Was at the dealership last Sat. ordering parts for upcoming maintenance, spark plugs, air filter, tires. Counter person could not find spark plug ( LMAR8BI-9) in any NGK manual. Yesterday he called NGK directly and they told him that Suzuki contracted with NGK to manufacture that particular spark plug for the V-Strom. The spark plug is specific to the V-Strom, no other cross reference part numbers work. Cost = $40 per plug. I will be running my plugs well past the recommended replacement intervals at those prices.