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Terms and Conditions

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We endeavour to dispatch all items within 1 working day of order. Stocked items are usually dispatched on the same day if the order is made before 2pm.
We will not be held liable for any shipping costs, labour charges or consequential losses incurred due to delayed items. If an item is urgent, please contact us before placing the order to check stock and dispatch time.


We are export specialists, so can assist in shipping items anywhere in the world. There are restrictions on some products to specific locations, and some products cannot be shipped to international destinations at all. It is the buyer’s responsibility to ensure that any item purchased can be legally imported into that country.

When you place an order, our shopping cart system will estimate shipping costs based on the weight (or volumetric weight for overseas shipping) of the item and your location. As this is not a comprehensive system, we reserve the right to request further payment if the quoted postage costs do not meet the actual costs. As well as this, if you find that a quoted shipping cost is excessive, please feel free to contact us before completing your purchase for an accurate quote.

The Shipping and Taxes estimate DOES NOT include any Import Tax, VAT or Duties you may be liable to pay upon import into your country. It is the buyers responsibility to pay these charges upon import and to adequately research such charges BEFORE purchasing any items. If import duties are not paid, the item may be returned back to us. The initial shipping costs and any extra charges we incur as a result of this will be deducted from any refund made to you.

Before emailing for a shipping quotation, please add the item to your cart, click 'Estimate Shipping & Tax' under the Subtotal, input your address details and click 'Estimate Shipping & Tax'. This will give you your shipping options. Depending on the size and weight of the package and your location, here are the options:

Service Time Company
 Royal Mail Tracked (UK) 48 - 72hrs royal-mail.jpg
Royal Mail Special Delivery (UK) *Next Day before 1PM royal-mail.jpg
UPS (24hr) (UK) Next Working Day (Monday - Friday) ups.jpg
UPS (Pre 12) (UK) Next Day before 12PM ups.jpg

DHL (24hr) (UK)

Next Working Day (Monday - Friday) dhl.jpg
DHL Express (Europe) 24 - 48hrs dhl.jpg
DHL Express (Rest of World) 48 - 72hrs dhl.jpg
UPS Road Courier (Europe)  2 - 7 Days ups.jpg
Royal Mail Airmail (Europe) 5 - 10 Days royal-mail.jpg
Royal Mail Airmail (Rest of World) 10 - 25 Days  royal-mail.jpg

As stated above, for urgent orders please contact us to ensure we have stock and can dispatch. The cut off time for same day dispatch is 2pm Monday - Friday we do not dispatch any orders on Saturday or Sunday.

Royal Mail Tracked time scales are estimates only, and not guaranteed.

  • Royal Mail 24™ – RM aim to deliver your parcels the next working day.
  • Royal Mail 48™ – RM aim to deliver your parcels within two working days, with a small minority within 3 working days.
Royal Mail Special Delivery Guaranteed before 1PM Exceptions:
No delivery by 9am to the following postcode areas:
BD23 - 24
BT35, 44, 47, 51, 53, 54, 70, 71, 76, 77, 81, 92,93, 94
DG9 (7&9)
GY1 (Guernsey), GY2 - 8
IM2 - 9
IV2 - 20, 30 - 32, 36, 63
LA18, 20
LD1 - 4, 6
LN4 - 6, 10
PA20 - 27
PL29 (3)
PO30 - 41
TR12, 13, 17 - 26
YO41, 43, 51, 60, 61, 62
Deliver By 5.30pm the next working day in the following postcode areas:
AB30 - 39, 41 - 45, 51 - 56
GY9 Alderney (Channel Islands)
HS1, 3 - 9
IV21 - 28, 40 - 49, 51 - 56
KA27, 28
KW1 - 3, 5 - 15
KW16 Stromness Town only
PA20 (0&9)
PA28 - 38, 41 - 49, 76, 77
PH15, 17 - 26, 31 - 40, 49, 50
Within two working days by 5.30pm to the following postcodes areas:
GY1 Herm (Channel Islands)
GY9 Sark (Channel Islands)
PA60 - 75, 78
ZE2, 3
Within three working days by 5.30pm to the following postcode areas:
KW16 - non Town
PH30, 41 - 44


Here is a list of websites where you can Track & Trace your order, depending on which service it was sent with:


We do not trade with, or ship items to the following countries:

Cote d'Ivoire (Ivory Coast)
Democratic Republic of Congo
Ivory Coast
Lebanon and Syria
North Korea (Democratic People’s Republic of Korea)
Republic of Guinea

For any questions or clarification regarding these terms please Contact Us.

Payment Terms

All customers must pay for their parts / invoices in full prior to removing property or vehicles from our premises, It is our right to withhold keys until payment is made in full.
We do not offer credit terms under any circumstances.
All goods remain the property of Darkside Developments until paid for in full.

Returns Policy

Please read the below terms and conditions before opening a returns request.
To open a returns request please follow the steps in this link - https://www.darksidedevelopments.co.uk/how-to-open-a-return/

We hope you will be delighted with your product purchased online from www.darksidedevelopments.co.uk, however we understand that sometimes you may wish to return your product. Please find below details of our returns policy:

  1. You may return your product within 14 days by simply logging into your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We reserve the right to charge up to a 10% restocking fee to cover card fees, time and packing costs.
  2. Custom made or special order items can only be returned for a full refund if faulty. If they are returned for any other reason, they will be subject to a 25% restocking fee.
  3. All Darkside Developments branded products are considered 'custom made' and therefore cannot be returned under the distance selling regulations.
  4. Regardless of the return reason, the buyer is responsible for return postage. On unwanted items, the buyer is also responsible for the initial postage cost. If postage costs are agreed to be covered by Darkside developments the maximum value paid will be equal to the initial shipping cost on the order.
  5. We will notify you via email of your refund once we've received and processed the returned item. Unwanted items must be unused and in the condition they were sent. We may also charge a restocking fee. This is to prevent customers from ordering parts 'just in case' they need them. If products are not unused or in good condition, we reserve the right to withhold all or part of the refund payment. This does not affect your statutory rights.
  6. Upon receipt of the product we will check the content to ensure all parts have been returned and if so, we will authorise a credit to the account used to make the purchase. We aim to credit your account within 10 days of the product return.
  7. Where a part is missing we will contact you and advise of the charge for any missing element. We will then credit your account minus the charge. You may return the missing part however the cost of postage will be at your expense.
  8. If the product has been misused or not assembled in the proper manner, we reserve the right to withhold all or part of the refund payment. This does not affect your statutory rights.

Your rights under the Distance Selling Regulations are not affected by this returns policy.

Faulty or Incorrect part received

If you receive a part that is incorrect, faulty or not fit for purpose we reserve the right to take a deposit payment prior to sending out any replacement parts. The deposit will be refunded in full upon return of the incorrect, faulty or not fit for purpose part.

Alternatively the incorrect, faulty or not fit for purpose part can be collected by our courier. Failed collections will be charged at £10 + VAT. 

Darkside Developments will not be liable for any consequential losses due to any faulty or incorrect parts received.

Warranty and Claims

All Genuine and OEM Parts carry a minimum of 1 Year Warranty (2 Years in some cases) when fitted in a standard car. With most manufacturers, any performance enhancing modifications will void the warranty on those parts.
For any aftermarket / upgrade parts the warranty lies with the manufacturer and in most cases there is no warranty other than for manufacturing defects.
In all warranty cases, the manufacturer and Darkside Developments are not liable for any labour cost claims.

In the event of a warranty claim, we will require the item to inspect or to send to the manufacturer to follow their claims procedure. If you require a replacement item to ensure your vehicle is not off the road for a prolonged period, we reserve the right to charge for the replacement item. Upon a successful claim, this charge would be refunded. If the claim is not upheld, we will return your items to you in the condition they were sent and no refund will be made.

Please Note - All Dual Mass Flywheels have no warranty when fitted to modified vehicles. This includes kits fitted with the Sachs Race Clutch Kits.

Warranty Exclusions,

Damage caused by your failure to take all reasonable steps to prevent mechanical damage from occurring, for example, taking appropriate action in the event of warning lights appearing.
Damage or defects caused by not having the vehicle serviced in accordance with the manufacturer's / Darkside Developments recommendations.
Damage or defects caused by improper use of the vehicle, neglect, or use of the vehicle for motorsport activities.
Accident damage.


We reserve the right to request a deposit at the time of booking an appointment in our workshop or for special order parts. This deposit is non-refundable unless we cancel your appointment or order. If you do not or cannot attend an appointment, please do not ask us to refund the deposit paid. In some circumstances we may allow you to change your appointment to a more suitable date, but will require at least 2 weeks notice to do this.

Any tuning work will require a £100 +VAT (Non Refundable) Deposit. This deposit is to secure an arranged date in our diary and is NOT a deposit for the work to be carried out.

Vehicle drop off – Workshop / Tuning

  1. We retain the right to refuse any work if vehicles are not in a road worthy condition. E.g. Bald Tyres, Expired Road Tax etc. with the loss of any deposits paid.
  2. Cars that are not in a fit state for tuning work will also be refused, it is expected that a car is in perfect health before any power increase. Any deposit will be lost in this instance.
  3. Customers should notify Darkside Developments prior to the booking date if there are concerns regarding the cars health, we can then have the correct staff and parts ready to repair prior to working on the vehicle.
  4. All vehicles booked in for tuning jobs need to be with us 8:00am. We also request that the customer waits on site until we have done all our checks before they go (Up to 1 Hour). This is to save inconvenience and addition travel if we deem the vehicle to be untuneable or refuse to work on it.
  5. Customers that have not arrived on time must accept that collection of the vehicle may be delayed, and must have arrangements in place for return transportation if this goes beyond our normal working hours.
  6. Vehicles that have already being tuned by another company with software security may have an additional charge of £100 + VAT to cover the cost of the extra work involved for us to be able to flash the ECU. ­Revo being the main company that restricts access to the ECU memory.
  7. A complete specification / modifications list should be sent in advance including any preference, such as smoke levels, rev limits etc.
  8. Any additional work outside of the agreed specification will be notified to the customer prior to any extra charges being made.
  9. Work not included as part of the initial booking may incur extra charges, and will only be started providing we have enough time to complete the job without affecting other appointments in the diary.
  10. Smoke tolerance has the greatest effect on power level, the less smoke you consider acceptable, the less power potentially the car will make.
  11. Customers who would like to wait with their car must stay in the designated customer area and not cross into the workshop areas due to insurance liability and injury risk. By signing this agreement you agree that injury risk on our premises is entirely yours.
  12. The same applies to vehicles on the Dyno. Customers must not enter the Dyno Cell. Failure to adhere to this could result in the vehicle being removed from the workshop or Dyno and any work cancelled, with loss of any deposit paid.
  13. Customers must inform us of any previous work carried out on the vehicle that they are aware of that might affect the job we are undertaking
  14. Customers should notify Darkside Developments of any recording equipment fitted in vehicle (i.e Dash Cameras, Go Pro's, etc). These MUST be switched off for the full amount of time the vehicle is in our possession. Darkside Developments retain the right to refuse to perform any work if this has not been done.
  15. If customers do not wish for us to share photos of their vehicle (with or without registration showing) on our social media pages they must request this. Darkside Developments will not be held liable for any issues caused by posting any photos.

Vehicle collection and after sales

  1. Customers may be asked to take the vehicle out for a test drive with one of our mechanics or tuners before leaving. Any concerns should be made at this point.
  2. Customers are advised to take an extended test drive in the local area before setting off home; with arrangements in place for return transport should problems occur with the vehicle.
  3. Recovery and Breakdown cover must be held by the customer and the level of cover must allow recovery to our workshop, not just a local garage.
  4. We do not offer a mobile workshop service, nor can we collect cars free of charge should any problems occur.
  5. Cars are expected to have service intervals proportional to the power increase; e.g. double the power, half the service interval.
  6. Owners are expected to have a certain level of mechanical sympathy; abuse when cold or hot will cause excessive wear on engine parts, especially turbochargers.
  7. We cannot guarantee any power figures that we may quote. All our tuning is completely custom and power figures can alter due to the health of the engine and other components on the vehicle. We do not chase power figures by going beyond our usual safe parameters, compromising the reliability of the engine and parts fitted.
  8. We do not have unlimited secure parking available at our premises, so vehicles must be collected promptly. Damage caused on our site is entirely at your risk
  9. On collection it is the customers responsibility to check over their vehicle for any damage they believe may have been caused by Darkside Developments. This MUST be done before leaving the premises. Once the vehicle has left the premises, Darkside Developments will not be held responsible for any damage highlighted on the vehicle. This includes damage to external bodywork, interior, wheels and tyres
  10. Customers that want to keep their old parts must collect them at the same time as collecting the vehicle. We do not store parts unless arranged prior to booking date.


It is the customers responsibility to ensure they comply with rules and laws relating to their home country. Darkside Developments accepts no responsibility for the use of this part on the public highway where removal of emissions controls is prohibited. 

Due to new EU Legislation and as part of the VOSA Annual MOT inspection, if fitted at the factory, a DPF Unit must be present at the time of test.

All work carried out by Darkside Developments related to Catalytic Converter / DPF / EGR Removal is deemed as for Motorsport / Off Road use only. When booking in for work or purchasing parts it is the customer’s responsibility to ensure they comply with rules and laws relating to their home country.

We will only carry out the Catalytic Converter / DPF / EGR Removal process if the customer has agreed that the vehicle is not going to be used on the public highway and that Darkside Developments will not be held responsible for any future actions or issues relating to the Catalytic Converter / DPF / EGR removal. Road test will not be carried out after the work has been completed.


The customer must ensure that the vehicle has been maintained in accordance with manufacturer recommendations including relevant cambelt changes/timing chain maintenance and that it is in full and total road worthy condition.

The customer is therefore happy to allow his/her vehicle to be remapped at his/her own personal risk thus absolving Darkside Developments of any responsibility should any failure occur.

Darkside Developments accepts no responsibility for any damage or injury incurred whilst the Remapping is in operation or at any time after.

When tuning vehicles with the DPF still in place, Darkside Developments will not be held responsible for any faults or issues related to the filter blocking up. It is the customer’s responsibility to ensure the vehicle is driven in a manner that allows the DPF to regenerate (Refer to owner’s manual).

If any warning lights do appear you may have to force regenerate the DPF. Refer to owner’s manual or follow the link below as a guide. If you are not confident in carrying out this procedure please contact a professional.

Darkside Developments reserves the right to refuse any tuning work on vehicles regardless of the expenditure / number of orders placed with ourselves. We will NOT tune vehicles fitted with hybrid turbos / imitated / copied Darkside Developments products.

Privacy Policy

Darkside Developments are committed to protecting and preserving the privacy of our visitors when visiting our site or communicating electronically with us.

This Privacy Policy contains an explanation of what happens to personal data that you choose to provide to us, or that we collect from you whilst you visit this site. Our Privacy Policy should be read in conjunction with our Terms and Conditions.

We do occasionally update this Privacy Policy so please do return and review this page from time to time.

Information We Collect

In running and operating this website we may collect and process certain data and information relating to you and your use of this site. This data and information is detailed below:

  1. Details of visits to our website and the pages and resources that are accessed, including, but not limited to, traffic data, location data and other communication data that may assist us in understanding how visitors use this website.
  2. Information that visitors provide to us as a result of filling in forms on our website, such as when a visitor registers for information or makes a purchase.
  3. Information provided to us when our visitors communicate with us electronically for any reason.

Use of Cookies

Cookies are sometimes used to improve the website experience of a visitor to a website. We may sometimes use cookies on this website to record aggregate statistical information about the visitors to our site and the use that our visitors make of the website. When collected this information is used by us to improve our website and further enhance the visitor experience. Pease note that no personally identifiable information is recorded.

We may also use the cookies to gather information about your general Internet use to further assist us in developing or website. Where used, these cookies are downloaded to your computer automatically. This cookie file is stored on the hard drive of your computer. Cookies contain information that is transferred to your computer's hard drive and then stored there and transferred to us where appropriate to help us to improve our website and the service that we provide to you.

All computers have the ability to decline cookies. You can easily decline or remove cookies from your computer using the settings within the Internet Options section in your computer control panel.

Use of Your Information

The information we collect is used for our own use in developing our website and also occasionally by advertisers on this site. In addition, we may use the information for the following purposes:

  1. To provide you with information relating to our website, products or our services that you request from us.
  2. To provide you with information on other products that we feel may be of interest to you.
  3. To meet our contractual obligations to you.
  4. To notify you about any changes to our website, including improvements, and service or product changes that may affect our website.

If you are an existing customer, we may contact you with information about goods and services similar to those that you have expressed an interest in previously via our website.

Storing Your Personal Data

Information that we collect may on occasion be transferred and stored outside of the European Union for the purpose of supplying our goods to you. By submitting your personal data, you agree to this transfer, storing or processing. We will always take all reasonable precautions to make sure that your data remains secure and is handled in accordance with this Privacy Policy.

Data that is provided to us is stored on our secure servers - Darkside Developments do not store any financial details. This is handled by our payments provider.

The transmission of information via the Internet is not completely secure and therefore we cannot guarantee the security of data sent to us electronically and transmission of such data is therefore entirely at your own risk. Where we have given you (or where you have chosen) a password so that you can access certain parts of our site, you are responsible for keeping this password confidential.

Disclosing Your Information

Where applicable, we may disclose your personal information to any member of our group. This includes, where applicable, our subsidiaries, our holding company and its other subsidiaries (if any).

We may also disclose your personal information to third parties:

  1. Where we sell any or all of our business and/or our assets to a third party.
  2. Where we are legally required to disclose your information.
  3. To assist fraud reduction and minimise credit risks.

Third Party Links

You may find links to third party websites on our website. These websites should have their own privacy policies, which you should check. We do not accept any responsibility or liability for their policies whatsoever as we have no control over them.

Access to Information

The Data Protection Act 1998 gives all individuals the right to access personal information that is held about them. You can request a copy of any information that we hold about you. Please contact us if you wish to make such a request.

Contacting Us

If you have any questions or queries relating to this Privacy Policy then please contact us at sales@darksidedevelopments.co.uk


At Darkside Developments, we take the environment seriously and try to reduce our impact on the planet as much as possible. here are a few ways we do:

Waste oils: Collected and used for industrial heating in a clean burn heater.
Waste water: Collected, filtered and reused on-site.
Waste plastics, paper and card: Collected and recycled by BIFFA.
Waste metals: These are separated from non recyclable materials then recycled at a local merchants
Packaging: Where possible we use reuse packaging and boxes. We actively source used packaging locally which provides most of our packaging needs.
Invoices: We email all our Customer Invoices to save on Paper and Toner usage
Fitting Guides: All our fitting guides are downloadable PDFs with the links sent to customers automatically along with their Invoice.