Motorcycle spark plugs won't increase the power of your motorbike, but an efficient spark is essential to the overall economy and performance. Platinum motorcycle spark plugs give improved acceleration, easier starting, provide a stronger spark and improved combustion efficiency over standard motorcycle spark plugs. Iridium spark plugs, which are 6x harder and 8x stronger than platinum, make it extremely tough and wear-resistant and can withstand even the most severe riding conditions.