Zef Eisenberg

Ze'ev "Zef" Eisenberg (22 March 1973 – 1 October 2020) was the British founder of sports nutrition brand Maximuscle, an ultra-speed motorbike racer and television presenter.

While working at the store, Eisenberg wrote a monthly newsletter on the science of nutrition and, in 1993, self-published a book on the same topic.

Eisenberg used the profits from the book to start supplying protein supplements to other bodybuilders.

Eisenberg was a fully qualified senior gym instructor, specialising in nutrition and conducted two years of endocrinological research at the British Medical Research Centre and Pharmaceutical Association.

providing the knowledge and passion to form Maximuscle.

He went to a design and technology college in Barnet, north London, after doing his GCSEs.

During his GCSEs, he was sponsored by Digital for a new XY axis robot, when just 15 years of age for one of his Technology GCSE projects.

He further featured in the Sunday Times for his rear-wheel engine powered cycle.

Even though Eisenberg confessed to being self-taught in the world of engineering, welding, tuning and engines, he trained and achieved his certification at H&S Rolls-Royce Portsmouth for the C250 series turbines, as used in his world record setting land speed motorbike.

Eisenberg founded the sports nutrition brand Maximuscle in 1995.

He held over 70 British and world land speed records, including a Guinness World Record.

They include the world's fastest turbine bike (234 mph); the UK's fastest (no-fairing) 'naked' bike (225.6 mph); world's fastest motorbike racer on sand at 201.5 mph; Britain's fastest-ever motorcycle crash at over 230 mph; fastest ever wheel powered vehicle in a 1,500 hp Porsche at Pendine Sands at 210.33 mph, and fastest electric motorbike in the world (unfaired) with a 197 mph GPS peak speed.

He was presenter for the TV series Speed Freaks, a six episode production on ITV4, produced by Keshet, and appeared on several other TV shows, including The Motorbike Show with Henry Cole and Zef's famous Madmax Turbine bike.

In 1995, Eisenberg founded sports nutrition brand Maximuscle with £3,000.

Initially supplying whey-based supplements, the company's product range grew to include drink powders, edible gels, and protein bars.

Maximuscle was the first UK sports nutrition brand to have its products screened under World Anti-Doping Agency rules.

In 2010, Maximuscle was selling £80 million worth of products per year.

In 2011, GlaxoSmithKline (GSK) bought Maximuscle for £162 million.

At the time, Maximuscle was Europe's best-selling sports nutrition brand.

Eisenberg continued on in a consultancy role with GSK for Maximuscle.

Eisenberg set up Madmax Race Team in 2011 from Guernsey.

The Madmax is a specialised engineering team that develop motorbikes, cars, quads, and land speed vehicles.

The Madmax Race Team is behind multiple world land speed records on bikes, quads, and cars, with over 50 land speed, British, world, and Guinness records to its name, including the world's fastest electric unfaired bike.

It bought BBC Villers House in 2012 for £16 million, with plans to develop Ealing Broadway Crossrail station, office block and retail.

The engineering autosports arm builds bespoke high-speed vehicles.

It also designed and manufactured the Eisenberg V8, the world's smallest and lightest V8 engine motorbike.

The Madmax ultra-speed motorbike race team is part of Maxicorp.

Maxicorp is the registered trademark holder of Eisenberg and Madmax in the UK and EU.

The German food giant Krüger bought Maximuscle from GSK in January 2018.

Eisenberg ran Guernsey-based Maxicorp.

The company is active in property investment, autosports racing, and engineering.

The property business has bought and sold properties worth around £210 million in London, the Channel Islands and Gibraltar.

Eisenberg, who was a long time fan of the Isle of Man TT, sponsored three times IOM TT podium winner Daley Mathison and Dr Miguel Gimeno Fabra on the Nottingham of University (NOU) Electric motorbike under the Zero TT class for 2019.

The NOU bike had been designed to be more powerful and capable than all its previous years.

The day before Madmax Team rider Daley Mathison was meant to ride the Zero TT bike to number one podium position, but Daley was killed in the Superbike crash.

Zef Eisenberg promised Daley's wife Natalie, and family that this was unfinished business and he would take the NOU bike to world record glory himself as a tribute and final send-off to Daley.

The Madmax / NOU electric motorbike was re-engineered to be more powerful than ever and on 21/22 September, Eisenberg, along with the help of Dr Miguel achieved four FIM world speed records (at Elvington, Yorkshire), wearing Daley's actual 'daisy' kneesliders and with Daley's wife Natalie present, Eisenberg fulfilled his goal of making the bike into a world record bike for Daley.

He died on 1 October 2020 aged 47, when his car flipped and crashed while attempting a British land speed record at RAF Elvington, Yorkshire.

Born in Merton in south London, Eisenberg left school at 15 after his GCSEs to take a job in a health shop.

A competitive bodybuilder at the time, Eisenberg said he took the job to get discounts on nutritional supplements.