MMR Performance M14x1.25 Wheel Stud & Lug Nut Conversion Kit – Extended Screw-In 70mm/80mm Studs, Conical/Ball Seat, Black Anodised – Track Day, Wheel Spacer Compatible Hardware Upgrade UK

Stud conversion for rapid wheel changes, spacer flexibility and a cleaner look

Stop wrestling with factory wheel bolts and upgrade to a screw-in stud conversion with matching lug nuts. This M14x1.25 thread kit transforms how you remove and refit wheels, making tyre swaps quicker, lining up wheels easier and helping protect your brake calipers from dings during changes. A proper motorsport-style setup that is ideal for track days and performance road cars.

We run this setup ourselves and our customers love the confidence and convenience it delivers. The result is a more secure fixing method than standard bolts and a hassle-free wheel change every time.

• M14x1.25 thread pitch stud conversion for a precise, repeatable fit
• Faster wheel swaps for track use and garage maintenance
• Improved ease of mounting wheels without fighting bolt holes
• Works safely with different wheel spacer thicknesses
• Reversible upgrade if you ever want to return to factory hardware
• Gloss black anodised nuts for a premium, stealthy finish
• Choice of seat profiles to suit your rims: conical or ball seat

Choose your stud length

• 70 mm studs: for no spacers or spacers up to 10 mm per corner
• 80 mm studs: for spacers from 10 mm to 20 mm per corner

Seat type guidance

• Conical seat nuts: typically suited to many aftermarket wheels
• Ball seat nuts: typically suited to many factory wheels

Why switch to a stud conversion

• Motorsport-ready wheel hardware for quick pit-stop style changes
• Reliable engagement length when using wheel spacers
• A cleaner, more purposeful look with black anodised nuts
• Great for track day enthusiasts, time attack, sprint and fast road use

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Professional fitting

Want it installed properly the first time? Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.

Note: Select the correct stud length and seat profile for your wheels and spacer setup. Always torque correctly and recheck after initial mileage or heat cycles.