H&R

H&R Anti-Roll Bar Kit - Porsche 997 911

£637.86

Including Taxes

Application

Suspension Secrets Approved

Free Worldwide Shipping

Technical Support Available

H&R front and rear anti-roll bar kits for Porsche 997 Carrera and Turbo models.

H&R components are engineered and manufactured in Germany to sharpen chassis response while retaining road usability.

Applications

33239-1: Carrera / Carrera S, up to 06/2008 - OE rear bar 997.333.701.xx
33239-2: Carrera 4 / Carrera 4S, up to 06/2008 - OE rear bar 997.333.701.xx
33239-3: Turbo - OE rear bar 997.333.705.xx
33239-4: Carrera / Carrera S, from 07/2008 - OE rear bar 997.333.703.xx
33239-5: Carrera 4 / Carrera 4S / Turbo - OE rear bar 997.333.703.xx

Bar diameters and adjustment vary by application; choose using the production date and original rear anti-roll bar number.

Important: Please check the selected application, suspension specification and production date before ordering. Contact our team with your registration or VIN if you would like us to confirm fitment.

Geometry Explained

Anti-Roll
Unlike coil springs, anti-roll bars very rarely have the spring rate marked on them. This means that the rate either needs to be calculated or measured.

If you are designing your own anti-roll bar or have a relatively simple shape roll bar then it is often more accurate to calculate the bars stiffness. There are two main equations required to calculate the stiffness of an anti-roll bar. First, the roll bar needs to be recognised as three separate parts. It has one torsion bar (often the thickest longest section) and two cantilevers (often two short sections that mount to the drop links).

Delivery and returns

All parts purchased on our website are shipped internationally free of charge. We accept return requests made within 14 days of receipt of the item.

Need help with something?
Email: sales@suspensionsecrets.co.uk

What our customers say.

Real feedback from customers who have transformed the handling of their cars with Suspension Secrets upgrades.

G87 M2 Handling transformation

Supplied and fitted by the team at Suspension Secrets along side their solid front control arm bushes and Eibach Pro springs. I cant recommend this enough, stability and grip are ...

Supplied and fitted by the team at Suspension Secrets along side their solid front control arm bushes and Eibach Pro springs. I cant recommend this enough, stability and grip are on another level. A* service provided by the team from start to finish. Highly recommended!

- A.J.S

Effortless & Accurate

The results have exceeded my expectations, I'm really pleased with the car. The ride is similar to stock but it's taken the jitteryness away over small ripples in the road. ...

The results have exceeded my expectations, I'm really pleased with the car. The ride is similar to stock but it's taken the jitteryness away over small ripples in the road. I was slightly apprehensive that the stock dampers might be exposed but I needn't have worried, the car rides exactly as I'd expect & want from a roadgoing M-car. The real revelation is the steering, I could feel the difference as soon as I turned out of your premises. Gone is the sluggish, heavy response - it's now quick, effortless & accurate, almost as if the power steering had been switched off beforehand. The car feels like it's 200kg lighter but at the same time, more solid & composed. For me, it's a perfectly-judged road setup - thanks again

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Transformational

Recently bought a 2025 M3 LCI which seemed ok out of the box. In the wet there was quite bad understeer and slightly unpredictable transition into oversteer. The CS+ handling ...

Recently bought a 2025 M3 LCI which seemed ok out of the box. In the wet there was quite bad understeer and slightly unpredictable transition into oversteer. The CS+ handling package transformed the car. The grip is ridiculous, feel is improved, can really lean on the car. Driving in the wet traction is like it’s dry, extremely stable. Car is predictable, any transition to understeer or oversteer is communicated and feels like slow motion with plenty of time to correct. Feel like all the handling of a CS car with all the comfort or a regular M car. Absolutely love the car now.

- Yaqub A.