If you're tired of stock rubber radiator hoses cracking or getting soft, upgrade to this silicone kit. It's a complete set of upper and lower hoses (plus clamps) made specifically for the 2002-2005 Yamaha YZ250F and 2002-2006 WR250F. These aren't your average hoses – they're 4.5mm thick, 3-ply reinforced silicone. That means they're way more durable, resist oil and coolant breakdown, and won't collapse under high RPMs. They handle crazy temps from -65°F up to 500°F, with a working pressure of 85 PSI. Basically, they're built for hard riding. They're a direct OEM replacement, so no modifications needed – just take off the old ones and put these on. The silicone also gives better heat dissipation. A great upgrade for motocross or trail riders who want more reliability and performance from their cooling system. Comes with all the hoses and clamps you need for the job.