Model of car driven by Bob Wollek and Stefan Johansson to 1st place at Mugello, 1983.

Easy, low-cost performance increase for Slot It GTP/Gp. C cars racing with magnets on plastic track...

Install SIPT06 19x10mm silicone slicks (a pair of these comes as extra tires with most of these cars) and an SICN07 racing magnet.  The tires slip onto the rear wheels and the magnet snaps into the chassis in place of the original magnet.  These two simple changes make a huge difference in the handling of the car and produce much faster lap times. 

Need more grip?  Try these aftermarket tires!  Supertires 1400, 1401, 1402. 1403, 1404, 1405