WISECO PISTN KT RE YZ250F 14-15 WRE812M07700R&D developed to provide dyno proven power gains, Asymmetric skirt design for improved wear and even loading on major thrust skirt, Precision fit ring; custom lapped compression ring for improved power, 100% billet machined for superior strength to weight ratio and optimized fit, High compression (14: 1 for 450cc, 14. 5: 1 for 250cc) for maximum torque and throttle response, Dome design improves flame travel to maximize air fuel burn efficiency, DLC
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