Upgrade your ride by swapping the harsh solid front tire on your Razor Crazy Cart XL or DLX for a high-performance pneumatic (inflatable) tire. This simple modification significantly improves handling, ride quality and bouncing of the cart. The air-filled design also offers better grip and is less prone to the flat-spotting wear common with solid rubber. Check out the video for a step-by-step DIY installation guide of tire and new chain guards.
Linked below is all the products used in the this video:

200×50 Kenda Tire: https://taxi-garage.com/products/kenda-air-tire-200×50
Chain Guards: https://taxi-garage.com/collections/crazy-cart-xl-parts/products/crazy-cart-xl-chain-guard-plate
Muc-Off Chain Lube: https://amzn.to/4sCI3I4