This incredible piece is the front clip of the Go Kart # 2 driven by Ayrton Senna during the 1993 Elf Master Karting, in Bercy / Paris / France. It has been hand signed and dated in blue marker by Ayrton Senna.

On that December weekend, fans were treated to the final competitive head-to-head between Formula 1 giants Alain Prost and Ayrton Senna. And, predictably, the pair took it very seriously: four-time world champion Prost having tested extensively before the event; Senna, a three-time title holder, having a kart shipped to Brazil so that he could practise.

The format for the two-day event organised by French racer Philippe Streiff, wheelchair-bound since a pre-season F1 testing accident in Brazil in 1989, pitted over 60 drivers – more than a dozen of them contemporary grand prix racers – against each other around a 600-metre circuit.

Young karting stars, including Danilo Rossi, Nicola Gianniberti, Miku Santavirta and Sebastien Enjolras, strutted their stuff on the first day, with Rossi coming out on top in their final.

But it was the team events that fans had really come to see. Following two qualifying sessions, teams were made up of three drivers (one F1 star from each of the two sessions and one karting youngster).

And with Senna and Prost joined by Philippe Alliot, Paul Belmondo, Eric Bernard, Andrea de Cesaris, Yannick Dalmas, Betrand Gachot, Jean-Marc Gounon, Olivier Grouillard, Damon Hill, Johnny Herbert, Pierluigi Martini and Olivier Panis, the fans were in for a treat.

In the first relay, the Prost and Senna squads both hit trouble with their 100cc karts, leaving the team led by Minardi ace Martini to win.

The finale promised one last hurrah for Prost and Senna. Sadly for fans, Ayrton’s kart broke as he was reeling in erstwhile leader de Cesaris. The Italian soon fell behind Prost, leaving the world champion to uphold local honour.

Senna, who twice finished runner-up in the world karting championship, later gave a group of journalists a few tips on how to master karting.

“You have to drive sideways because go-karts are small, short-wheelbased and very quick to react. You are always sideways at some stage of the corner so that you can position yourself better to get a feel for the grip. In that respect it’s very different from a racing car.

“In a racing car, if you try to lean on it you just slide and go off. In a kart you have to be hard and aggressive, but also precise. You use your body a little bit and normally your back suffers from the seat, especially if you haven’t been in one for some time.”

Here is an extremely rare piece of memorabilia.

This Goodyear Eagle rear tire has been used by Ayrton Senna during the 1993 Brazil GP (Interlagos) while driving the legendary McLaren MP/8.

It has been hand signed and dated by Ayrton Senna. He also added the mention "Brazil".

This extraordinary piece is accompanied by a McLaren certificate.

It was the second race of the 1993 Formula One World Championship.

The 71-lap race was won by local hero Ayrton Senna, driving a McLaren-Ford, with Briton Damon Hill second in a Williams-Renault and German Michael Schumacher third in a Benetton-Ford. Senna was the last Brazilian driver to win his home race until Felipe Massa in 2006.

Here is an extremely rare piece of memorabilia.

This Goodyear Eagle rear tire has been used by Ayrton Senna during the 1993 Brazil GP (Interlagos) while driving the legendary McLaren MP/8.

It has been hand signed and dated by Ayrton Senna. He also added the mention "Brazil".

This extraordinary piece is accompanied by a McLaren certificate.

It was the second race of the 1993 Formula One World Championship.

The 71-lap race was won by local hero Ayrton Senna, driving a McLaren-Ford, with Briton Damon Hill second in a Williams-Renault and German Michael Schumacher third in a Benetton-Ford. Senna was the last Brazilian driver to win his home race until Felipe Massa in 2006.

Here is an extremely rare piece of memorabilia.This disk brake has been used by Ayrton Senna during the 1991 season which has been his third world Champion title.

It comes from the legendary McLaren MP4/6

It is hand signed and dated by Ayrton Senna.

This extraordinary piece is accompanied by a McLaren certificate.