Denso Spark Plug Set To Suit 420HP+ XR5 / MK2 RS

Spark plugs to suit BIG power Focus XR5 (ST225) / MK2 RS.

Premium Denso Iridium Power. Through patented technology, including a 0.4mm diameter centre electrode - the Iridium Power plug produces the hottest, most concentrated spark with the lowest voltage and outperforms any plug today.

2 steps colder than stock XR5 spark plugs, 1 step colder than MK2 RS spark plugs - these are perfect for a 450-650hp vehicle

As featured on:

@xrv_guy 695hp AWD XR5

JD Racing 550whp AWD XR5

Tried and tested

Note:

Pre gapped to 0.8mm out of the box

Tightening sequence - same as stock spark plugs - follow Ford recommendations.