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Athena Big Bore Kit Compatible With 05-19 YAMAHA YZ125
The water jets have been widened for a higher flow rate, keeping the cylinder cool. Athena built a reliable cast piston that has been molybdenum-coated for high performance use and extended wear life. Includes a specially designed gasket kit to accommodat Athena offers a wide range of cylinder kits for scooters and motorcycles with diameters and portings completely re-designed as original spare parts and / or specific boost to be used on tracks. In particular, racing kits consist of lighter pistons with a flat head, special portings, exhaust bridge, and a new cylinder head designed to increase the compression ratio and improve internal combustion. For some models Athena also supplies special long stroke racing kits complete with

Price is $923.00
Price: $923.36