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The twisted runner geometry optimizes cylinder-to-cylinder flow balance producing gains of 15-25 hp and 12-18 lb-ft of torque at the wheels
The hook opening accommodates 7/8-inch and 1-inch D-shackles and features a load rating of 10
Primary tube diameters range from 1
and all mounting hardware
Kits include CNC-machined flanges
Sierra Marine Yokes 18-2125 Fuel Rims The twisted runner geometry optimizesThe Sierra Marine Yoke 18 2125 is a precision machined replacement yoke engineered for marine sterndrive applications where saltwater corrosion and high RPM stress demand premium materials. Designed to fit Mercury MerCruiser Alpha One and Gen II outdrives, this yoke handles the brutal transition from prop load to wide open throttle in performance boats and ski rigs. Machined from heat treated 4140 chromoly steel, the 18 2125 features a splined
