January 2013 Fastrack

[Andy Bettencourt]

Curious Greg, why did the 13B get classed with the exact weight of the ITS RX7 (2680) in an ST class? It can also compete in ITS trim at that weight so why bother?

Because you can now put the 13B into any Mazda chassis. In a RWD application it would be the same 2680 as the ITS-spec RX-7 already allowed. More options, albeit still on the 'safe' side for weight.

So they lowered the weight by 26lbs to adjust for the extra RWD % that got added so the numbers would match up with the 2680.

Mazda with a 1.8L 180whp piston engine - 2515lbs
Mazda with a 13B 180whp engine - 2680lbs