I have been using these for years on multiple bikes. If you have trouble starting your bike in the winter or from cold you will notice a significant difference using Iridium over standard plus. You get a tiny bit more throttle response too. In return these plus need changing I have found every 8-9k miles rather than 12k on standard ones! For £8-£10 a plug the slight performance gains are well worth the shorter lifetime for me. Testing on gsxr k1 k2 k3 750, aprilia rs125, sr50, derbi gpr50, derbi senda 125, gsxr 600 srad, 4 Yamaha R6 5SLs
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Quality branded plugs that last well especially when used hard 😊
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sparkplugs are something you can,t do without and iridiums are the plug to have.
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Awesome plugs just don't over titen them
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Very Good
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