excellent communication and everything turned up as described, very happy
Christopher Evans
Written: 12th January 2026
The best service. Very good communication. Absolutely the best product
Marcin Miszewski
Written: 12th January 2026
Great service. I ordered 4 x wheels/tyres. Ordering was easy and I got regular updates on the processing of the order and its delivery. Would highly recommend these guys :)
Tim Virdee
Written: 11th January 2026
Top quality service, ordered set of 4 alloys and all arrived within 2 days. Highly rec 🙏
Spencer Lucas
Written: 11th January 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.
