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

These fronts fit the 4-Tec 2

Squad One body for the HPI Recon

Black w/Inserts 22 5

Precision machined aluminum housing

Scalextric C7005 Retro Fit Digital Chip Universal Conversion 1/32 Slot Car Cup Racer Parts The Kyosho IFW431B is aScalextric 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.