Modified Parts Supplier is a UK trade supplier of performance parts, infotainment retrofits and styling upgrades. We supply garages, tuning workshops, mobile fitters and online retailers at wholesale prices, so you can fit or resell with a margin that's actually worth having.
We're not a marketplace and we don't sell to the public at these prices. Trade accounts only.
What we supply
Our range is built around the platforms UK workshops see every day:
- Wireless CarPlay & Android Auto retrofits — OEM-integration modules and full head unit replacements for BMW, Mercedes, Audi, VW, SEAT, Skoda, Porsche, Ferrari and Lamborghini. Our biggest category and the fastest-moving.
- Performance air intakes — BMW B48, B58 and S58, plus VAG EA111, EA211 and EA888.
- Exhausts and downpipes — stainless decat and sports cat, BMW and VAG fitments.
- Lighting — LED headlight conversions, dynamic indicators, ambient kits and universal RGB kits.
- Engine parts, audio accessories, styling, oils and detailing to round out an order.
Our range is curated for businesses that install, retrofit or resell. Products are selected for fitment accuracy and installer reliability, not consumer shelf appeal. Every kit is vehicle-specific with the correct harness where applicable, so there's no fabrication and no guesswork on the ramp.
Fitment support
Not sure a part fits? Send us the registration or chassis number and we'll confirm before you order. Wrong parts cost you a booked slot and a customer's goodwill, so we'd rather check first.
Trade pricing
Every price shown publicly on this site is RRP — what we suggest you sell at. Your trade price appears automatically once your account is approved and you're signed in.
- 5 to 9 units — 10% off RRP
- 10 to 24 units — 15% off RRP
- 25 units or more — 20% off RRP
Minimum order is 5 units per product. The minimum applies per product, so it's five of the same item rather than five mixed. Discounts apply per product line.
Payment is due in full at the time of ordering. We don't currently offer credit terms. For larger orders we can raise an invoice for bank transfer — just ask before you order.
Stock and delivery
We hold our stock in the UK. Order before 2pm on a working day and it's dispatched the same day — no six-week wait on a container, no customs surprises, no chasing a supplier in another timezone when your customer's car is on the ramp.
We ship with a courier chosen to suit the size of the consignment, and every order is tracked. Delivery is charged at cost and calculated at checkout, so you're never paying a padded handling fee.
Warranty and returns
Everything is supplied with a 12-month warranty from the date of invoice, covering manufacturing defects.
Unwanted stock can be returned within 14 days, unused and in its original packaging, subject to a 5% restocking fee. Faulty items are covered under warranty at no cost to you — contact us before returning anything so we can authorise it.
Your customers buy these parts under your name, so we keep our terms clear and stand behind what we supply. Full details are on our trade terms page.
Reselling
You're free to resell our products however suits your business, including on eBay, Amazon and other marketplaces. We don't impose channel restrictions.
How to open an account
- Send us your business details Via email.
- We'll verify your business and approve your account.
- Sign in and your trade pricing shows automatically across the site.
Trade account holders are notified first about new stock and trade-only offers.
Trade terms
Full terms covering minimum order quantities, payment, delivery, warranty and returns are on our trade terms page. Common questions are answered on our trade FAQ.
Please note: decat downpipes and similar components are sold for motorsport and off-road use only and are generally not road legal in the UK. As the reseller or installer, you are responsible for making this clear to your customer.