4SRC Limited

4SRC Limited 4SRC: Carbon specialists, Wrapping, tuning, parts. Automotive excellence.

BMW M4 Track Toy BuildAnother long-term customer and good friend has added a new toy to the garage – this BMW M4.During ...
05/06/2026

BMW M4 Track Toy Build

Another long-term customer and good friend has added a new toy to the garage – this BMW M4.

During our initial inspection, we found early signs of oil leakage from both the valve cover assembly and oil sump area. The engine mounts and gearbox mounts were also showing clear signs of ageing and deterioration, so rather than simply replacing worn components, we decided to take the opportunity to refresh and upgrade the car properly.

The work includes:
• Valve cover replacement
• Oil sump leak rectification
• Engine mounts replacement
• Gearbox mounts replacement
• Hardrace suspension and chassis upgrades
• Full inspection and setup before returning the vehicle to the track

Many performance cars reach a stage where maintenance and upgrades should go hand in hand. Addressing issues early not only improves reliability but also restores the driving experience that these cars were designed to deliver.

At 4SRC, while many people know us for Nissan GT-Rs, our workshop regularly works on a wide range of performance and sports cars, from BMW M cars and AMG models to Japanese performance platforms and track-focused builds. Whether it's preventative maintenance, chassis development, carbon fibre upgrades, drivetrain work, or complete track car preparation, we have the experience and facilities to support your project.

A fast car is only as good as its foundation. Reliability, suspension geometry, bushings, mounts and chassis setup are often where the biggest improvements can be found.

More updates on this M4 build coming soon.

Website: www.4src.co.uk
Email: [email protected]
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

Most GT-R owners will never notice it.The right owners will notice it immediately.Introducing the 4SRC Dry Carbon Scuttl...
28/05/2026

Most GT-R owners will never notice it.

The right owners will notice it immediately.

Introducing the 4SRC Dry Carbon Scuttle Panel (Wiper Cowl Cover) for the Nissan GT-R R35.

Positioned between the bonnet and windscreen, the scuttle panel is one of the largest visible exterior trim pieces on the entire vehicle. Yet since the GT-R was introduced in 2007, it has remained a simple plastic component.

For most owners, that's perfectly fine.

For those building something special, it has always stood out.

Manufactured entirely from prepreg carbon fibre and cured in an autoclave, the 4SRC Scuttle Panel is a complete replacement component — not an overlay and not a carbon-skinned OEM part.

Every mounting point, drainage channel and functional detail has been engineered to retain OEM functionality whilst delivering the finish expected from a premium GT-R build.

✔ Full replacement design
✔ Prepreg carbon fibre construction
✔ Autoclave manufactured
✔ OEM mounting points retained
✔ OEM drainage functionality retained
✔ OEM wiper operation retained
✔ High-gloss exposed carbon finish

This is not a product developed for the mass market.

It was developed for the owners who obsess over the details others overlook.

The first production batch is now in manufacture.

RHD version available to order now.

LHD version currently under development.

Website: www.4src.co.uk
Email: [email protected]
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

Another ACARDASH digital cluster installed at 4SRC UK this week — and every time we fit one, it reminds us just how much...
23/05/2026

Another ACARDASH digital cluster installed at 4SRC UK this week — and every time we fit one, it reminds us just how much the R35 platform is starting to enter a new era.

Many early GT-Rs are now over 15 years old, and one of the first things that begins to show age inside the car is the factory cluster:
fading LEDs, dim displays, uneven brightness and an overall dated feel at night.

The ACARDASH system completely changes that.

The interior instantly feels newer, sharper and far more modern, while still keeping an OEM-style integration that suits the character of the R35 perfectly.

We’re also happy to confirm that our latest software revision now includes an updated shift light / gear change indicator feature — adding an even more driver-focused feel to the experience.

And for all existing customers who previously purchased their ACARDASH through 4SRC:

The latest software update is completely FREE.

Customers can either:
• request the update files remotely
• or visit our workshop for free software updating and support

No update fees.
No labour charges.
Just proper long-term support for the products we supply.

Professional installation available at our UK workshop.
Worldwide shipping available.

Website: [www.4src.co.uk](http://www.4src.co.uk)
Email: [[email protected]](mailto:[email protected])
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

OEM+ refinement with a cleaner, more premium engine bay appearance.This R35 GT-R recently visited us for a full installa...
21/05/2026

OEM+ refinement with a cleaner, more premium engine bay appearance.

This R35 GT-R recently visited us for a full installation package featuring:
• 4SRC Titanium Radiator Top Pipe
• 4SRC OEM-Style Carbon Fibre Engine Cover
• 4SRC Aluminium Coolant Expansion Tank

Designed to improve both aesthetics and durability while maintaining an OEM-inspired layout and fitment quality.

The titanium top pipe adds a subtle motorsport touch with improved corrosion resistance and heat tolerance, while the prepreg carbon engine cover transforms the centrepiece of the VR38 engine bay. Finished together with our aluminium expansion tank for a cleaner and more robust cooling system setup.

All products are in stock and available now.

Professional installation available at our UK workshop.
Worldwide shipping available.

Website: www.4src.co.uk
Email: [email protected]
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

More than just a visual upgrade.The 4SRC R1 Rear Bumper & Rear Valance Kit was designed with a stronger focus on rear ai...
17/05/2026

More than just a visual upgrade.

The 4SRC R1 Rear Bumper & Rear Valance Kit was designed with a stronger focus on rear airflow management, weight reduction and overall structural refinement compared to the OEM rear setup.

The vented upper rear section helps release trapped heat and air around the exhaust area, while the redesigned lower profile delivers a cleaner and more aggressive rear-end appearance without unnecessary bulk.

Manufactured using prepreg carbon fibre construction for improved rigidity, reduced weight and a cleaner overall finish.

Perfectly paired with the 4SRC R1 Drag Spoiler — the same spoiler configuration recently seen on the JM GT-R at Racewars UK.

For customers looking to complete the full R1 rear-end package, combined package pricing is available when ordered together.

Available now with worldwide shipping.

Website: www.4src.co.uk
Email: [email protected]
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

The wait is finally over.Our carbon fibre bonnet scoops for the Nissan GT-R R35 (2007–2024) are back in production after...
13/05/2026

The wait is finally over.

Our carbon fibre bonnet scoops for the Nissan GT-R R35 (2007–2024) are back in production after being unavailable for several months.

The previous moulds have now been fully retired, and this latest batch has been produced from completely new tooling for improved consistency, sharper finish quality and cleaner overall fitment.

First batch dispatch starts next week, with continuous weekly production and delivery following shortly after.

Available to order now via our website.

Website: www.4src.co.uk
Email: [email protected]
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

carbonfibre prepregcarbon jdm nismo godzilla carbonaero madeinuk performance drycarbon gtrporn

Huge congratulations to the entire JM Imports team on an incredible performance at Racewars UK 🇬🇧Setting new event recor...
11/05/2026

Huge congratulations to the entire JM Imports team on an incredible performance at Racewars UK 🇬🇧

Setting new event records while competing across both the 1/4 mile and 1/2 mile classes is no small achievement. Results like these are built through years of experience, relentless development, and countless hours behind the scenes — and the JM team continues to prove why they are one of the leading names in the UK high-performance GT-R scene.

We are proud to see our 4SRC carbon fibre drag wing and carbon doors being used on the black JM Stealth GTR throughout the event.

For us, this is what motorsport is really about — real cars, real competition, and real performance under extreme conditions.

A huge respect to Parv, JM, the entire crew, support staff, and everyone involved in making this happen. It has been a pleasure working together over the years, and we look forward to supporting more record-breaking projects in the future 🤝



r35gtr nissan nismo motorsport dragracing halfmile quartermile carbonfibre drycarbon prepreg jdm godzilla becauseracecar

Website: www.4src.co.uk
Email: [email protected]
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

Another loyal customer back at 4SRC for a cooling system upgrade on their Nissan GT-R R35.After more than 10 years of se...
10/05/2026

Another loyal customer back at 4SRC for a cooling system upgrade on their Nissan GT-R R35.

After more than 10 years of service, the original radiator had started showing signs of leakage — something we commonly see on ageing GT-Rs, especially on cars running increased power over the years. Rather than waiting for a bigger issue to happen, the customer decided it was the right time to upgrade to a KOYO radiator for improved reliability and cooling performance.

As these cars continue to age, preventative maintenance becomes just as important as performance modifications. Keeping the cooling system in proper condition is essential for both fast road and high-performance use.

At 4SRC, we continue to support the GT-R community not only with high quality parts, but also professional installation, servicing and upgrade work carried out in-house.

Website: www.4src.co.uk
Email: [email protected]
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

The rear end that completely changes the presence of the Nissan GT-R R35.Our 4SRC R1 Rear Bumper & Rear Valance Kit is n...
09/05/2026

The rear end that completely changes the presence of the Nissan GT-R R35.

Our 4SRC R1 Rear Bumper & Rear Valance Kit is now AVAILABLE IN STOCK and ready for immediate dispatch. No long waiting list, no pre-order delays.

Designed for owners who want a more aggressive and modern rear profile while keeping clean body lines and proper fitment. The R1 setup gives the R35 a much wider and lower visual appearance, especially when paired with a proper diffuser and exhaust setup.

✔ Available now
✔ Worldwide shipping available
✔ Collection welcome from our UK workshop
✔ Professional installation available in-house

Product name:
4SRC R1 Rear Bumper and Rear Valance Kit

If you’ve been waiting to transform the rear end of your R35 properly, this is one of the cleanest setups we have produced.

Website: www.4src.co.uk
Email: [email protected]
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

Another returning customer back in the workshop today for OEM spark plug replacement and installation of our 4SRC alumin...
09/05/2026

Another returning customer back in the workshop today for OEM spark plug replacement and installation of our 4SRC aluminium coolant expansion/header tank for the Nissan GT-R R35.

At 4SRC, we don’t just supply performance parts — we also provide professional installation and workshop support for the GT-R platform. From routine maintenance to performance upgrades and full carbon fibre transformations, everything is handled with the same attention to detail we expect on our own cars.

Our aluminium alloy coolant expansion tank is designed to replace the ageing OEM plastic unit with a stronger and cleaner engine bay solution, while maintaining OEM-style fitment and functionality.

Product: 4SRC Nissan GTR35 Aluminum Alloy Radiator Coolant Expansion Header Tank

Website: www.4src.co.uk
Email: [email protected]
WhatsApp: +44 77177 98433
Office: +44 (0)1925 850176

Address

Unit 9, Trinity Court, Birchwood
Warrington
WA36QT

Opening Hours

Monday 10am - 7pm
Tuesday 10am - 7pm
Wednesday 10am - 7pm
Thursday 10am - 7pm
Friday 10am - 7pm
Saturday 10:30am - 3:30pm

Telephone

+441925850176

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