The factory F10 M5 intake is not a sealed design: the front opening attaches to the front air ducts behind the grilles, while a second opening draws from the engine bay against the wheel-arch liner. That the engineers needed a second opening shows one is not enough to meet the engine's airflow demands, since the front intake has barely the cross-sectional area of the MAF. While efficient at keeping temperatures low, its angular shape, small volume and indirect airflow path leave performance on the table.
Infinity Design instead uses a smooth one-piece expanding inlet tube with an integrated MAF, attaching directly to the inlet tubes via silicone couplers. The expanding, large-volume tube acts like a big velocity stack that accelerates airflow far more effectively than the short stack inside the OEM intake, giving far smoother low-rpm torque, vastly improved drivability and immediately sharper throttle response. Front air-feed extensions force air fully into the front duct rather than letting it escape and cause turbulence.
High-Flow Air Filters & Intake Temperatures
The filter is almost completely encapsulated within its housing, rejecting the majority of hot engine-bay air, while the front inlet angle circulates cool outside air evenly around it. At 30 mph and above, inlet temperatures equal ambient under normal cruising; under full load they rise only 6°C / 10°F in hot conditions before levelling back to ambient, so the ECU does not pull timing as it would with a hot-air open intake.
Performance Testing
Dyno tests were performed under strict controlled conditions on a Dyno Dynamics machine, comparing the best stock run with the best run on the Infinity intake. 15–25 hp is gained through the rev range, with excellent gains below 3,000 rpm from the smooth, elongated inlet tube and the majority of improvement from 4,750–7,200 rpm where the OEM intake becomes restrictive. Infinity Design deliberately quotes realistic figures rather than the ~35–40 hp that could be shown by comparing lowest stock runs to highest modified runs.
Features
- +15–25 hp through the rev range (dyno-verified)
- 100% pre-preg carbon fibre construction
- No ECU tuning required
- Smooth one-piece expanding inlet tubes with integrated MAF
- Encapsulated filters with front air-feed extensions
- Faster turbo spool-up and improved throttle response
- Direct OEM fitment; gloss or matte carbon finish
What's in the Box
- 2 × Venturi Inlet Tubes
- 2 × Air Filter Housing / Inlet Ducts
- 2 × Bespoke Infinity Design Air Filters
- 2 × Black metal clamps
- 2 × Silicone Joiner with Clamps
SHIPPING
All items are subject to a handling period before they are dispatched. 99% of orders leave the warehouse within 1-3 days of payment. We will notify you by email when your items have been shipped. Most items should be received within 3-7 business days of your order date. This may be longer for international delivery.
* DELIVERY TIME= Processing Time + Shipping Time
* These shipping times are estimates, not guarantees but we always strive to get your order to you as soon as possible.
Shipping Costs:
● Shipping fees are calculated at checkout based on your location and the chosen shipping method.
Order Tracking:
● Once your order ships, you will receive a confirmation email with a tracking number and a link to monitor your shipment's status.
International Shipping:
● We ship internationally to selected countries. Rates and delivery times vary by destination.
Customs Fees and Import Duties:
● International orders may incur customs duties and taxes, which are the customer's responsibility. Please check with your local customs office for details.
Lost or Damaged Shipments:
● We are not liable for packages that are lost or damaged during shipping. For damaged items, please contact the shipping carrier to file a claim.
Customer Service Contact:
● For any questions regarding shipping, reach out to our customer service team at sales@sbxperformance.com
RETURN/REFUND POLICY
We have a 30-day return policy, which means you have 30 days of purchase your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
-Returns accepted within 30 days of purchase if the item is unused and in original packaging.
-Customer is responsible for return shipping unless the product is defective.
-Refunds processed within 5-7 business days after receiving the returned item.
To start a return, you can contact us at sales@sbxperformance.com.
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at sales@sbxperformance.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
We do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
European Union 14 day cooling off period
Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at sales@sbxperformance.com.
