Yamaha Extension Harness Type 7b CRF450L This is essential for drivers

This is essential for drivers using E85 fuel or cranking out massive amounts of horsepower who need more adjustment

Whether you’re climbing rocks having fun in the mud or competing in the desert sand the Stage 2 kit will optimize your ride and give your Can-Am X3 RR enhanced durability

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Next generation cog design with DUMAX™ compound for above-cord strength

Yamaha Extension Harness Type 7b CRF450L This is essential for driversThe Yamaha Extension Harness Type 7b is the 4 wire extension harness that is permanently installed on the bike and connects the Yamaha Harness Type 7 main harness to the ECU. You can purchase additional Extension Harnesses to tune additional bikes.