Spark Plugs Information

Often overlooked especially on modern motorcycles where access is awkward, the spark plug is a crucial part of a correctly performing engine. All plugs will deteriorate over time with a resultant performance loss and many engine ailments such as rough running, starting problems and increased fuel consumption can be attributed to worn or damaged spark plugs.

Whether you use your bike for Sunday runs, commuting to work or getting dirty off-road a fresh set of plugs or an upgrade to performance plugs can often give your engine a welcome boost.

If long life is wanted then Platinum and now Iridium plugs are available where parts of the plugs use harder metals with higher melting points to minimize wear.

Various manufacturers produce spark plugs but here at Bell Rock Racing Splitfire and Denso brands have been unrivaled successes. Splitfire plugs use their patented “V” side electrode and are made in the USA. Denso produce the majority of their plugs with U-groove technology and are made in Japan. Both are premium products with a successful track record.

Notes: Always check spark plug gaps against manufacturers specifications for your model before installation. Iridium plugs need special care so as not to damage the very fine central electrode.

For installation a fitment advice sheet is provided with all sales.