BOLD MAGENTA part numbers are new for 2024 PARTSCANADA.COM 2024 | OFFROAD ENGINE 636 DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 4-6 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. RACER ELITE™ 2-STROKE SERIES PISTON FOR YAMAHA YZ125 22-24,YZ125X 23-24 •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. BORE SIZE PART # 54.0mm 0910-6459 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 WISECO FEATURES PRO-LITE PISTONS • Durability, longevity and increased horsepower •Innovative forging design and piston skirt provide maximum horsepower and torque PK PISTON AND GASKET KITS •Contains all the necessary components for overboring or rebuilding your top end • Features forged pistons, rings, wrist pins, circlips and top end gasket set 4-STROKE RACER’S CHOICE PISTONS •Now you can own the same race parts as all the top race teams •These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer •When blow-by starts to increase on other pistons and power starts to fade,Wiseco Race Series parts continue sealing and performing •Racer’s Choice pistons features include boxed forging, shot-peening, titanium nitride rings and ArmorGlide skirt coating NOTE: Service intervals may be increased with Racer’s Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only. 2-STROKE GP SERIES PISTONS •Have additional features over standard Pro-Lite parts • Each piston is E-coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation •GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression • Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end FORMULA FOR COMPUTING CUBIC CENTIMETER DISPLACEMENT D = Bore Size in Inches; S = Stroke in Inches; Number = Number of Cylinders D(2) x .7854 x S x N x 16.387 = CC Displacement REPLACEMENT RING SETS •Each ring set is for one piston •See Wiseco ring buyer’s guide for details NOTE: Wiseco rings fit only Wiseco pistons.
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