About quality and texture - The CPR8EA-9 spark plug from NGK is a standard resister plug with a heat rating of 8, made using high quality processes and materials.About the feeling of use - After installing a big bore kit and using the generic internet recommended CR9E spark plug, I begain to have idling issues and difficultly restarting the engine when warm. After identifying the manufacture of the big bore kits recommendation of the CPR8EA-9 spark plug, these issues have now been resolved.Products to buy together - With the spark plug being a regular service item, key products to purchase when carrying out maintenance on my motorcycle would be crush washers, gaskets and the like as these products are cheap and convenient to have on hand.Difficulty of installation - The installation of the CPR8EA-9 spark plug is an simple task that took 0.2 of an hour to complete. Some mechanical aptitude and the use of basic hand tools is all that is required to firstly check the gap between the center electrode and the ground electrode and then install the spark plug onto the cylinder head.Cost performance and comparison with other products - I find the cost of all the products NGK sell to great value when compared to what most other companies sell their products for and the CPR8EA-9 spark plug is no different.About shipping and packaging - With there being no cost difference between sea freight and EMS for the CPR8EA-9 spark plug, I chose EMS for an earlier arrive date. The part was extremely well protected while being covered in bubble wrap and surrounded with air pillows in a sturdy cardboard box.Any concerns, cautions, or advice when purchasing - Webike Japan is the first place I look to for all my motorcycle needs. From service parts to performance products and even motorcycle gear and apparel, Webike always seem to satisfy my needs in regards to availability and pricing.View Detail

Cheapest price I could find anywhere on the internet. Defenately Cheaper than in my country. I installed them in my Honda cb500f 2020 and I rode about 3000 km a;ready and feels good. I will check them after 12000 km when I will replace them, hope all is well. View Detail

About quality and texture, I can confirm that the quality is great and that the materials used are a combinations of copper, porcelain and nickel alloy for the standard plugs from NGK. About the feeling of use, After 5000 kms of use with the previous spark plug the throttle response was lacking but after the installation of the new spark plug all my performance was restored. Products to buy together, To maximize the performance of your spark it would be ideal also add an upgraded hyper ignition coil from Takegawa to your cart. Difficulty of installation, I can say the fitment of the spark plug for my installation was very easy due to the ease of access to the cylinder head and simple nature of the task. Cost performance and comparison with other products, The pricing of the product is great. You receive a spark plug made of quality materials from well known brand. Pricing of stand spark plugs from other brands is similar where iridium spark plugs are much more expensive. About shipping and packaging, My order was shipped within 48 hours of me placing the order and I received a few emails advising me of the status up until the order was dispatched. I find the link supplied to track my order very useful and the order arrived within the estimated date range. Any concerns, cautions, or advice when purchasing, I have no concerns or cautions when purchasing from Webike. I cannot recommend Webike enough for the majority of your biking needs. They not only sell aftermarket parts and bike gear but also OEM parts for your repairs and servicing needs. View Detail

About quality and texture: I am happy with the quality of the CPR8EA-9 standard spark plug from NGK, the properties of the standard NGK spark plug like copper cored center electrode ensure a reliable spark.About the feeling of use: The NGK CPR8EA-9 spark plug is better suited to the Monkey 143cc BBK then the previously installed NGK CR9E, the warmer rating ensures a trouble free spark in the cooler months when riding at lower RPMs.Products to buy together: NGK also offer high performance spark plug caps which would also be desirable to purchase alongside the NGK CPR8EA-9 standard spark plug to remove any chance of the performance of the standard spark plug being decreased. Difficulty of installation: The process to install takes about 5 minutes. Firstly, check the spark plug gap and adjust if required, then simply remove and install the spark plug and refit the spark plug cap securely. Not difficult to do. Cost performance and comparison with other products: Good costing as you are getting a quality standard spark plug at a great price that is more then suitable for the perforamce requirement of the Monkey 143cc BBK when considering the additional cost and minimal performace advantage of the iridium spark plug.About shipping and packaging: Sea freight was my preferred method of shipping due to the lower cost but currently this service is unavailable from Japan Post, EMS is much faster which is nice. Webike kept me updated on the status of my order up to when it shipped. The parcel arrived within the expected date range and was well packaged with no chance of the part being damaged. Any concerns, cautions, or advice when purchasing: The original Honda spark plug heat rating is 6. Recommended heat rating for the stock engine is 6 or 7 and recommended heat rating for a big bore or high compression engines is 8 or 9.View Detail

I've replaced them with Iridium plugs in the past, but I felt like they didn't fit The OEMPlug is replaced regularly
MAJESTYs are high-revving engines, so it's best to replace them as soon as possible to keep them in good shape I thinkView Detail