@ £10 a plug those Splitfires must be the dog's danglies
Suppose the amount of plugs you might change over 100k if it makes it works out the same
£10 a plug no no sir.. thats just for Splitfire normal plugs...
The TP's retail @£40+ per plug
BUT I pay around £18 per pair from the States....
Not only the cost, but also the risk of stripping threads, crossthreading etc is only once in a lifetime..
Did actually take a pair out an RT1100 oily after 40k miles and the plug gap and condition was as new..
I'll see if I can find the actual part number for oilhead engine trip platinum plugs
as I've forgotten
Never forget airhead numbers tho'
Copied from another site>>
OTHER TECHNOLOGY
But while iridium is the latest technical revolution to hit spark plugs, one high-performance plug has been around for a good few years – Splitfire. This US-made plug made its mark with American car applications, but lately has been adopted by many Japanese tuners.
‘It really was the first performance plug on the scene, and was available in Split-V and Triple Platinum forms. Splitfire plugs aim to improve the burn through the size and efficiency of the spark, which is why there’s a V-shaped notch in the top of the electrode,’ says Martyn Pearson of UK Splitfire distributor, Triple P. ‘That allows the flame kernel to pass unimpeded into the cylinder in order to reduce misfires, and that in turn offers better power and fuel consumption,’ Pearson argues.
Meanwhile the Triple Platinum does away with the Split-V, and uses three platinum electrodes, which naturally offer a much-improved spark. ‘These have all the advantages of the Split V, but have increased longevity – they come with a 100,000-mile warranty, and have always proved popular with hot-hatchback owners.
EDIT
Just been told by my supplier that the Triple Platinums are not being made anymore
Apparently the price of Platinum has soared over last 2 years and they're now to expensive to make
There is limited existing stock available,
I have 3 new pairs
Use this page to find out the correct splitfire plug for your engine..
then prefix TP instead of SF and do a search, DemonTweaks in UK had a good supply of TP popular sizes..
http://www.gadgetjq.com/spark_plug_cross_reference_motorcycle.htm
shame they dont seem to have any more in stock 
