SPI A0404640 Ripper Carbide Ski Runners for Yamaha Snowmobiles - Four75

The SPI Ripper Four75 Carbide Ski Runners are precision-engineered snowmobile ski carbides designed as a direct-fit replacement for Yamaha snowmobiles. Built on a 7/16 in. carbon steel host bar with a flat-top profile, these runners are purpose-built to eliminate bar roll during aggressive cornering, delivering confident handling on hardpack and icy trails.

Key Features:

• YG13 Tungsten Carbide Construction — Delivers exceptional tensile strength, superior hardness, and extended wear life while minimizing chipping
• 90-Degree Carbide Pocket Angle — Creates a significantly larger cross-section than competing designs, maximizing surface contact and carbide adhesion
• 1 in. Carbide Segments — Segmented design allows natural ski flex without compromising the integrity of the carbide bond
• Flat-Top Host Bar — Prevents bar roll during hard cornering for improved stability and steering precision
• Chamfered Ends — Reduce catching when backing up or unloading from a trailer
• Extended Studs — Compatible with ski skins for added versatility
• Ripper Four75 Runner Style — Features 4 in. of 75-degree tungsten carbide; less aggressive profile with a longer wear period, ideal for lightly studded tracks or studless setups
• Hard-Welded Front and Rear — Additional weld points at both ends of the carbide for extended durability and secure retention
• Diamond-Set Carbide Design — Carbides are set deeper into the host bar compared to shallow-mount competitor designs, providing more surface contact adhesion and greater resistance to side-impact failure from rocks or gravel
• Black Rust-Preventative Finish — All carbides and wear bars are finished in a protective black coating
• Hardware Included — All necessary nyloc fastening nuts are included for a complete installation
• Precision Fit — Engineered and test-fitted for your specific Yamaha ski for straightforward, hassle-free installation

Sold as a pair, these Ripper Four75 runners are an excellent choice for trail riders looking for a durable, long-lasting carbide runner with a moderate bite angle. Recommended for use with lightly studded tracks or no studs.