Dirt bike training wheels are compatible with the following models Compatible with honda CRF50 XR50 Z50 Compatible with razor MX500 MX125 MX400 MX500 Compatible with yamaha PW50 TTR50 PW80 Compatible with suzuki JR50 DR-Z50 Compatible with x-pro 50cc dirt bike Compatible with moto tec 50cc dirt bike We can fit all types of 50cc bikes. If you are not sure, please feel free to contact us. Tip: 1. The product needs to be assembled, you can assemble it according to the installation picture on the page, if you don't understand, you can always ask us. 2. After receiving the package, please pay attention to check whether the package is damaged and whether the product parts are complete. 3. The after-sales guarantee time for this product is 2 years, during this period, the product has any quality problems, we can provide you with a full refund. [10 Years After-Sales Guarantee] Dirt bike training wheels come with a 10-year after-sales service guarantee, during this period, if you receive the product does not fit or have other problems, even after the Amazon return date, you can also send us an email through the order, we will replace your new off-road vehicle training wheels within 24 hours. [Wide Compatibility] Dirt bike training wheels compatible with razor MX500 MX125 MX400 MX500 honda CRF50 XR50 CRF50F Z50 Z50R yamaha PW50 TTR50 PW80 and other series of 50CC motorcycles, please check before buying Please check the model number before you buy. [Make Sure the Child Does Not Fall] Reduce the risk of your child falling when learning to ride with our dirt bike training wheels. Adjust the height of the tire based on your child's level and the terrain to enhance their riding confidence and improve their learning speed. Dirt bike training wheels is also the best holiday gift for your child. [10 Minutes to Install] With our full installation instructions included in the package, you can easily install our dirt bike training wheels within 10 minutes. You can also find helpful installation videos on YouTube. [100% Quality Assurance] Our dirt bike training wheels are constructed with top-quality materials, including upgraded wear-resistant tires and a stainless steel axle that will not rust. This ensures long-lasting use for your child's training and beyond.