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Boost your YFZ450R’s power today with the ultimate big bore top end kit
The stainless steel valves increase airflow for more top end power
Yamaha Raptor 700 stock bore top end gasket kit with MLS 102mm head gasket
Designed as a direct-fit stock bore replacement
Wossner Polaris Scrambler Sportsman Forest XP 1000 14-21 90.50mm 12:1 Piston Set Sport 400L Boost your YFZ450R’s power todayPiston Kit Polaris 1000 Scrambler 14 21 Sportsman 15 21 Forrest 2015 12. 0: 1 CR Wossner is Germany's finest aftermarket forged piston and rod manufacturer and have over 25 years of experience in the high performance racing industry. Top European racers and FIM World Champions rely on Wossner for only the best pistons, rods and customer service. Wossner Part# K8940DA 2, GNH90. 50, CW20, WP038 SP Features In house designed and manufactured; all
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