BMW Tuning & Performance Parts

Showing 73–96 of 106 results

BMW M3 M4 JB4

S58 JB4 Tuner for 2021+ BMW G80 M3, G82 G83 M4, & 2023+ G87 M2

$895.28 – $1,062.23 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page

The BMW Tuning System – V-Switch Home Tuning BMW

$504.23 exc. VAT Add to basket
BMW M3 JB4

S55 JB4 Tuner for 2015-2020 BMW M3/M4/M2C

$671.18 – $838.13 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page

BMW M3 Tuning – V-Switch Home Tuning and ECU Remapping BMW M3

$504.23 exc. VAT Add to basket
BMW Gravity Wave

BMW M3 Carbon Fibre Boot Lid

$1,949.67 – $2,460.62 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
BMW-M3-Bumper-Corners

BMW M3 Carbon Fibre Bumper Corners

$670.96 – $926.43 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
BMW-M3-Canards-fitted

BMW M3 Carbon Fibre Canards

$470.61 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
BMW-M3-Carbon-Fibre-Front-Splitter-Fitted

BMW M3 Carbon Fibre Front Splitter

$793.31 – $984.92 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
BMW Gravity Wave Upgrade

BMW M3 Carbon Fibre Grille

$712.64 – $1,606.80 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
Carbon fibre parts

BMW M3 Carbon Fibre Rear Diffuser

$1,949.67 – $2,205.14 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
BMW Gravity Wave

BMW M3 Carbon Fibre Rear Wing

$1,949.67 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
BMW Gravity Wave upgrade

BMW M3 Carbon Fibre Side Fender Trim

$289.09 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
BMW-M3-Carbon-Fibre-Side-Skirts-Fitted

BMW M3 Carbon Fibre Side Skirts

$1,337.88 – $1,721.09 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
Side-Skirts

BMW M4 Carbon Fibre Side Skirts

$1,337.88 – $1,721.09 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
BMW JB4 Chip Tuning Software

S68 JB4 Tuner for 2023+ BMW XM & 2024+ BMW X5M / X6M (BETA)

$1,119.38 – $1,286.34 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page

Vented Carbon Fibre Bonnet | BMW M3 & M4 G80/G81/G82

$2,218.59 Add to basket
BMW-M3-Miltek-Exhaust

BMW M3 G80/G81 Milltek Axle Back Exhaust System

$2,699.41 – $3,633.73 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
Milltek sport

Milltek BMW M3 G80/G81 OPF Bypass Module (Dual Module)

$332.79 exc. VAT Add to basket
exhaust system

Milltek BMW M3 G80/G81 OPF/GPF Bypass – Non Resonated (MT Axle Back)

$811.59 – $1,399.85 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
exhaust system

Milltek BMW M3 G80/G81 OPF/GPF Bypass – Resonated (MT Axle Back)

$1,034.35 – $2,005.82 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
exhaust system

Milltek BMW M3 G80/G81 OPF/GPF Bypass Non-Resonated

$811.71 – $1,655.44 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page
exhaust system

Milltek BMW M3 G80/G81 OPF/GPF Bypass Resonated

$1,034.35 – $2,005.82 exc. VAT Select options This product has multiple variants. The options may be chosen on the product page

Armytrix BMW M3 / M4 200 Cell Cats

$3,227.04 exc. VAT Add to basket

Armytrix BMW M3 / M4 de-cat pipes

$1,680.75 exc. VAT Add to basket

BMW Upgrades: UK Fitting or Worldwide Mail Order

Shop our wide range of BMW performance parts, BMW tuning and accessories online at Paramount Performance. Order the upgrades for your BMW today and get worldwide mail order, or get your BMW performance mods fitted at our headquarters in Bidford-Upon-Avon in the UK. Our state-of-the-art workshop is equipped with the very best 4×4 3000 bhp rolling road.

BMW Performance Shop

Paramount Performance has been carrying out performance upgrades, tuning and remapping and conversions on performance cars since 1986. Becoming a well known and leading Performance tuning Company.

Best BMW Performance Parts

Paramount Performance has developed a selection of the best BMW performance tuning and performance part upgrade packages for your BMW.

Our packages include BMW modifications, BMW tuning parts and BMW system upgrades all designed to:

  • Improve drivability
  • Give you a better throttle response
  • Increase horsepower and torque
  • Improve gear acceleration
  • Give you a smooth, accelerated power and effortless driving experience

Check out our BMW HALO vehicle, BMW M3 Gravity Wave.

BMW Model Performance Part Upgrades

  • Unlocking BMW Petrol and Diesel Performance
  • At Paramount Performance, we specialise in unlocking the true potential of BMW engines — whether petrol or diesel. Each platform responds differently to tuning, but both can benefit from carefully matched hardware and ECU upgrades.
  • Petrol BMWs typically offer excellent performance gains, especially when combined with exhaust upgrades and air intakes. These engines are highly responsive to ECU tuning, delivering sharper throttle response, increased horsepower, and more engaging power delivery across the rev range.
  • Diesel BMWs, on the other hand, are often tuned for torque. Performance upgrades focus on enhancing mid-range pull, or even improving fuel efficiency, and creating a more flexible driving experience. Gains in torque can transform daily driving. ECU remapping, paired with intake and exhaust refinements, can deliver smooth, sustained power with greater responsiveness.
  • Key differences lie in power delivery and tuning strategy. Petrol tuning is often about peak performance and sound character, while diesel upgrades emphasise usable torque and long-range efficiency. Both can be transformed — it just depends on your driving goals.

BMW Tuning and Remapping By Model

BMW Remapping & BMW Tuning for all BMW Models:

BMW M Performance

Popular BMW models for tuning

BMW Upgrade FAQs

Can you improve the performance of both petrol and diesel BMWs?

Absolutely. Both petrol and diesel BMWs can benefit from professional performance upgrades – but the tuning approach is tailored to suit each engine’s characteristics.

Petrol BMWs respond exceptionally well to modifications. Whether naturally aspirated or turbocharged, these engines are built for revs and reward upgrades such as ECU remapping, sports exhausts, and air intake systems. The result is sharper throttle response, increased top-end power, and a more exhilarating drive.

Diesel BMWs, by contrast, shine when tuned for torque. Performance enhancements focus on boosting low-to-mid range pull, improving efficiency, and delivering smoother, stronger acceleration – ideal for motorway driving and everyday usability. ECU tuning, combined with supporting upgrades, can unlock impressive gains while maintaining excellent fuel economy.

At Paramount Performance, we offer custom solutions for both. Whether you drive a petrol M-car or a diesel 3 Series, we’ll help you get the best out of your BMW with upgrades designed around how you drive.

What are the most cost efficient and performance enhancing mods you recommend for my BMW?

ECU Remapping

Remapping is the most efficient way to unlock your BMW’s full potential. By recalibrating the engine control unit, we optimise parameters such as boost pressure, fuel delivery, and ignition timing – giving you more power, sharper throttle response, and improved torque delivery. Gains vary by model, but even a stock car can feel transformed.

Plug-and-Play Tuning Boxes

For a flexible, often reversible upgrade, advanced tuning boxes are an excellent option. These systems interface with your BMW’s sensors to adjust performance parameters in real time. Ideal for newer vehicles still under warranty, tuning boxes deliver noticeable improvements in both performance and efficiency — with installation that’s quick and non-invasive.

Why Choose Paramount’s Tuning Solutions?

  • Custom BMW maps developed in-house and tested on our dyno
  • Compatible with both petrol and diesel engines
  • Options for stage 1, stage 2, or hardware-supported tunes
  • Safe, smooth delivery with full drivability retained
  • Tuning boxes and remaps tailored to your model and goals

Whether you’re chasing sharper throttle response, stronger in-gear acceleration or more responsive everyday driving, remapping and smart tuning solutions offer unrivalled value – with no need to replace a single component.

BMW Upgrade Shop

Interested in upgrading your BMW but not sure where to start?

Get in touch with us at Paramount Performance where a member of our team will be happy to discuss your options with you. You can call us on +44 (0)1789 774444, email us on info@paramount-performance.com or speak to us via our website live chat.

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