Mishimoto MMDB-YZ450F-00RX Yamaha YZ450F/YZ426F/WR426F Braced Aluminum Dirt Bike Radiator, 2000-2005, Silver TIG-welded aluminum construction High-quality brazed aluminum core Direct OEM fit to ensure smooth installation 30% greater cooling efficiency Mishimoto Lifetime Warranty Limited lifetime warranty 30 per cent greater cooling efficiency Built-in corner bracing ensures the highest level of durability to riders on the track or off road Made with aircraft quality brazed aluminum and are precision tig welded for extreme durability Direct OEM fit to ensure smooth installation