BOLD MAGENTA part numbers are new for 2023 PARTS-UNLIMITED.COM 2023 | OFFROAD 2023 NEW PRODUCTS NP145 RACER ELITE™ 2-STROKE SERIES PISTON FOR YAMAHA YZ125 22 • The most advanced forged 2-stroke piston available provides premium performance and durability • 2000 Series alloy provides extreme strength for extreme conditions • ArmorPlating™ for protection from harmful detonation and improved ring seal • ArmorFit™ skirt coating for perfect fit and conformability to your cylinder bore • Dedicated forging for greater strength and light weight • Premium-quality rings enhance sealing for each application • Superfinish piston pin reduces friction and smooths operation • Based on more than 75 years as the industry performance leader • Made in the U.S.A. • See page 1138 of the 2023 Parts Unlimited Offroad catalog for the entire line of Wiseco Racer Elite 2-Stroke pistons BORE SIZE PART # SUG. RETAIL 54.0mm 0910-6459 $187.07 FITS MODEL BORE SIZE (MM) OVER SIZES (MM) PISTON PART # SUG. RETAIL GAS GAS 4-STROKE EX450F 21-23, MC450F 21-23 97 STD 0910-6542 $237.43 12.75:1 compression HUSQVARNA 4-STROKE FC450 14-22, FS450 15-23, FX450 17-22 97 STD 0910-6542 237.43 12.75:1 compression KTM 4-STROKE 450 SX-F 13-22 97 STD 0910-6542 237.43 12.75:1 compression YAMAHA 2-STROKE YZ125 22 54 STD 0910-6456 123.13 Pro-Lite 56 2.0 0910-6457 162.67 YZ125 22 54 STD 0910-6458 162.67 Racer's Choice GP Style HIGH-PERFORMANCE PISTONS • Forged from high-silicon aluminum alloy for maximum strength and dependability • Wiseco offers a complete range of popular piston models and years for both trail and racing applications • See pages 1139-1169 of the 2023 Parts Unlimited Offroad catalog for the entire line of Wiseco High-Performance pistons PRO-LITE PISTONS • Drop-in, forged replacement optimizes greater strength-to-weight ratio over OEM part • Additional forced pin oiling improves small end bearing and wrist pin lubrication • ArmorGlide skirt coating reduces skirt and cylinder wear and improves performance through reduced operating friction • Offered in +2mm overbore option for higher displacement builds GP SERIES PISTONS • Forged material offers increased tensile strength over OEM cast components and lightening operations result in approximately 7 gram weight savings over OEM • ArmorX coating in critical areas provides highly protective thermal barrier, reducing heat-induced damage and wear, and preventing ring microwelding • Shares the same ArmorGlide skirt coating and pin oiling benefits as ProLite 0910-6542
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