These fronts fit the 4-Tec 2

ARRMA ARA320604 Radio Box Set

1 x 16T Mod1 Safe-D Pinion Gear

Black anodized with laser etched logo

The Kyosho IFW431B is a heavy-duty rear center universal shaft measuring 110mm

Scalextric C7005 Retro Fit Digital Chip Universal Conversion 1/32 Slot Car Cup Racer Parts These fronts fit the 4-TecScalextric Retro Fit Digital Chip C7005 This Scalextric retro digital chip allows the conversion of most standard Scalextric and non Scalextric branded cars to work on the Scalextric Digital layouts. Most Scalextric cars, from 1957 to current date, can be converted to digital operation. The conversion requires hobbyist skills and some tools including a soldering iron.