New
£499.00
Exclusive product, available for pre-order – production lead time 4-6 weeks.
Specifically designed to enhance the aerodynamic prowess and rear design of the revered G82 M4 & G22 4 Series.
Warranty
All ASM Sports Tech products come with a 8 month to lifetime warranty, unless otherwise stated in the product description. View the full warranty information here.
Shipping
Returns
At ASM Sports Tech We take great care in designing our returns policy to ensure that the process is hassle-free and convenient for you. If for any reason you are not 100% satisfied with your purchase you can return the goods for a full refund or exchange. Please visit our returns page and let us know within 30 days of your purchase
All of our products come with fitting kits where applicable.We highly recommend professional installations are completed by a professional to ensure the product is fitted correctly.
In-stock items will be dispatched same-day. If the item is out of stock or made to backorder, we will contact you within 24 hours and allow you to cancel or to process your order with a lead time of around 2-6 weeks.
Elevate your G82 M4 Coupe or G22 4 Series with ASM Design’s aggressive dry carbon fibre spoiler, engineered to enhance aerodynamics while delivering a show-stopping profile.
Designed by ASM Tuning using wind-tunnel testing, this spoiler reduces rear-end lift at high speeds without compromising on daily drivability.
Manufactured from genuine dry carbon fibre, it delivers a lightweight yet rigid structure that adds real aerodynamic efficiency. The spoiler is contoured to reduce drag and increase downforce at high speeds, making it more than just a styling piece – it’s a performance upgrade with purpose.



Tailored Fitment: Precision-designed for BMW M4 G82 and G22 4 Series (2021-2025), ensuring a perfect, OEM-quality fit with no modifications required.
Aerodynamic Precision: Increases downforce by up to 30%, improving rear-end stability and grip for dynamic driving, from city streets to high-speed circuits.
Ultra-Lightweight Build: Crafted from pre-preg dry carbon fibre, reducing weight by 45% compared to factory spoilers, enhancing agility and performance.
Sleek Motorsport Aesthetic: Sculpted with bold, aerodynamic lines and a high-gloss, UV-resistant finish, elevating your BMW’s visual impact.
Uncompromising Durability: Tested for resilience against extreme conditions, ensuring lasting performance and resistance to wear.
Hassle-Free Installation: Pre-drilled for straightforward, bolt-on mounting at professional tuning shops, with comprehensive instructions provided.
Authentic Designed and Engineered by ASM Tuning
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FAQ
If you have any questions, chances are you will find the answers below.
At ASM Sports Tech, we do offer various financing options, allowing you to choose the one that best suits your needs. These payment options, including AfterPay, are available at checkout, provided you meet the eligibility criteria.
In the United Kingdom, the pricing of our products includes a 20% VAT. For international customers, VAT is not included at the time of checkout.
This is because when your order is delivered to your country, your local government will impose import duties or taxes separately.
Absolutely! We offer shipping throughout worldwide, and shipping costs will be displayed at the checkout page.
For mainland UK deliveries, it usually takes between 2-5 working days from the moment we dispatch your order. International and UK Non-Mainland deliveries may take longer.
Modifications made to your vehicle may have an impact on the manufacturer warranty.
While ASM can offer advice, we cannot guarantee whether a product will or will not affect your vehicle warranty. It is strongly recommended to consult with your dealer and finance provider before purchasing and installing any parts. If you have any additional questions, please feel free to contact our team through the Live Chat or by sending an email to: support@asmsportstech.com
In the United Kingdom, the pricing of our products includes a 20% VAT.
For international customers, VAT is not instantly included. This is because when your order is delivered to your country, your local government will may impose import duties or taxes separately.
Absolutely! We offer shipping throughout worldwide, and shipping costs will be displayed at the checkout page.
For mainland UK deliveries, it usually takes between 2-5 working days from the moment we dispatch your order. International and UK Non-Mainland deliveries takes 7-10 working days.
While ASM Sports Tech can offer advice, we cannot guarantee whether a product will or will not affect your vehicle warranty.
It is strongly recommended to consult with your dealer and finance provider before purchasing and installing any parts.
If you have any additional questions, please feel free to contact our team through the Live Chat or by sending an email to: support@asmsportstech.com
TUNING GUIDES
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