SPI WB000464 Defender Hardweld Ski-Doo Snowmobile Ski Runners - Black

The SPI WB000464 Defender Hardweld Runners are premium snowmobile ski wear bars engineered for Ski-Doo sleds, delivering exceptional durability and precision steering control in demanding trail conditions. Built with a robust 7/16 in. carbon steel host bar featuring a flat top profile, these runners resist bar roll during aggressive cornering to maintain consistent handling.

Superior Carbide Construction:

• Carbide inserts are manufactured from YG13 tungsten carbide, delivering ultimate tensile strength for extreme hardness and chip resistance
• Diamond-shaped carbide segments are set deeper into the host bar pocket at a 90-degree angle, creating larger cross sections and greater surface contact adhesion than competing designs
• 1 in. carbide segments allow the ski to flex naturally without compromising carbide bonding integrity
• Deep-set carbide pocket design provides superior resistance to side-impact failure from rocks and gravel

Defender Series Features:

• Hardweld finish applied directly to the contact area of the host bar for added depth and extended service life
• Chamfered ends reduce catching when reversing or unloading the sled
• Extended studs accommodate optional ski skins
• Gentler on concrete and asphalt surfaces compared to standard carbide runners
• All carbides and wear bars finished in a black rust-preventative coating
• All necessary nyloc fastening nuts included for a complete installation
• Engineered and test-fitted for precise ski fitment and straightforward installation

The SPI Defender Hardweld Runners offer a measurable performance and durability advantage over shallow-mount competitor designs, making them a reliable upgrade for Ski-Doo snowmobile owners who demand long-lasting, high-traction ski wear bar performance.