Of course, the folks at Wonder Bread probably would say the same about a competitive loaf that sold for several times more. SplitFire spark plugs cost roughly five times most conventional spark plugs.

In the pursuit of performance, we installed SplitFire Triple Platinum spark plugs in a mild small-block Chevy.

What do Peak antifreeze, SplitFire spark plugs and T-shirts have in common? They’re produced under contract and sold by Old World Industries Inc., a privately-held Northbrook company with ...

Of course, when you lift the hood, you'll see SplitFire spark plugs and wires firing the SVO 351. Come out and see the Performance V and all the other nationwide hot rods on a Power Tour stop near ...

Gant takes SplitFire Spark Plugs 200 DOVER, Del. — Another race, another win for Harry Gant, who took the lead yesterday on the 105th lap and finished with a five-second victory over Robert P… ...