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Audi A4 (B5) Tuning & Performance Parts

The B5 S4 has always had a bit of a cult following, and the 2.7 biturbo is a big part of why. At Awesome GTI, you’ll find Audi S4 B5 tuning parts for owners who want to refresh the car or take the performance further.

Some owners are chasing more power, while others are focused on tightening up an ageing setup or changing the look. Our S4 B5 range covers both, with parts selected specifically for the model and clear fitment information to help you choose with confidence.

Audi S4 B5 Parts: Bodystyling and Braking

The B5 has a shape that doesn’t need much messing with, so the right exterior parts can make a noticeable difference without changing the character of the car. At Awesome GTI, the Maxton Design Rear Diffuser is available for the Avant, while the Maxton Design Gloss Black Front Splitter adds more definition to the front end.

Brakes are worth paying just as much attention to, especially on an older performance car. We stock options including the EBC Redstuff Front Pads and Tarox Strada Front Brake Pads, giving you different routes depending on how you use the car and what you want from the pedal feel.

If you’re not sure which setup suits your S4 B5, the Awesome GTI team can help you compare the options before you order.

Why S4 B5 Owners Choose Awesome GTI

We've been fitting and upgrading VW, Audi, SEAT and Skoda cars since 1989. The B5 platform is one we still know well after this many years of them coming through the workshop. If you're after Audi S4 tuning beyond bolt-on parts, that's usually a conversation rather than a click. Our APR remap route covers the Audi S4 B5 remap side through a proper consultation. Our own Dynojet 4WD dyno checks the results properly afterwards.

That said, most owners start with the parts they can see. Contact the Awesome GTI team for advice on either route, or browse our Audi S4 B5 performance parts below and get your next job underway.

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  • Schwaben Crankshaft Locking Pin Schwaben Crankshaft Locking Pin
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    Schwaben Crankshaft Locking Pin

    This crankshaft locking pin is commonly used when replacing the timing chains in your vehicle. This is used to fix the crankshaft in the correct positions for servicing the timing chains. Please...

    £31.53
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  • Schwaben Camshaft Drive Gear Puller - 1.8T 20V Schwaben Camshaft Drive Gear Puller - 1.8T 20V
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    Schwaben Camshaft Drive Gear Puller - 1.8T 20V

    Specially designed to remove 5 and 6 spoke camshaft pulleys. Short arms allow tool to work in limited space areas. Set Contains: Cross bar with forcing screw, Two single reversible arms. Two double...

    £76.11
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  • Schwaben Ignition Coil Puller Kit - 4 Pieces
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    Schwaben Ignition Coil Puller Kit - 4 Pieces

    Assorted coil pack removal tools save skinned knuckles, and prevent coil damage cause by makeshift removal methods. Different shaped puller heads fit various VW/ Audi coil configurations...

    £101.13
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  • Schwaben Ignition Coil Pack Puller
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    Schwaben Ignition Coil Pack Puller

    The Schwaben coil removal tool makes a hard job look easy. Designed to safely and easily remove coils from many VW/Audi coil-on-plug ignition systems, this handy special tool grabs each coil...

    £23.91
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  • Schwaben Oil Storage Catch Can - 10-Litre Schwaben Oil Storage Catch Can - 10-Litre
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    Schwaben Oil Storage Catch Can - 10-Litre

    The Schwaben large capacity oil drain catch can lets you perform a mess-free oil change and dispose of your drain oil responsibly. The rugged ABS container has a generous 10 liter (10,000 mL, more...

    £42.40
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  • Schwaben Oil Storage Catch Can - 6-Litre Schwaben Oil Storage Catch Can - 6-Litre
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    Schwaben Oil Storage Catch Can - 6-Litre

    The Schwaben standard capacity oil drain catch can lets you perform a mess-free oil change and dispose of your drain oil responsibly. The rugged ABS container has a six litre capacity, large enough...

    £39.14
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  • Schwaben Magnetic Protecta Wheel Socket Set Schwaben Magnetic Protecta Wheel Socket Set
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    Schwaben Magnetic Protecta Wheel Socket Set

    Protect your expensive mag wheels with Schwaben six-point, deep-well impact sockets. Schwaben Protecta Sockets have color coded mar-free exterior sleeve  that prevent nicks and scratches left by...

    £86.99
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  • Schwaben Exhaust Pipe Cutter Schwaben Exhaust Pipe Cutter
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    Schwaben Exhaust Pipe Cutter

    This Schwaben Exhaust pipe cutter is designed to cut a full 360 degree's around the pipe in very tight spaces. Cuts pipes 3/4” to 3” (19 to 76mm) in diameter. 15 blades effectively cut pipe so only...

    £78.29
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  • Schwaben Fluid Suction/Fill Pump Schwaben Fluid Suction/Fill Pump
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    Schwaben Fluid Suction/Fill Pump

    This hand held Schwaben tool makes changing fluids an easy, quick task. Suitable for oils, water and any non corrosive liquid. Ideal for extracting and replacing Power steering fluid, Differential...

    £66.33
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  • Schwaben Wheel Hanger 3-Pack Schwaben Wheel Hanger 3-Pack
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    Schwaben Wheel Hanger 3-Pack

    Longer, lighter and easier to use, our aluminum wheel hanger makes it easy to remove and install wheels. Just thread the hanger stud into a wheel bolt hole and hang the wheel safely while you rotate...

    £94.60
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  • Schwaben Spindle Housing Spreader Tool Schwaben Spindle Housing Spreader Tool
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    Schwaben Spindle Housing Spreader Tool

    Many German suspensions hold the strut in a split housing that is clamped tightly around the strut tube with a pinch bolt. Efforts to spread the housing after removing the bolt using chisels or pry...

    £23.91
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  • Schwaben Trim/Molding Tool Kit - 5 Pieces Schwaben Trim/Molding Tool Kit - 5 Pieces
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    Schwaben Trim/Molding Tool Kit - 5 Pieces

    Plastic five-piece tool kit removes trim and door panels, mouldings, and adhesive backed logos and badges, without damage. Made of impact resistant plastic that will not mar surfaces as metal...

    £34.79
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Frequently asked questions

How much power can an Audi S4 B5 2.7 V6 Biturbo make with tuning?

There's plenty of potential in the Audi S4 B5 2.7 biturbo V6, but the final figure depends on the software, hardware and condition of the car. A more involved Audi S4 B5 tuning setup can go well beyond standard power, although the car needs to be built around the level you're aiming for rather than chasing a figure on its own.

Is an Audi S4 B5 remap worth it?

An Audi S4 B5 remap can make a noticeable difference to the way the 2.7 biturbo delivers its power without immediately moving into major hardware changes. The condition of the car still matters, though. On an older B5, we'd want to know the engine is healthy before increasing boost or asking more from the standard components.

Which Audi S4 B5 performance parts make the biggest difference?

That depends on what you want from the car. ECU tuning is an obvious option if more power is the goal, while cooling and exhaust upgrades become more relevant as the setup develops. Awesome GTI stocks Audi S4 B5 performance parts for different levels of build, so you can plan the car around how you actually intend to use it.

What should I check before tuning my Audi S4 B5?

Start with the condition of the car. Service history and any previous modifications matter just as much as the Audi S4 B5 parts you're planning to add. Any faults or overdue maintenance should be sorted first. If you're unsure what your B5 needs before tuning, the Awesome GTI team can inspect the car and talk through the next step with you.